GERM Reservoir Database
Development and Maintenance by the EarthRef.org Database Team

GERM Database Search Results        
Reservoir Z Element Value Median SD Low High N Unit Info Reference Source(s)
Zeolite Clay   87Sr/86Sr 0.71676         3   This unit contains a mixture of 50% zeolite clay, 20% Mn-bearing clay and 30% normal clay based on barrel sheet descriptions. The three analyses are weighted accordingly. Plank & Langmuir 1998
Zeolite Clay 38 Sr 100         3 ppm This unit contains a mixture of 50% zeolite clay, 20% Mn-bearing clay and 30% normal clay based on barrel sheet descriptions. The three analyses are weighted accordingly. Plank & Langmuir 1998
Zambezi River   87Sr/86Sr 0.716             Estimated 87Sr/86Sr ratios normalized to a value of 0.7080. Precision is of no importance in measurements here due to the seasonal variation which causes concentration values to fluxuate. Palmer & Edmond 1989
Zambezi River 38 Sr 1.2             Estimated Sr concentrations derived from fluvial Ca data due to the precipitation of Sr with calcium carbonates in the sea. Sr concentrations were determined using standard mass spectrometric techniques. Palmer & Edmond 1989
Yukon River   87Sr/86Sr 0.7137             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989
Yukon River 38 Sr 1.589             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989
Yellow River   87Sr/86Sr 0.7111             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989
Yellow River 38 Sr 7.458             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989
Yangtze River   87Sr/86Sr 0.7109             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989
Yangtze River 38 Sr 2.053             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989
Yangtze Craton 38 Sr 206           ppm Compostional estimate of the Yangtze craton. Gao et al. 1998
Yangtze Craton 38 Sr 254           ppm Compostional estimate of the Yangtze craton. Average compostion of granulite terrains and calculated on a sedimentary carbonate rock-free basis. Gao et al. 1998
Yangtze Craton 38 Sr 304           ppm Compostional estimate of the Yangtze craton. Average composition of granulite terrains. Gao et al. 1998
Yangtze Craton 38 Sr 263           ppm Compostional estimate of the Yangtze craton. Calculated on a sedimentary carbonate rock-free basis. Gao et al. 1998
Yangtze Craton 38 Sr 273           ppm Compostional estimate of the Yangtze craton. Includes sedimentary carbonates. Gao et al. 1998
Y-74450 Eucrites 38 Sr 85           µg/g Trace element compositional data on Y-74450 eucrite. Mittlefehldt 2004 Wanke et al. 1977
Xingu River   87Sr/86Sr 0.7292             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989
Xingu River 38 Sr 0.156             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989
Winisk River   87Sr/86Sr 0.7177             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Winisk River 38 Sr 0.251             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Wesser River   87Sr/86Sr 0.7089             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989
Wesser River 38 Sr 8.229             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989
Volcanoclastic Turbidites   87Sr/86Sr 0.7045         43   Average of 43 combined analyses weighted by interval height. Plank & Langmuir 1998
Volcanoclastic Turbidites   87Sr/86Sr 0.7045         13   Average of 13 volcaniclastic turbidites corrected for pure silica using down-core logging for SiO2 contents, in a similar fashion as for the chert sections. Plank & Langmuir 1998
Volcanoclastic Turbidites   87Sr/86Sr 0.7045             Isotopic ratios of the Volcaniclastic Turbidites section of the DSDP Hole 801 sediment column. Isotopic ratios derived using data taken from several sources. Elliot et al. 1997
Volcanoclastic Turbidites 38 Sr 175         43 ppm Average of 43 combined analyses weighted by interval height. Plank & Langmuir 1998
Volcanoclastic Turbidites 38 Sr 249         13 ppm Average of 13 volcaniclastic turbidites corrected for pure silica using down-core logging for SiO2 contents, in a similar fashion as for the chert sections. Plank & Langmuir 1998
Volcanoclastic Turbidites 38 Sr 249           ppm Estimates of the composition of the Volcaniclastic Turbidite section of the sediment column from DSDP Hole 801. Elliot et al. 1997
Volcanoclastic Sediment 38 Sr 253         15 ppm Average of 15 volcaniclastic sediments using DCP analyses as weighted by the height of each drilled interval. Plank & Langmuir 1998
Vistula River   87Sr/86Sr 0.7094             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989
Vistula River 38 Sr 4.942             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989
Victoria Nile River   87Sr/86Sr 0.7114             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989
Victoria Nile River 38 Sr 1.102             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989
Vanuatu Trench   87Sr/86Sr 0.7053             Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 1 or highest. Plank & Langmuir 1998
Vanuatu Trench 38 Sr 359           ppm Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 1 or highest. Plank & Langmuir 1998
Upper Continental Crust   87Sr/86Sr 0.704636             Average isotopic composition of the Upper Crust as derived from composites taken from ODP sites 417/418. Values are taken from varying sources on the same composites in order to compare and contrast with 735B gabbroic isotopic composition which should closeley resemble 417/418. Hart et al. 1999 Staudigel et al. 1995
Smith et al. 1995
Hart & Staudigel 1989
Staudigel et al. 1989
Upper Continental Crust   Ba/Sr 2.2             Map model. Concentrations are directly calculated from rock proportions scaled from geologic maps and stratigraphic successions as summarized in Table 2. The UCC is calculated from data in Tables 4-6 with a weight ratio for Archean:Proterozoic:Phanerozoic = 50:30:20 that can be further divided into 10% Early and 90% Late Archean; 50% Early and 25% Middle and 25% Late Proterozoic; and 50% Paleozoic and 50% Mesozoic-Cenozoic. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Upper Continental Crust   Ba/Sr 2.3             Restoration model. Concentrations are calculated after restoration of the amount of crust lost be erosion, in particular, important when estimating the composition of juvenile continental crust. The restoration is performed based on geologic maps and stratigraphic successions as summarized in Table 2. In this model 5 and 10 km extra crust is added to the present-day upper-crustal layer for Phanerozoic and Precambrian areas, respectively. The UCC is calculated from data in Tables 4-6 with a weight ratio for Archean:Proterozoic:Phanerozoic = 50:30:20 that can be further divided into 10% Early and 90% Late Archean; 50% Early and 25% Middle and 25% Late Proterozoic; and 50% Paleozoic and 50% Mesozoic-Cenozoic. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Upper Continental Crust   Eu/Sr 0.0031             Major and minor element composition of the Upper Crust of the Earth with selected trace element ratios as given by Rudnick and Gao 2004. Kemp & Hawkesworth 2004 Rudnick & Gao 2004
Upper Continental Crust   Rb/Sr 0.314             Upper crust composition based on Taylor and McLennan 1981. Weaver & Tarney 1984 Taylor & McLennan 1981
Upper Continental Crust   Rb/Sr 0.32             Rudnick & Fountain 1995
Upper Continental Crust   Rb/Sr 0.32             Restoration model. Concentrations are calculated after restoration of the amount of crust lost be erosion, in particular, important when estimating the composition of juvenile continental crust. The restoration is performed based on geologic maps and stratigraphic successions as summarized in Table 2. In this model 5 and 10 km extra crust is added to the present-day upper-crustal layer for Phanerozoic and Precambrian areas, respectively. The UCC is calculated from data in Tables 4-6 with a weight ratio for Archean:Proterozoic:Phanerozoic = 50:30:20 that can be further divided into 10% Early and 90% Late Archean; 50% Early and 25% Middle and 25% Late Proterozoic; and 50% Paleozoic and 50% Mesozoic-Cenozoic. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Upper Continental Crust   Rb/Sr 0.25             Major and minor element composition of the Upper Crust of the Earth with selected trace element ratios as given by Rudnick and Gao 2004. Kemp & Hawkesworth 2004 Rudnick & Gao 2004
Upper Continental Crust   Rb/Sr 0.29             Map model. Concentrations are directly calculated from rock proportions scaled from geologic maps and stratigraphic successions as summarized in Table 2. The UCC is calculated from data in Tables 4-6 with a weight ratio for Archean:Proterozoic:Phanerozoic = 50:30:20 that can be further divided into 10% Early and 90% Late Archean; 50% Early and 25% Middle and 25% Late Proterozoic; and 50% Paleozoic and 50% Mesozoic-Cenozoic. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Upper Continental Crust 38 Sr 117.5           ppm Average composition of the Upper Crust as derived from composites taken from ODP sites 417/418. Values are taken from varying sources on the same composites in order to compare and contrast with 735B gabbroic composition which should closeley resemble each other. Hart et al. 1999 Staudigel et al. 1995
Smith et al. 1995
Hart & Staudigel 1989
Staudigel et al. 1989
Upper Continental Crust 38 Sr 350           ppm Upper crust composition based on Taylor and McLennan 1981. Weaver & Tarney 1984 Taylor & McLennan 1981
Upper Continental Crust 38 Sr 350           ppm Major and minor element composition of present day Upper Continental Crust as given by Taylor and McLennan 1981. Shaw et al. 1986 Taylor & McLennan 1981
Upper Continental Crust 38 Sr 350           ppm Upper crust trace element data from Taylor and McLennan 1981. Data used primarily for comparison to Loess data obtained in this study (Taylor et al. 1983) which has some element abundances similar to Upper Crustal values. Taylor et al. 1983 Taylor & McLennan 1981
Upper Continental Crust 38 Sr 269           ppm Restoration model. Concentrations are calculated after restoration of the amount of crust lost be erosion, in particular, important when estimating the composition of juvenile continental crust. The restoration is performed based on geologic maps and stratigraphic successions as summarized in Table 2. In this model 5 and 10 km extra crust is added to the present-day upper-crustal layer for Phanerozoic and Precambrian areas, respectively. The UCC is calculated from data in Tables 4-6 with a weight ratio for Archean:Proterozoic:Phanerozoic = 50:30:20 that can be further divided into 10% Early and 90% Late Archean; 50% Early and 25% Middle and 25% Late Proterozoic; and 50% Paleozoic and 50% Mesozoic-Cenozoic. Condie 1993
Upper Continental Crust 38 Sr 289           ppm Map model. Concentrations are directly calculated from rock proportions scaled from geologic maps and stratigraphic successions as summarized in Table 2. The UCC is calculated from data in Tables 4-6 with a weight ratio for Archean:Proterozoic:Phanerozoic = 50:30:20 that can be further divided into 10% Early and 90% Late Archean; 50% Early and 25% Middle and 25% Late Proterozoic; and 50% Paleozoic and 50% Mesozoic-Cenozoic. Condie 1993
Upper Continental Crust 38 Sr 320           µg/g Recommended composition of the Upper Continental Crust as given by various sources which are listed in Table 1 and 2 of Rudnick and Gao 2004 as well as in the text. Rudnick & Gao 2004
Upper Continental Crust 38 Sr 350           ppm Taylor & McLennan 1995
Upper Continental Crust 38 Sr 316           ppm UCC = Shaw et al. (1967;1976). Wedepohl 1995
Upper Continental Crust 38 Sr 316           µg/g Estimates of trace element compositions of the Upper Continental Crust. These values are taken from Shaw et al. 1967 & 1976 and represent averages from surface exposures. Rudnick & Gao 2004 Shaw et al. 1967
Shaw et al. 1976
Upper Continental Crust 38 Sr 289           µg/g Estimates of trace element composition of the Upper Continental Crust. These values are taken from Condie 1993 and represent averages from surface exposures. Rudnick & Gao 2004 Condie 1993
Upper Continental Crust 38 Sr 380           µg/g Estimates of trace element composition of the Upper Continental Crust. These values are taken from Eade and Fahrig 1973 and represent averages from surface exposures. Rudnick & Gao 2004 Eade and Fahrig 1973
Upper Continental Crust 38 Sr 320           ppm Major and minor element composition of the Upper Crust of the Earth with selected trace element ratios as given by Rudnick and Gao 2004. Kemp & Hawkesworth 2004 Rudnick & Gao 2004
Upper Continental Crust 38 Sr 266           µg/g Estimates of trace element compositions of the Upper Continental Crust. These values are taken from Gao et al. 1998 and represent averages from surface exposures. Rudnick & Gao 2004 Gao et al. 1998
Upper Continental Crust 38 Sr 350           µg/g Estimates of trace element compositions of the Upper Continental Crust. These values are taken from Taylor and McLennan 1985 & 1995 and represent estimates derived from sedimentary and loess data. Rudnick & Gao 2004 Taylor & McLennan 1985
Taylor & McLennan 1995
Upper Continental Crust 38 Sr 316           µg/g Estimates of trace element compositions of the Upper Continental Crust. These values are taken from Wedepohl 1995 and represent a previous estimate. Rudnick & Gao 2004 Wedepohl 1995
Upper Continental Crust 38 Sr 320   46       µg/g Recommended composition of the Upper Continental Crust as given by various sources which are listed in Table 1 and 2 of Rudnick and Gao 2004 as well as in the text. Rudnick & Gao 2004 see text








Upper Continental Crust   Sr/Nd 11.85             Major and minor element composition of the Upper Crust of the Earth with selected trace element ratios as given by Rudnick and Gao 2004. Kemp & Hawkesworth 2004 Rudnick & Gao 2004
Upper Continental Crust   Sr/Nd 13             Rudnick & Fountain 1995
Upper Continental Crust   Sr/Sr* 1.01             Elemental ratios of the Upper Crust as derived from composites taken from ODP sites 417/418. Values are taken from varying sources on the same composites in order to compare and contrast with 735B gabbroic composition which should closeley resemble each other. Hart et al. 1999 Staudigel et al. 1995
Smith et al. 1995
Hart & Staudigel 1989
Staudigel et al. 1989
Ultrabasic Precambrian Granulites 38 Sr 212         14 ppm Shaw et al. 1986
Turbidites   87Sr/86Sr 0.70549         4   Similar lithologies as for Site 183 but with a greater thickness of the turbidites. Combined 300 m of Site 183 sediments with 480 m of turbidites in Site 178 and two shallow piston cores. Plank & Langmuir 1998
Turbidites   87Sr/86Sr 0.73493         4   Average of 4 Quaternary turbidites from the Ganges cone after McLennan et al. (1990) assuming that equal proportions of fine (clay-silt) and coarse (silt-sand) units. Plank & Langmuir 1998
Turbidites 38 Sr 256         4 ppm Average of 4 Quaternary turbidites from the Ganges cone after McLennan et al. (1990) assuming that equal proportions of fine (clay-silt) and coarse (silt-sand) units. Plank & Langmuir 1998
Turbidites 38 Sr 324         4 ppm Similar lithologies as for Site 183 but with a greater thickness of the turbidites. Combined 300 m of Site 183 sediments with 480 m of turbidites in Site 178 and two shallow piston cores. Plank & Langmuir 1998
Transitional Mid-Ocean Ridge Basalts   87Sr/86Sr 0.70268             Compositie analyses on T-MORB glasses from the Mid-Atlantic Ridge as reported in the RidgePetDB database. Major and most trace elements for this T-type MORB are taken from the sample VEM0025-001-022. Klein 2004 Lehnert 2000
Transitional Mid-Ocean Ridge Basalts 38 Sr 129           ppm Compositie analyses on T-MORB glasses from the Mid-Atlantic Ridge as reported in the RidgePetDB database. Major and most trace elements for this T-type MORB are taken from the sample VEM0025-001-022. Klein 2004 Lehnert 2000
Tongan Basalts   87Sr/86Sr 140.70406         7   Average major and trace element values for Tongan Arc Basalts given in weight percent and parts per million respectively. Kelemen et al. 2004
Tongan Basalts 38 Sr 451.64         11 ppm Average major and trace element values for Tongan Arc Basalts given in weight percent and parts per million respectively. Kelemen et al. 2004
Tonga Trench   87Sr/86Sr 0.70952             Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 1 or highest. Plank & Langmuir 1998
Tonga Trench 38 Sr 233           ppm Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 1 or highest. Plank & Langmuir 1998
Tonalites-Trondhjemites-Granodiorites   Eu/Sr 0.002         355   Analysis of Archean Tonalite-Trondhjemite-Granodiorite (TTG) represented in major and minor element abundances as well as slected trace element ratios given by Martin 1995 but plotted in Figure 5 of Kemp & Hawkesworth 2004. Kemp & Hawkesworth 2004 Martin 1995
Tonalites-Trondhjemites-Granodiorites   Rb/Sr 0.12         355   Analysis of Archean Tonalite-Trondhjemite-Granodiorite (TTG) represented in major and minor element abundances as well as slected trace element ratios given by Martin 1995 but plotted in Figure 5 of Kemp & Hawkesworth 2004. Kemp & Hawkesworth 2004 Martin 1995
Tonalites-Trondhjemites-Granodiorites 38 Sr 623         641 ppm Average of 596 subsamples and 45 composites. Gao et al. 1998
Tonalites-Trondhjemites-Granodiorites 38 Sr 435           ppm Condie 1993
Tonalites-Trondhjemites-Granodiorites 38 Sr 515         553 ppm Average of 502 subsamples and 51 composites. Gao et al. 1998
Tonalites-Trondhjemites-Granodiorites 38 Sr 350           ppm Condie 1993
Tonalites-Trondhjemites-Granodiorites 38 Sr 445           ppm Condie 1993
Tonalites-Trondhjemites-Granodiorites 38 Sr 454         355 ppm Analysis of Archean Tonalite-Trondhjemite-Granodiorite (TTG) represented in major and minor element abundances as well as slected trace element ratios given by Martin 1995 but plotted in Figure 5 of Kemp & Hawkesworth 2004. Kemp & Hawkesworth 2004 Martin 1995
Tonalites-Trondhjemites-Granodiorites   Sr/Nd 21.21         355   Analysis of Archean Tonalite-Trondhjemite-Granodiorite (TTG) represented in major and minor element abundances as well as slected trace element ratios given by Martin 1995 but plotted in Figure 5 of Kemp & Hawkesworth 2004. Kemp & Hawkesworth 2004 Martin 1995
Tonalites 38 Sr 439           ppm Total average of group averages from USA, Canada, Sri Lanka, Greenland, Finland, UK and Portugal using an equal statistical weight. Wedepohl 1995
Tocantins River   87Sr/86Sr 0.717             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989
Tocantins River 38 Sr 0.253             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989
Tisza River   87Sr/86Sr 0.7096             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989
Tisza River 38 Sr 2.043             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989
Thelon River   87Sr/86Sr 0.7188             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Thelon River 38 Sr 0.16             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Tapajos River   87Sr/86Sr 0.7322             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989
Tapajos River 38 Sr 0.1             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989
Tanzania   87Sr/86Sr 0.7219             Estimated 87Sr/86Sr ratios normalized to a value of 0.7080. Precision is of no importance in measurements here due to the seasonal variation which causes concentration values to fluxuate. Palmer & Edmond 1989
Tanzania 38 Sr 0.492             Estimated Sr concentrations derived from fluvial Ca data due to the precipitation of Sr with calcium carbonates in the sea. Sr concentrations were determined using standard mass spectrometric techniques. Palmer & Edmond 1989
Tamar River   87Sr/86Sr 0.7098             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989
Tamar River 38 Sr 0.928             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989
Tamalyk Krasnoyarsk 38 Sr 300         38 ppm Siliceous and clayey phosphorites from the Altai-Sayan geosyncline Tamalyk Krasnoyarsk, Siberia. Detection Limit = 2 ppm. Altschuller 1980 Chaikina & Nikolskaya 1970
Talkeetna Arc Plutonic Rocks 38 Sr 225   9     6 ppm Geochemical data from the Talkeetna Arc Section of the Lower Crust. These particular values are representative of garnet granulites from the Tonsina section. All values for major element oxides are given in wt.% and for trace elements in ppm. Trace elements were gathered via XRF and ICP-MS analysis. Kelemen et al. 2004
Talkeetna Arc Plutonic Rocks 38 Sr 285   4     7 ppm Geochemical data from the Talkeetna Arc Section of the Lower Crust. These particular values are representative of garnet diorites and tonalites from the Klanelneechina section. All values for major element oxides are given in wt.% and for trace elements in ppm. Trace elements were gathered via XRF and ICP-MS analysis. Kelemen et al. 2004
Talkeetna Arc Plutonic Rocks 38 Sr 249   2     86 ppm Geochemical data from the Talkeetna Arc Section of the Lower Crust. These particular values are representative of Lavas, tuffs and volcaniclastic samples from the Talkeetna section. All values for major element oxides are given in wt.% and for trace elements in ppm. Trace elements were gathered via XRF and ICP-MS analysis. Kelemen et al. 2004
Talkeetna Arc Plutonic Rocks 38 Sr 248   4     42 ppm Geochemical data from the Talkeetna Arc Section of the Lower Crust. These particular values are representative of Lavas, tuffs and volcaniclastic samples from the Talkeetna section. All values for major element oxides are given in wt.% and for trace elements in ppm. Trace elements were gathered via XRF and ICP-MS analysis. Kelemen et al. 2004
Talkeetna Arc Plutonic Rocks 38 Sr 303   2     31 ppm Geochemical data from the Talkeetna Arc Section of the Lower Crust. These particular values are representative of gabbronorites from the Talkeetna section. All values for major element oxides are given in wt.% and for trace elements in ppm. Trace elements were gathered via XRF and ICP-MS analysis. Kelemen et al. 2004
Talkeetna Arc Plutonic Rocks 38 Sr 228   4     13 ppm Geochemical data from the Talkeetna Arc Section of the Lower Crust. These particular values are representative of Intermediate to felsic plutons from the Talkeetna section. All values for major element oxides are given in wt.% and for trace elements in ppm. Trace elements were gathered via XRF and ICP-MS analysis. Kelemen et al. 2004
Talkeetna Arc Plutonic Rocks 38 Sr 18.4   1.5     17 ppm Geochemical data from the Talkeetna Arc Section of the Lower Crust. These particular values are representative of pyroxenites from the Tonsina section. All values for major element oxides are given in wt.% and for trace elements in ppm. Trace elements were gathered via XRF and ICP-MS analysis. Kelemen et al. 2004
Talkeetna Arc Plutonic Rocks 38 Sr 277   4     7 ppm Geochemical data from the Talkeetna Arc Section of the Lower Crust. These particular values are representative of garnet diorites and tonalites from the Klanelneechina section. All values for major element oxides are given in wt.% and for trace elements in ppm. Trace elements were gathered via XRF and ICP-MS analysis. Kelemen et al. 2004
Talkeetna Arc Plutonic Rocks 38 Sr 229   10     6 ppm Geochemical data from the Talkeetna Arc Section of the Lower Crust. These particular values are representative of garnet granulites from the Tonsina section. All values for major element oxides are given in wt.% and for trace elements in ppm. Trace elements were gathered via XRF and ICP-MS analysis. Kelemen et al. 2004
Talkeetna Arc Plutonic Rocks 38 Sr 235   5     13 ppm Geochemical data from the Talkeetna Arc Section of the Lower Crust. These particular values are representative of Intermediate to felsic plutons from the Talkeetna section. All values for major element oxides are given in wt.% and for trace elements in ppm. Trace elements were gathered via XRF and ICP-MS analysis. Kelemen et al. 2004
Talkeetna Arc Plutonic Rocks 38 Sr 13   1.4     16 ppm Geochemical data from the Talkeetna Arc Section of the Lower Crust. These particular values are representative of pyroxenites from the Tonsina section. All values for major element oxides are given in wt.% and for trace elements in ppm. Trace elements were gathered via XRF and ICP-MS analysis. Kelemen et al. 2004
Talkeetna Arc Plutonic Rocks 38 Sr 300   2     31 ppm Geochemical data from the Talkeetna Arc Section of the Lower Crust. These particular values are representative of gabbronorites from the Talkeetna section. All values for major element oxides are given in wt.% and for trace elements in ppm. Trace elements were gathered via XRF and ICP-MS analysis. Kelemen et al. 2004
Susquehanna River   87Sr/86Sr 0.7142             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Fisher & Stueber 1976
Susquehanna River 38 Sr 1.225             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Fisher & Stueber 1976
Sumatra Trench   87Sr/86Sr 0.73493             Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 3 or moderate. Plank & Langmuir 1998
Sumatra Trench 38 Sr 251           ppm Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 3 or moderate. Plank & Langmuir 1998
Subducted Sediment   87Sr/86Sr 0.7173             Global subducting sediment (GLOSS) composition estimate based on DSDP and ODP drill cores for 70% of the worldwide trenches. The average is calculated as a mass-flux-weighted global mean taking into account convergence rates, trench lengths and sediment columns. Includes sediment columns from seafloor that is not currently subducting. Plank & Langmuir 1998
Subducted Sediment 38 Sr 327   53.8       ppm Global subducting sediment (GLOSS) composition estimate based on DSDP and ODP drill cores for 70% of the worldwide trenches. The average is calculated as a mass-flux-weighted global mean taking into account convergence rates, trench lengths and sediment columns. Includes sediment columns from seafloor that is not currently subducting. Plank & Langmuir 1998
Stikine River   87Sr/86Sr 0.7054             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Stikine River 38 Sr 0.662             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Stannern Eucrite 38 Sr 89           µg/g Trace element compositional data on Stannern Eucrite. Mittlefehldt 2004 Barrat et al. 2000
McCarthy et al. 1973
St. Maurice River   87Sr/86Sr 0.7112             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
St. Maurice River 38 Sr 0.126             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
St. Lawrence River Particulates 38 Sr 70           µg/g Elemental particulates in major North American rivers. Averages for major elements are weighted according to the suspended load prior to the construction of dams, for trace elements the average contents are mean values. Martin & Meybeck 1979
St. Lawrence River   87Sr/86Sr 0.7095             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
St. Lawrence River 38 Sr 1.564             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
St. John River   87Sr/86Sr 0.7098             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
St. John River 38 Sr 0.674             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Spinel Peridotites 38 Sr   20         ppm McDonough 1991 Maaloe & Aoki 1975
Jordan 1979
Boyd 1989
McDonough 1990
Spinel Peridotites 38 Sr 49 20 60     110 ppm McDonough 1990
Spinel Peridotites   Sr/Nd 15 14 7         This average Sr/Nd ratio only includes samples for which both Sr and Nd were determined. McDonough 1990
South Sandwich Trench   87Sr/86Sr 0.70919             Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 1 or highest. Plank & Langmuir 1998
South Sandwich Trench 38 Sr 115           ppm Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 1 or highest. Plank & Langmuir 1998
South Qinling Belt in China 38 Sr 218           ppm Compostional estimate of the Southern Qinling orogenic belt. Average compostion of granulite terrains and calculated on a sedimentary carbonate rock-free basis. Gao et al. 1998
South Qinling Belt in China 38 Sr 224           ppm Compostional estimate of the South Qinling orogenic belt. Includes sedimentary carbonates. Gao et al. 1998
South Qinling Belt in China 38 Sr 209           ppm Compostional estimate of the South Qinling orogenic belt. Gao et al. 1998
South Qinling Belt in China 38 Sr 204           ppm Compostional estimate of the South Qinling orogenic belt. Calculated on a sedimentary carbonate rock-free basis. Gao et al. 1998
South Margin of North China Craton 38 Sr 317           ppm Compostional estimate of the south margin of the North China craton. Calculated on a sedimentary carbonate rock-free basis. Gao et al. 1998
South Margin of North China Craton 38 Sr 342           ppm Compostional estimate of the south margin of the North China craton. Average composition of granulite terrains. Gao et al. 1998
South Margin of North China Craton 38 Sr 350           ppm Compostional estimate of the south margin of the North China craton. Average compostion of granulite terrains and calculated on a sedimentary carbonate rock-free basis. Gao et al. 1998
South Margin of North China Craton 38 Sr 375           ppm Compostional estimate of the south margin of the North China craton. Gao et al. 1998
South Margin of North China Craton 38 Sr 318           ppm Compostional estimate of the south margin of the North China craton. Includes sedimentary carbonates. Gao et al. 1998
South Antilles Trench   87Sr/86Sr 0.711             Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 3 or low. Plank & Langmuir 1998
South Antilles Trench 38 Sr 135           ppm Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 3 or low. Plank & Langmuir 1998
Solid Earth   87Rb/86Sr 0.024             Parent/daughter ratios of Depleted MORB mantle (DMM) from a number of different sources. Ratio values used as models for comparison to ratio values from Oceanic Gabbroic composites. Hart et al. 1999 Allegre et al. 1983
Solid Earth   87Rb/86Sr 0.0892             Parent/daughter ratios of Bulk Earth from a number of different sources. Ratio values used as models for comparison to ratio values from Oceanic Gabbroic composites. Hart et al. 1999 Allegre et al. 1983
Solid Earth 38 Sr 13           ppm Bulk elemental composition of the Solid Earth with concentrations given in ppm (and wt% where noted). McDonough 2004
Solid Earth 38 Sr 13           µg/g Compostioinal models for the bulk Earth, core and silicate Earth are modified after McDonough & Sun (1995). McDonough 1998
Solar System 38 Sr 22.9             Anders & Ebihara 1982 Cameron 1982
Solar System 38 Sr 23.5   1.904     18   Solar atomic abundances based on an average of C1 chondrites. Values are not normalised to 100% but they are relative to 10E6 Silica atoms. Anders & Grevesse 1989
Solar System 38 Sr 23.8   1.9754     15   Anders & Ebihara 1982
Solar Photosphere 38 Sr 2.97   0.07         Elemental solar photospheric abundances as given by various references. Palme & Jones 2004 Grevesse & Sauval 1998
Solar Photosphere 38 Sr 2.9   0.06         Abundances in Solar Photosphere; in original table: log N(H) = 12.00 Anders & Grevesse 1989
Slope Lisbourne Group 38 Sr 750         4 ppm Dark pelletal phosphorites, muddy and calcareous, associated with black chert, shale and limestone of the Slope Lisbourne group geosyncline, Alaska. P2O5 greater than 10%. Detection Limit = 2 ppm. Altschuller 1980 Patton & Matzko 1959
Skeena River   87Sr/86Sr 0.7046             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Skeena River 38 Sr 0.811             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Sioux County Eucrite 38 Sr 76           µg/g Trace element compositional data on Sioux County Eucrites. Mittlefehldt 2004 Barrat et al. 2000
McCarthy et al. 1973
Silty Mud 38 Sr 184         16 ppm The hemi-pelagic clay analyses where averaged over 10 m intervals and then averaged down-unit. Plank & Langmuir 1998
Silicified Limestone 38 Sr 685           ppm Mixed siliceous and carbonate lithologies including nannofossil and radiolarian oozes, chalk and chert. The average of the Hein et al. (1983) partly silicified chalk has been used after dilution with 50% total CaCO3. Plank & Langmuir 1998
Silicic Precambrian Granulites 38 Sr 318         23 ppm Shaw et al. 1986
Silicate Earth   87Sr/86Sr 0.7045             Present day Sr parent/daughter ratios from isotopic signatures in relation to ratios from abyssal peridotite depletion trends. Workman & Hart 2005
Silicate Earth   87Sr/86Sr 0.7045             Isotopic compositions of Depleted Mantle (DM) according to Strontium isotopes in the Bulk Silicate Earth.  The composition of the Bulk Silicate Earth (BSE) has been estimated by McDonough & Sun 1995.  Salters & Stracke 2004
Silicate Earth   Rb/Sr 0.0307             Present-day parent/daughter ratios, calculated with a continuous depletion model starting 3 Ga. Workman & Hart 2005
Silicate Earth 38 Sr 17.8           ppm Abundances of refractory lithophile elements along with K, Rb and Cs for models of the Bulk Silicate Earth. Data taken from various sources that agree Earth experienced some depletion of semi-volatile to volatile elements in relation to refractory lithophile elements during accretion. McDonough et al. 1992 Taylor & McLennan 1985
Silicate Earth 38 Sr 19.9   1.99       ppm Pyrolite model for the silicate Earth composition based on peridotites, komatiites and basalts. Error estimate is subjective. McDonough & Sun 1995
Silicate Earth 38 Sr 21.1           ppm Abundances of refractory lithophile elements along with K, Rb and Cs for models of the Bulk Silicate Earth. Data taken from various sources that agree Earth experienced some depletion of semi-volatile to volatile elements in relation to refractory lithophile elements during accretion. McDonough et al. 1992 Sun 1982
Sun & McDonough 1989
McDonough & Frey 1989
Silicate Earth 38 Sr 20           µg/g Compostioinal models for the bulk Earth, core and silicate Earth are modified after McDonough & Sun (1995). McDonough 1998
Silicate Earth 38 Sr 27.7           ppm Abundances of refractory lithophile elements along with K, Rb and Cs for models of the Bulk Silicate Earth. Data taken from various sources that agree Earth experienced some depletion of semi-volatile to volatile elements in relation to refractory lithophile elements during accretion. McDonough et al. 1992 Jagoutz et al. 1979
Wanke et al. 1984
Silicate Earth 38 Sr 18.21           ppm Abundances of refractory lithophile elements along with K, Rb and Cs for models of the Bulk Silicate Earth. Data taken from various sources that agree Earth experienced some depletion of semi-volatile to volatile elements in relation to refractory lithophile elements during accretion. McDonough et al. 1992 Hofmann 1988
Silicate Earth 38 Sr 20           ppm Composition of the Silicate Earth as given by elemental abundances in ppm (and wt%). McDonough 2004
Shergotty Meteorite 38 Sr 48   8       ppm Mars elemental abundances as given by Shergotty meteorite (basalitc shergottite) as given in Lodders 1988. Mars elemental abundances as given by Shergotty meteorite, which is a basalitc shergottite, as given in Lodders 1988. McSween, Jr. 2004 Lodders 1998
Shales 38 Sr 136           ppm Condie 1993
Shales 38 Sr 108           ppm Condie 1993
Shales 38 Sr 61           ppm Condie 1993
Severn River   87Sr/86Sr 0.7182             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Severn River 38 Sr 0.388             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Serra De Mage Eucrite 38 Sr 23           µg/g Trace element compositional data on Serra de Mage Eucrite. Mittlefehldt 2004 Barrat et al. 2000
McCarthy et al. 1973
Seine River   87Sr/86Sr 0.7081             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989
Seine River 38 Sr 4.574             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989
Seawater 38 87Sr/86Sr 0.70907   4e-05     42   Average 87Sr/86Sr value measured from Pelecypods, Gastropods, Worms, Barnacles, Echinoderms, Shark and Ray teeth and Carbonate sediments. Burke et al. 1992
Seawater   87Sr/86Sr 0.70916             Global isotopic strontium content in seawater which has been found in this study to not be in a steady state as was previously believed. Hydrothermal flux and riverine input have caused the concentration to vary greatly. Palmer & Edmond 1989
Seawater 38 Sr 90             Slight surface depletion. Sr[2+] is the probable main species in oxygenated seawater. Range and average concentrations normalized to 35¿ salinity. Bruland 1983
Seawater 38 Sr 87             Broeker & Peng 1982
Seawater 38 Sr 7.7           mg/kg This mean ocean concentratio has been calculated based on the correlation expressions in Table 1, assuming a salinity of 35¿, a nitrate concentratio of 30 ¿mol/kg, a phosphate concentratio of 2 ¿mol/kg and a silicate concentratio of 110 ¿mol/kg. Where possible data is from the Pacific ocean that shows the greates variations; otherwhise data is from the Atlantic ocean. Quinby-Hunt & Turekian 1983 Brass & Turekian 1974
Seawater 38 Sr 7.8           mg/kg This mean ocean concentratio has been calculated based on the correlation expressions in Table 1, assuming a salinity of 35¿, a nitrate concentratio of 30 ¿mol/kg, a phosphate concentratio of 2 ¿mol/kg and a silicate concentratio of 110 ¿mol/kg. Species = PO4. Where possible data is from the Pacific ocean that shows the greates variations; otherwhise data is from the Atlantic ocean. Quinby-Hunt & Turekian 1983 Brass & Turekian 1974
Seawater 38 Sr 8000           ppb Average concentration of elements in unfiltered seawater.  These values are used in conjuction with concentrations taken from the same elements in filtered river water and then used in equations (given in Li 1982) to determine mean oceanic residence time of particular elements.  Problems arise however with the relative pollution found in average river waters, and a lack of adequate data for filtered seawater to make a better comparison to filtered river water (which in this instance is found to be the most ideal comparison, yet the most difficult to perform). Li 1982 Turekian & Wedepohl 1961
Brewer 1975

Seawater 38 Sr 7800000             Elemental average concentrations of the deep Atlantic and deep Pacific waters summarized by Whitfield & Turner 1987.  Li 1991 Whitfield & Turner 1987
Seawater 38 Sr 90             Global strontium content in seawater which has been found in this study to not be in a steady state as was previously believed. Hydrothermal flux and riverine input have caused the concentration to vary greatly. Palmer & Edmond 1989
Scotia Island Basalt   87Sr/86Sr 0.70337             Average major and trace element values for Scotian Arc Basalts given in weight percent and parts per million respectively. Kelemen et al. 2004
Scotia Island Basalt 38 Sr 202         16 ppm Average major and trace element values for Scotian Arc Basalts given in weight percent and parts per million respectively. Kelemen et al. 2004
Schelde River   87Sr/86Sr 0.7088             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989
Schelde River 38 Sr 5.065             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989
Sao Francisco River   87Sr/86Sr 0.717             Estimated 87Sr/86Sr ratios normalized to a value of 0.7080. Precision is of no importance in measurements here due to the seasonal variation which causes concentration values to fluxuate. Palmer & Edmond 1989
Sao Francisco River 38 Sr 0.253             Estimated Sr concentrations derived from fluvial Ca data due to the precipitation of Sr with calcium carbonates in the sea. Sr concentrations were determined using standard mass spectrometric techniques. Palmer & Edmond 1989
Sandstones 38 Sr 27           ppm Condie 1993
Sandstones 38 Sr 35           ppm Condie 1993
Sandstones 38 Sr 18           ppm Condie 1993
Salween River   87Sr/86Sr 0.7102             Estimated 87Sr/86Sr ratios normalized to a value of 0.7080. Precision is of no importance in measurements here due to the seasonal variation which causes concentration values to fluxuate. Palmer & Edmond 1989
Salween River 38 Sr 3.393             Estimated Sr concentrations derived from fluvial Ca data due to the precipitation of Sr with calcium carbonates in the sea. Sr concentrations were determined using standard mass spectrometric techniques. Palmer & Edmond 1989
Saguenay River   87Sr/86Sr 0.7131             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Saguenay River 38 Sr 0.263             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Ryuku Trench 38 Sr 217           ppm Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 4 or low. Plank & Langmuir 1998
Rupert River   87Sr/86Sr 0.7283             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Rupert River 38 Sr 0.08             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Rivers   87Sr/86Sr 0.7119             Global average of isotopic strontium content due to continental runoff and river input. This value is much higher than was originally given by previous references which partly accounts for the rise in the global Sr budget across the board. Palmer & Edmond 1989
Rivers 38 Sr 70           ppb Average concentration of elements in filtered river water.  These values are used in conjuction with concentrations taken from the same elements in unfiltered sea water and then used in equations given in Li 1982 to determine mean oceanic residence time of particular elements.  Problems arise however with the relative pollution found in average river waters, and a lack of adequate data for filtered seawater to make a better comparison to filtered river water (which in this instance is found to be the most ideal comparison, yet the most difficult to perform). Li 1982
Rivers 38 Sr 0.89             Global strontium content input to the oceans by continental runoff by rivers. Palmer & Edmond 1989
River Particulates 38 Sr 150           µg/g World averages for suspended matter in major world rivers. This particular array of rivers can lead to slightly biased results for certain trace elements since those elements are usually measured in temperate and/or arctic rivers. All averages for major elements are weighted according to the suspended load prior to the construction of dams, as for trace elements the average contents are mean values. Martin & Meybeck 1979
Rio Grande River   87Sr/86Sr 0.7092             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989
Rio Grande River 38 Sr 3.247             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989
Rifted Continental Margins 38 Sr 357           ppm Lower crustal rocks are combined in proportions as indicated in Figure 2. Average compositions were calculated using mafic granulitic xenoliths since these xenoliths are believed to represent the lowermost continental crust. Rudnick & Fountain 1995
Rifted Continental Margins 38 Sr 320           ppm Rudnick & Fountain 1995
Rhone River   87Sr/86Sr 0.7087             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Albarede & Michard 1987
Rhone River 38 Sr 5.936             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Albarede & Michard 1987
Rhine River   87Sr/86Sr 0.7092             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989
Rhine River 38 Sr 6.227             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989
Retort Phosphatic Shale Member 38 Sr 0.03         20 ppm Average phosphorite of Retort Phosphatic Shale Member of Phosphoria formation.  Modal values used for minor elements. Gulbrandsen 1966
REE Unfractionated CAI Inclusions 38 Sr 35     28 43 2 ppm CaAl-rich aggregates with unfractionated chondrite-normalized REE abundance patterns except for negative Eu and Yb anomalies.  This group is similar to the Group II aggregates with only small differences. Martin & Mason 1974
REE Fractionated CAI Inclusions 38 Sr 37     18 73 5 ppm Ca-Al rich aggregates with fractionated chondrite normalized REE abundance patterns composed mainly of spinel, fassaite, melilite and/or grossular and minor amounts of nepheline and sodalite. Martin & Mason 1974
Radiolarites   87Sr/86Sr 0.71055         4   Average of 4 radiolarite analyses that have been corrected using dilution factors based on the down-core logging for SiO2 contents. Plank & Langmuir 1998
Radiolarites   87Sr/86Sr 0.7106             Estimated Isotopic composition of the 4th layer in the sediment column of DSDP Hole 801. Isotope ratios were derived from several outside sources. Elliot et al. 1997
Radiolarites   87Sr/86Sr 0.71055         17   Average of 17 combined analyses weighted by interval height. Plank & Langmuir 1998
Radiolarites 38 Sr 71         17 ppm Average of 17 combined analyses weighted by interval height. Plank & Langmuir 1998
Radiolarites 38 Sr 49           ppm Estimates of the composition of the Radiolarite section of the sediment column from DSDP Hole 801. This section comprises the final layer of the column and all element values were estimated according to methods of Plank and Ludden 1992. Elliot et al. 1997
Radiolarites 38 Sr 49         4 ppm Average of 4 radiolarite analyses that have been corrected using dilution factors based on the down-core logging for SiO2 contents. Plank & Langmuir 1998
Radiolarian Clay   87Sr/86Sr 0.71957         11   This section contains 17% biogenic opal but the analyses were not diluted based on there SiO2 content. Since the average Rb concentratio is equal to the simple average in 11 analyses, simple averaging is applied here. Plank & Langmuir 1998
Radiolarian Clay 38 Sr 179         8 ppm The bulk composition of the radiolarian clay was calculated by first estimating the composition of the average clay in the region and then diluting it by 15% biogenic SiO2. Plank & Langmuir 1998
Radiolarian Clay 38 Sr 179         8 ppm The bulk composition of the radiolarian clay was calculated by first estimating the composition of the average clay in the region and then diluting it by 15% biogenic SiO2. Plank & Langmuir 1998
Radiolarian Clay 38 Sr 115         2 ppm The bulk composition of the radiolarian clay was calculated by first estimating the composition of the average clay in the region and then diluting it by 30% biogenic SiO2. Plank & Langmuir 1998
Radiolarian Clay 38 Sr 88         11 ppm This section contains 17% biogenic opal but the analyses were not diluted based on there SiO2 content. Since the average Rb concentratio is equal to the simple average in 11 analyses, simple averaging is applied here. Plank & Langmuir 1998
QUE 94201 Meteorite 38 Sr 70   15       ppm Mars elemental abundances as given by QUE94201 meteorite, which is a basalitc shergottite, as given in Lodders 1988. McSween, Jr. 2004 Lodders 1998
Pungo River Formation 38 Sr 5000         2 ppm Pelletal phosphorites, quartzose and clayey, associated with limestones, sands, and silts of estuarine and near shore coastal plain platform (Pungo River formation, North Carolina, U.S.A.): average of two composites: concentrates from prospecting composites of entire mined zone in two areas; P2O5: 30-33%. Detection Limit = 2 ppm. Altschuller 1980
Protolith Gabbros at ODP Site 735   87Sr/86Sr 0.702812         8   Average of 8 protolith samples as defined in the footnote of Table 2 and Table 1. Hart et al. 1999
Protolith Gabbros at ODP Site 735 38 Sr 157         8 ppm Average of 8 protolith samples as defined in the footnote of Table 2 and Table 1. Hart et al. 1999
Protolith Gabbros at ODP Site 735   Sr/Sr* 2.5         8   Average of 8 protolith samples as defined in the footnote of Table 2 and Table 1. Hart et al. 1999
Primitive Mantle   Rb/Sr 0.029             Abundances for K, Rb, Cs and Ba in the primitive mantle published in various different sources, used by Hofmann and White 1983 to validate abundance values attained by their analysis.  Most all values are in general agreement between all sources and the analysis of Hofmann and White, except for Cs/Rb which has major discrepancies with previously published data which cannot be deciphered using the Hofmann & White analysis alone. Hofmann & White 1983 Jacobsen & Wasserburg 1979
Primitive Mantle   Rb/Sr 0.029             Abundances for K, Rb, Cs and Ba according to analysis performed by Hofmann and White 1983.  Abundance values found to be in agreement with published values for these same elements, aside from Cs, which was far from previously published data.  Hofmann & White 1983
Primitive Mantle   Rb/Sr 0.025             Abundances for K, Rb, Cs and Ba in the primitive mantle published in various different sources, used by Hofmann and White 1983 to validate abundance values attained by their analysis.  Most all values are in general agreement between all sources and the analysis of Hofmann and White, except for Cs/Rb which has major discrepancies with previously published data which cannot be deciphered using the Hofmann & White analysis alone. Hofmann & White 1983 Smith 1977
Primitive Mantle   Rb/Sr 0.03             Element ratios from the Primitive Mantle as given by Hofmann 1988. Gao et al. 1998 Hofmann 1988
Primitive Mantle   Rb/Sr 0.035             Abundances for K, Rb, Cs and Ba in the primitive mantle published in various different sources, used by Hofmann and White 1983 to validate abundance values attained by their analysis.  Most all values are in general agreement between all sources and the analysis of Hofmann and White, except for Cs/Rb which has major discrepancies with previously published data which cannot be deciphered using the Hofmann & White analysis alone. Hofmann & White 1983 Ringwood & Kesson 1977
Primitive Mantle   Rb/Sr 0.032             Abundances for K, Rb, Cs and Ba in the primitive mantle published in various different sources, used by Hofmann and White 1983 to validate abundance values attained by their analysis.  Most all values are in general agreement between all sources and the analysis of Hofmann and White, except for Cs/Rb which has major discrepancies with previously published data which cannot be deciphered using the Hofmann & White analysis alone. Hofmann & White 1983 Ganapathy & Anders 1974
Primitive Mantle   Rb/Sr 0.029             Abundances for K, Rb, Cs and Ba in the primitive mantle published in various different sources, used by Hofmann and White 1983 to validate abundance values attained by their analysis.  Most all values are in general agreement between all sources and the analysis of Hofmann and White, except for Cs/Rb which has major discrepancies with previously published data which cannot be deciphered using the Hofmann & White analysis alone. Hofmann & White 1983 Jagoutz et al. 1979
Primitive Mantle   Rb/Sr 0.03             Abundances for K, Rb, Cs and Ba in the primitive mantle published in various different sources, used by Hofmann and White 1983 to validate abundance values attained by their analysis.  Most all values are in general agreement between all sources and the analysis of Hofmann and White, except for Cs/Rb which has major discrepancies with previously published data which cannot be deciphered using the Hofmann & White analysis alone. Hofmann & White 1983 Sun & Nesbitt 1977
Primitive Mantle   Rb/Sr 0.035             Abundances for K, Rb, Cs and Ba in the primitive mantle published in various different sources, used by Hofmann and White 1983 to validate abundance values attained by their analysis.  Most all values are in general agreement between all sources and the analysis of Hofmann and White, except for Cs/Rb which has major discrepancies with previously published data which cannot be deciphered using the Hofmann & White analysis alone. Hofmann & White 1983 Larimer 1971
Primitive Mantle   Rb/Sr 0.24             Abundances for K, Rb, Cs and Ba in the primitive mantle published in various different sources, used by Hofmann and White 1983 to validate abundance values attained by their analysis.  Most all values are in general agreement between all sources and the analysis of Hofmann and White, except for Cs/Rb which has major discrepancies with previously published data which cannot be deciphered using the Hofmann & White analysis alone.  Hofmann & White 1983 Palme et al. 1981
Primitive Mantle   Rb/Sr 0.022             Abundances for K, Rb, Cs and Ba in the primitive mantle published in various different sources, used by Hofmann and White 1983 to validate abundance values attained by their analysis.  Most all values are in general agreement between all sources and the analysis of Hofmann and White, except for Cs/Rb which has major discrepancies with previously published data which cannot be deciphered using the Hofmann & White analysis alone. Hofmann & White 1983 Shaw 1972
Primitive Mantle 38 Sr 21           ppm Concentration of the Primitive mantle as given by McDonough & Frey 1989 and Sun 1982. Values given are placed next to average concentrations of Continental lithospheric mantle in an effort to calculate the proportional contribution to the Primitive mantle. This calculation assumes that the Continental lithospheric mantle is 1.45% the mass of the Primitive mantle. McDonough 1990 McDonough & Frey 1989
Sun 1982
Primitive Mantle 38 Sr 18.21           ppm Trace element abundances in the Earth's Primitive mantle given in ppm as was first found by Hart and Zindler 1986. The major element factor of 2.51 was used to obtain the mantle values of the refractory trace elements from the abundances of C1 Carbonaceous chondrites. Hofmann 1988 Hart & Zindler 1986
Primitive Mantle 38 Sr   21         ppm McDonough 1991 McDonough & Frey 1989
Sun 1982
Primitive Mantle 38 Sr 11.4           ppm The 'Second Approach' to calculate primitive mantle composition (according to Wedepohl & Hartmann 1991) utilizing 97.2% Balmuccia peridotite plus 2.8% bulk crust concentrations of 40 elements. The 2.8% infusing of bulk crust concentrations is due to the 3-6% parital melt loss of MORB-type prior to forming Balmuccia lherzolites. The 3-6% MORB therefore must be replaced in the Balmuccia lherzolite in the form of volatile elements so as to mimic the original concentrations of the primitive mantle. Wedepohl & Hartmann 1994 Wedepohl 1991
Primitive Mantle 38 Sr 19.6           ppm Minor and trace element concentrations of the Primitive Mantle according to 4 sources (Jagoutz et al. 1979, Hart&Zindler 1986, Morgan 1986, Hofmann 1986) used as balances for calculations. Wedepohl & Hartmann 1994 Hart & Zindler 1986
Primitive Mantle 38 Sr 25           ppm Minor and trace element concentrations of the Primitive Mantle according to 4 sources (Jagoutz et al. 1979, Hart&Zindler 1986, Morgan 1986, Hofmann 1986) used as balances for calculations. Wedepohl & Hartmann 1994 Jagoutz et al. 1979
Primitive Mantle 38 Sr 18.2           ppm Minor and trace element concentrations of the Primitive Mantle according to 4 sources (Jagoutz et al. 1979, Hart&Zindler 1986, Morgan 1986, Hofmann 1986) used as balances for calculations. Wedepohl & Hartmann 1994 Hofmann 1988
Primitive Mantle 38 Sr 20.3           ppm Elemental abundances of the Primitive Mantle of the Earth as given by various sources. This set of values are given as a comparison to those of the Bulk Continental Crust given by Rudnick & Gao of the Treatise on Geochemistry Chapter 3.1. Palme & O'Neill 2004
Primitive Mantle 38 Sr 19.9   1.99       ppm Pyrolite model for the silicate Earth composition based on peridotites, komatiites and basalts. Error estimate is subjective. McDonough & Sun 1995
Primitive Mantle 38 Sr 20.3   2.03       ppm Elemental composition of the Primitive Mantle of the Earth as given from this study and other various sources. These elemental values are compared to those of CI Chondrites given by Palme & Jones 2004 Treatise of Geochemistry. Comments given by the authors in reference to these values: RLE Palme & O'Neill 2004
Primitive Mantle   Sr/Nd 15.3             Element ratios from the Primitive Mantle as given by Hofmann 1988. Gao et al. 1998 Hofmann 1988
Primitive Mantle   Sr/Sm 47.1             Element ratios from the Primitive Mantle as given by Hofmann 1988. Gao et al. 1998 Hofmann 1988
Precambrian Granulites 38 Sr 317         88 ppm Shaw et al. 1986
Precambrian Canadian Shield 38 Sr 316           ppm Shaw et al. 1986
Post-Archean Terrrains 38 Sr 310           ppm Major and minor element composition of the Upper Continental Crust as given by Eade and Fahrig 1971. Shaw et al. 1986 Eade & Fahrig 1971
Phosphoria Formation 38 Sr 1000         60 ppm Dark pelletal shaly phosphorites, average of the Retort (20) and Meade Peak (40) phosphatic shale members of the Phosphoria formation of the North Rocky Mountains, associated with black chert, shale and carbonates of the Permian geosyncline, P2O5 = 23-37%. Detection Limit = 2 ppm. Altschuller 1980 Gulbrandsen 1966
Phosphoria Formation 38 Sr   1000         ppm Rare-metal contents with modes above threshold values in phosphorites. Gulbrandsen 1966
Phosphoria Formation 38 Sr 0.1         61 ppm Average phosphorite of Phosphoria formation.  Modal values used for minor elements. Gulbrandsen 1966
Phosphoria Formation 38 Sr 0.003         61 ppm Average phosphorite of Phosphoria formation.  Modal values used for minor elements. Gulbrandsen 1966
Philippines   87Sr/86Sr 0.7056             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Goldstein & Jacobsen 1987
Philippines 38 Sr 1.41             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Goldstein & Jacobsen 1987
Philip Trench 38 Sr 585           ppm Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 4 or low. Plank & Langmuir 1998
Phanerozoic Flood Basalts   87Sr/86Sr 0.7063         31   Major and trace element compositions as well as selected isotopic composition for Columbia River Flood Basalts NW US (High Ti). Farmer 2004 Hooper & Hawkesworth 1993
Phanerozoic Flood Basalts   87Sr/86Sr 0.7045         18   Major and trace element compositions as well as selected isotopic composition for Deccan Traps Flood Basalts Kolhapur (Low Ti). Farmer 2004 Lightfoot et al. 1990
Phanerozoic Flood Basalts   87Sr/86Sr 0.706         1   Major and trace element compositions as well as selected isotopic composition for Parana Flood Basalts in Urubici (High Ti). Farmer 2004 Peate 1997
Phanerozoic Flood Basalts   87Sr/86Sr 0.7073         1   Major and trace element compositions as well as selected isotopic composition for Parana Flood Basalts in Gramado (Low Ti). Farmer 2004 Peate 1997
Phanerozoic Flood Basalts   87Sr/86Sr 0.7058         1   Major and trace element compositions as well as selected isotopic composition for Parana Flood Basalts in Esmeralda (High Ti). Farmer 2004 Peate 1997
Phanerozoic Flood Basalts   87Sr/86Sr 0.7063         3   Major and trace element compositions as well as selected isotopic composition for Siberian Traps Flood Basalt Gudchikhinsky (Low Ti). Farmer 2004 Wooden et al. 1993
Phanerozoic Flood Basalts   87Sr/86Sr 0.7078         5   Major and trace element compositions as well as selected isotopic composition for Siberian Traps Flood Basalts Nadezhdinsky (High Ti). Farmer 2004 Wooden et al. 1993
Phanerozoic Flood Basalts   87Sr/86Sr 0.7066         6   Major and trace element compositions as well as selected isotopic composition for Deccan Traps Flood Basalts Mahabaleshwar (High Ti). Farmer 2004 Lightfoot et al. 1990
Phanerozoic Flood Basalts 38 Sr 307         7 ppm Major and trace element compositions as well as selected isotopic composition for Siberian Traps Flood Basalt Gudchikhinsky (Low Ti). Farmer 2004 Wooden et al. 1993
Phanerozoic Flood Basalts 38 Sr 163         1 ppm Major and trace element compositions as well as selected isotopic composition for Parana Flood Basalts in Esmeralda (High Ti). Farmer 2004 Peate 1997
Phanerozoic Flood Basalts 38 Sr 216         1 ppm Major and trace element compositions as well as selected isotopic composition for Parana Flood Basalts in Gramado (Low Ti). Farmer 2004 Peate 1997
Phanerozoic Flood Basalts 38 Sr 764         1 ppm Major and trace element compositions as well as selected isotopic composition for Parana Flood Basalts in Urubici (High Ti). Farmer 2004 Peate 1997
Phanerozoic Flood Basalts 38 Sr 234         18 ppm Major and trace element compositions as well as selected isotopic composition for Deccan Traps Flood Basalts Kolhapur (Low Ti). Farmer 2004 Lightfoot et al. 1990
Phanerozoic Flood Basalts 38 Sr 259         9 ppm Major and trace element compositions as well as selected isotopic composition for Siberian Traps Flood Basalts Nadezhdinsky (High Ti). Farmer 2004 Wooden et al. 1993
Phanerozoic Flood Basalts 38 Sr 283         6 ppm Major and trace element compositions as well as selected isotopic composition for Deccan Traps Flood Basalts Mahabaleshwar (High Ti). Farmer 2004 Lightfoot et al. 1990
Phanerozoic Flood Basalts 38 Sr 323         36 ppm Major and trace element compositions as well as selected isotopic composition for Columbia River Flood Basalts NW US (High Ti). Farmer 2004 Hooper & Hawkesworth 1993
Petit Mecatina River   87Sr/86Sr 0.7105             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Petit Mecatina River 38 Sr 0.148             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Peru Trench 38 Sr 830           ppm Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 4 or low. Plank & Langmuir 1998
Periodotite Section in Ophiolites 38 Sr   7         ppm McDonough 1991
Peninsular Range Batholith   Eu/Sr 0.0017             Analysis of Archean Calc-Alkaline Type 1 & 2 Granite represented in major and minor element abundances as well as slected trace element ratios given by Martin 1995 but plotted in Figure 5 of Kemp & Hawkesworth 2004. Kemp & Hawkesworth 2004 Sylvester 1995
Peninsular Range Batholith   Rb/Sr 0.27             Analysis of Archean Calc-Alkaline Type 1 & 2 Granite represented in major and minor element abundances as well as slected trace element ratios given by Martin 1995 but plotted in Figure 5 of Kemp & Hawkesworth 2004. Kemp & Hawkesworth 2004 Sylvester 1995
Peninsular Range Batholith 38 Sr 455           ppm Analysis of Archean Calc-Alkaline Type 1 & 2 Granite represented in major and minor element abundances as well as slected trace element ratios given by Martin 1995 but plotted in Figure 5 of Kemp & Hawkesworth 2004. Kemp & Hawkesworth 2004 Sylvester 1995
Peninsular Range Batholith   Sr/Nd 15.69             Analysis of Archean Calc-Alkaline Type 1 & 2 Granite represented in major and minor element abundances as well as slected trace element ratios given by Martin 1995 but plotted in Figure 5 of Kemp & Hawkesworth 2004. Kemp & Hawkesworth 2004 Sylvester 1995
Pelites 38 Sr 107         1341 ppm Average of 1238 subsamples and 103 composites. Gao et al. 1998
Pelites 38 Sr 269         69 ppm Average of 60 subsamples and 9 composites. Gao et al. 1998
Pelagic Clay   87Sr/86Sr 0.70822         6   Average of 6 analyses weighted by depth interval. Plank & Langmuir 1998
Pelagic Clay   87Sr/86Sr 0.7082             The uppermost layer of the sediment from Hole 801 of ODP Leg 129. Values given are estimates of the isotopic composition of this 65m layer based on several sources outside of this study. Elliot et al. 1997
Pelagic Clay   87Sr/86Sr 0.71271         3   Middle 30 m of a total section that is 335 m thick (Site 581) dominated by pelagic clay. Plank & Langmuir 1998
Pelagic Clay   87Sr/86Sr 0.70822         6   Average of 6 analyses weighted by depth interval. Plank & Langmuir 1998
Pelagic Clay 38 Sr 165         55 ppm ODP Site through the toe of the accretionary prism into the basement. Only 350 m of sediments underneath the decollement are considered and used in a simple mean for this homogeneous sedimentary section that was sampled 55 times for every 3-13 m of section. Plank & Langmuir 1998
Pelagic Clay 38 Sr 163         3 ppm Middle 30 m of a total section that is 335 m thick (Site 581) dominated by pelagic clay. Plank & Langmuir 1998
Pelagic Clay 38 Sr 252         6 ppm Average of 6 analyses weighted by depth interval. Plank & Langmuir 1998
Pelagic Clay 38 Sr 245         56 ppm Average of 56 sediments of Cretaceous age representing a diverse lithology including brown, gray, nanno, radiolarian and streaky clays. This section also includes turbidites and is very similar in composition as Site 765 in the East Sunda trench. This average is therefore based on both Site 261 and 765 data. Plank & Langmuir 1998
Pelagic Clay 38 Sr 203         8 ppm Average of 8 sediments that are all younger than Campanian-Maastrichtian and are typically Fe-rich clays. The basal sediments may be of hydrothermal origin. Plank & Langmuir 1998
Pelagic Clay 38 Sr 196         6 ppm Average of 6 analyses weighted by depth interval. Plank & Langmuir 1998
Pelagic Clay 38 Sr 196           ppm The uppermost layer of the sediment from Hole 801 of ODP Leg 129. Values given are estimates of the composition of this 65m layer based on the methodology of Plank and Ludden 1992. Elliot et al. 1997
Pelagic Clay 38 Sr 245         56 ppm Average of 56 sediments of Cretaceous age representing a diverse lithology including brown, gray, nanno, radiolarian and streaky clays. This section also includes turbidites and is very similar in composition as Site 765 in the East Sunda trench. This average is therefore based on both Site 261 and 765 data. Plank & Langmuir 1998
Pearl River   87Sr/86Sr 0.7119             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989
Pearl River 38 Sr 0.767             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989
Parana River Particulates 38 Sr 150           µg/g Elemental particulates in major South American rivers. Averages for major elements are weighted according to the suspended load prior to the construction of dams, for trace elements the average contents are mean values. Martin & Meybeck 1979
Parana River   87Sr/86Sr 0.7139             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989
Parana River 38 Sr 0.518             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989
Paleozoic Upper Crust   Ba/Sr 2.8             Restoration model. Concentrations are calculated after restoration of the amount of crust lost be erosion, in particular, important when estimating the composition of juvenile continental crust. The restoration is performed based on geologic maps and stratigraphic successions as summarized in Table 2. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Paleozoic Upper Crust   Ba/Sr 2.6             Map model. Concentrations are directly calculated from rock proportions scaled from geologic maps and stratigraphic successions as summarized in Table 2. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Paleozoic Upper Crust   Rb/Sr 0.34             Map model. Concentrations are directly calculated from rock proportions scaled from geologic maps and stratigraphic successions as summarized in Table 2. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Paleozoic Upper Crust   Rb/Sr 0.39             Restoration model. Concentrations are calculated after restoration of the amount of crust lost be erosion, in particular, important when estimating the composition of juvenile continental crust. The restoration is performed based on geologic maps and stratigraphic successions as summarized in Table 2. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Paleozoic Upper Crust 38 Sr 262           ppm Map model. Concentrations are directly calculated from rock proportions scaled from geologic maps and stratigraphic successions as summarized in Table 2. Condie 1993
Paleozoic Upper Crust 38 Sr 256           ppm Restoration model. Concentrations are calculated after restoration of the amount of crust lost be erosion, in particular, important when estimating the composition of juvenile continental crust. The restoration is performed based on geologic maps and stratigraphic successions as summarized in Table 2. Condie 1993
Paleozoic Orogens 38 Sr 327           ppm Lower crustal rocks are combined in proportions as indicated in Figure 2. Average compositions were calculated using mafic granulitic xenoliths since these xenoliths are believed to represent the lowermost continental crust. Rudnick & Fountain 1995
Paleozoic Orogens 38 Sr 304           ppm Rudnick & Fountain 1995
Oulad Abdoun Basin 38 Sr 1500         4 ppm Clayey pelletal phosphorites, associated with limestones, cherts and clays of Oulad Abdoun Basin carbonate platform of Morocco; composite samples of mining production in four localities, representing 10,000 tons, P2O5: 33%. Detection Limit = 2 ppm. Altschuller 1980
Orinoco River Particulates 38 Sr 83           µg/g Elemental particulates in major South American rivers. Averages for major elements are weighted according to the suspended load prior to the construction of dams, for trace elements the average contents are mean values. Martin & Meybeck 1979
Orinoco River   87Sr/86Sr 0.7183             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989
Orinoco River 38 Sr 0.21             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989
Orgueil Chondrite 38 Sr 7.8         15 ppm Orgueil meteorite measurements. Anders & Grevesse 1989
Orgueil Chondrite 38 Sr 7.91         12 ppm Solar system abundances of major and minor elements as based on studies from the Orgueil Meteorite. Abundances in the Orgueil meteorite are adequately close to the C1 chondrite mean except for REE, in which case other studies will yield more preferable results Anders & Ebihara 1982
Orangeite   87Sr/86Sr       0.7071 0.7109 114   Average major and trace element composition and selected isotopic data for Orangeites from Swartuggens, Finisch, Bellsbank and Sover kimberlite localities in South Africa. Farmer 2004 Mitchell 1995
Orangeite 38 Sr 1105         114 ppm Average major and trace element composition and selected isotopic data for Orangeites from Swartuggens, Finisch, Bellsbank and Sover kimberlite localities in South Africa. Farmer 2004 Mitchell 1995
Orange River   87Sr/86Sr 0.7146             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989
Orange River 38 Sr 1.851             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989
Olivine Chondrules 38 Sr 18     13 20 3 ppm Olivine rich chondrules and aggregates that have an REE abundance pattern averaging three times that of chondrites with a slight Ce anomaly and a slight negative Eu anomaly. Martin & Mason 1974
ODP/DSDP Site 417/418   87Sr/86Sr 0.704575             Super composite DSDP/ODP Site 417/418. Staudigel et al. 1995
ODP/DSDP Site 417/418   87Sr/86Sr 0.704575             This analysis represents a super-composite for DSDP Sites 417 and 418 combined. The recipe for this composite can be found in Appendix 1. Staudigel et al. 1996
ODP/DSDP Site 417/418 38 Sr 115           ppm This analysis represents a super-composite for DSDP Sites 417 and 418 combined. The recipe for this composite can be found in Appendix 1. Staudigel et al. 1996
ODP/DSDP Site 417/418 38 Sr 180           ppm Super composite DSDP/ODP Site 417/418. Measurements by XRF. Staudigel et al. 1995
ODP Site 735   87Rb/86Sr 0.006             Average of 22 composite strip samples as defined in Table 1. Hart et al. 1999
ODP Site 735   87Sr/86Sr 0.702921 0.7029       22   Average of 22 composite strip samples as defined in Table 1. Hart et al. 1999
ODP Site 735 38 Sr 157.8 161.7       22 ppm Average of 22 composite strip samples as defined in Table 1. Hart et al. 1999
ODP Site 735   Sr/Sr* 1.005 1.291       22   Average of 22 composite strip samples as defined in Table 1. Hart et al. 1999
Oceans Surface water 38 Sr 7.404           mg/kg Surface or near-surface concentratio. Where possible data is from the Pacific ocean that shows the greates variations; otherwhise data is from the Atlantic ocean. Depth = 10 m. Quinby-Hunt & Turekian 1983 Brass & Turekian 1974
Oceans Deep water 38 Sr 7.72           mg/kg Deep ocean water is ~1,000 m depth. Where possible data is from the Pacific ocean that shows the greates variations; otherwhise data is from the Atlantic ocean. Depth = 700 m. Quinby-Hunt & Turekian 1983 Brass & Turekian 1974
Oceanic Plateaus   87Sr/86Sr 0.08             Representative analyses of Cretaceous oceanic plateau lavas from the Carribean-Colombian Oceanic Plateau Colombia locality, sample COL472. Values taken from Kerr et al. 2002. Kerr 2004 Kerr et al. 2002
Oceanic Plateaus   87Sr/86Sr 0.26             Representative analyses of Cretaceous oceanic plateau lavas from the Ontong-Java Plateau Maliata locality, sample ML407. Values taken from Tejada et al. 2002. Kerr 2004 Tejada et al. 2002
Oceanic Plateaus   87Sr/86Sr 0.02             Representative analyses of Cretaceous oceanic plateau lavas from the Carribean-Colombian Oceanic Plateau Curacao locality, sample CUR14. Values taken from Kerr et al. 1996b. Kerr 2004 Kerr et al. 1996
Oceanic Plateaus   87Sr/86Sr 0.705783             Representative analyses of Cretaceous oceanic plateau lavas from the Kerguelen Plateau ODP site 747, sample 16-5 and 103-6.  Information taken from Salters et al. 1992. Kerr 2004 Salters et al. 1992
Oceanic Plateaus   87Sr/86Sr 0.70433             Representative analyses of Cretaceous oceanic plateau lavas from the Ontong-Java Plateau ODP site 807, sample 75-4 and 46-48. Values taken from Mahoney et al. 1993a. Kerr 2004 Mahoney et al. 1993
Oceanic Plateaus   87Sr/86Sr 0.513197             Representative analyses of Cretaceous oceanic plateau lavas from the Carribean-Colombian Oceanic Plateau Colombia locality, sample COL472. Values taken from Kerr et al. 2002. Kerr 2004 Kerr et al. 2002
Oceanic Plateaus   87Sr/86Sr 0.702961             Representative analyses of Cretaceous oceanic plateau lavas from the Carribean-Colombian Oceanic Plateau Curacao locality, sample CUR14. Values taken from Kerr et al. 1996b. Kerr 2004 Kerr et al. 1996
Oceanic Plateaus   87Sr/86Sr 0.70338             Representative analyses of Cretaceous oceanic plateau lavas from the Carribean-Colombian Oceanic Plateau Colombia locality, sample SDB18. Values taken from Kerr et al. 1997 and Hauff et al. 2000b. Kerr 2004 Kerr et al. 1997
Hauff et al. 2000
Oceanic Plateaus   87Sr/86Sr 0.703207             Representative analyses of Cretaceous oceanic plateau lavas from the Carribean-Colombian Oceanic Plateau Colombia locality, sample VIJ1. Values taken from Kerr et al. 1997 and Hauff et al. 2000b. Kerr 2004 Kerr et al. 1997
Hauff et al. 2000
Oceanic Plateaus   87Sr/86Sr 0.03             Representative analyses of Cretaceous oceanic plateau lavas from the Carribean-Colombian Oceanic Plateau Curacaolocality, sample CUR20. Values taken from Kerr et al. 1996b. Kerr 2004 Kerr et al. 1996
Oceanic Plateaus   87Sr/86Sr 2             Representative analyses of Cretaceous oceanic plateau lavas from the Kerguelen Plateau ODP site 747, sample 16-5 and 103-6.  Information taken from Salters et al. 1992. Kerr 2004 Salters et al. 1992
Oceanic Plateaus   87Sr/86Sr 0.28             Representative analyses of Cretaceous oceanic plateau lavas from the Ontong-Java Plateau ODP site 807, sample 88-3 and 76-79. Values taken from Mahoney et al. 1993a. Kerr 2004 Mahoney et al. 1993
Oceanic Plateaus   87Sr/86Sr 0.70356             Representative analyses of Cretaceous oceanic plateau lavas from the Ontong-Java Plateau ODP site 807, sample 88-3 and 76-79. Values taken from Mahoney et al. 1993a. Kerr 2004 Mahoney et al. 1993
Oceanic Plateaus   87Sr/86Sr 0.70369             Representative analyses of Cretaceous oceanic plateau lavas from the Ontong-Java Plateau Santa Isabel locality, sample I96. Values taken from Tejada et al. 1996. Kerr 2004 Tejada et al. 1996
Oceanic Plateaus   87Sr/86Sr 0.70404             Representative analyses of Cretaceous oceanic plateau lavas from the Ontong-Java Plateau Maliata locality, sample SG1. Values taken from Tejada et al. 2002. Kerr 2004 Tejada et al. 2002
Oceanic Plateaus   87Sr/86Sr 0.705319             Representative analyses of Cretaceous oceanic plateau lavas from the Kerguelen Plateau ODP site 748, sample 79-6 and 90-4.  Information taken from Salters et al. 1992. Kerr 2004 Salters et al. 1992
Oceanic Plateaus   87Sr/86Sr 0.54             Representative analyses of Cretaceous oceanic plateau lavas from the Kerguelen Plateau ODP site 749, sample 15-5 and 125-7.  Information taken from Salters et al. 1992. Kerr 2004 Salters et al. 1992
Oceanic Plateaus   87Sr/86Sr 0.70413             Representative analyses of Cretaceous oceanic plateau lavas from the Ontong-Java Plateau Maliata locality, sample ML407. Values taken from Tejada et al. 2002. Kerr 2004 Tejada et al. 2002
Oceanic Plateaus   87Sr/86Sr 0.56             Representative analyses of Cretaceous oceanic plateau lavas from the Kerguelen Plateau ODP site 748, sample 79-6 and 90-4.  Information taken from Salters et al. 1992. Kerr 2004 Salters et al. 1992
Oceanic Plateaus   87Sr/86Sr 0.06             Representative analyses of Cretaceous oceanic plateau lavas from the Carribean-Colombian Oceanic Plateau Gorgona locality, sample GOR160. Values taken from Aitken & Echeverria, Dupre & Echeverria and Jochum et al. 1991. Kerr 2004 Aitken & Echeverria 1984
Dupre & Echeverria 1984
Jochum et al. 1991
Oceanic Plateaus   87Sr/86Sr 0.13             Representative analyses of Cretaceous oceanic plateau lavas from the Carribean-Colombian Oceanic Plateau DSDP site 150, sample 11-2 and 63-67. Values taken from Hauff et al. 2000b. Kerr 2004 Hauff et al. 2000
Oceanic Plateaus   87Sr/86Sr 0.703215             Representative analyses of Cretaceous oceanic plateau lavas from the Carribean-Colombian Oceanic Plateau Curacaolocality, sample CUR20. Values taken from Kerr et al. 1996b. Kerr 2004 Kerr et al. 1996
Oceanic Plateaus   87Sr/86Sr 0.70426             Representative analyses of Cretaceous oceanic plateau lavas from the Kerguelen Plateau ODP site 749, sample 15-5 and 125-7.  Information taken from Salters et al. 1992. Kerr 2004 Salters et al. 1992
Oceanic Plateaus   87Sr/86Sr 0.19             Representative analyses of Cretaceous oceanic plateau lavas from the Kerguelen Plateau ODP site 750, sample 17-3 and 23-26.  Information taken from Salters et al. 1992. Kerr 2004 Salters et al. 1992
Oceanic Plateaus   87Sr/86Sr 0.02             Representative analyses of Cretaceous oceanic plateau lavas from the Carribean-Colombian Oceanic Plateau Gorgona locality, sample GOR117. Values taken from Aitken & Echeverria, Dupre & Echeverria and Jochum et al. 1991. Kerr 2004 Aitken & Echeverria 1984
Dupre & Echeverria 1984
Jochum et al. 1991
Oceanic Plateaus   87Sr/86Sr 0.703546             Representative analyses of Cretaceous oceanic plateau lavas from the Carribean-Colombian Oceanic Plateau DSDP site 150, sample 11-2 and 63-67. Values taken from Hauff et al. 2000b. Kerr 2004 Hauff et al. 2000
Oceanic Plateaus   87Sr/86Sr 0.703041             Representative analyses of Cretaceous oceanic plateau lavas from the Carribean-Colombian Oceanic Plateau Gorgona locality, sample GOR160. Values taken from Aitken & Echeverria, Dupre & Echeverria and Jochum et al. 1991. Kerr 2004 Aitken & Echeverria 1984
Dupre & Echeverria 1984
Jochum et al. 1991
Oceanic Plateaus   87Sr/86Sr 0.72             Representative analyses of Cretaceous oceanic plateau lavas from the Carribean-Colombian Oceanic Plateau Ecuador locality, sample EQ1. Values taken from Reynaud et al. 1999. Kerr 2004 Reynaud et al. 1999
Oceanic Plateaus   87Sr/86Sr 0.706165             Representative analyses of Cretaceous oceanic plateau lavas from the Kerguelen Plateau ODP site 750, sample 17-3 and 23-26.  Information taken from Salters et al. 1992. Kerr 2004 Salters et al. 1992
Oceanic Plateaus   87Sr/86Sr 1.95             Representative analyses of Cretaceous oceanic plateau lavas from the Kerguelen Plateau ODP site 738, sample 34-1 and 88-92. Values taken from Mahoney et al. 1995. Kerr 2004 Mahoney et al. 1995
Oceanic Plateaus   87Sr/86Sr 0.703283             Representative analyses of Cretaceous oceanic plateau lavas from the Carribean-Colombian Oceanic Plateau Gorgona locality, sample GOR117. Values taken from Aitken & Echeverria, Dupre & Echeverria and Jochum et al. 1991. Kerr 2004 Aitken & Echeverria 1984
Dupre & Echeverria 1984
Jochum et al. 1991
Oceanic Plateaus   87Sr/86Sr 0.7032             Representative analyses of Cretaceous oceanic plateau lavas from the Carribean-Colombian Oceanic Plateau Ecuador locality, sample EQ1. Values taken from Reynaud et al. 1999. Kerr 2004 Reynaud et al. 1999
Oceanic Plateaus   87Sr/86Sr 0.13             Representative analyses of Cretaceous oceanic plateau lavas from the Ontong-Java Plateau ODP site 807, sample 75-4 and 46-48. Values taken from Mahoney et al. 1993a. Kerr 2004 Mahoney et al. 1993
Oceanic Plateaus   87Sr/86Sr 0.19             Representative analyses of Cretaceous oceanic plateau lavas from the Carribean-Colombian Oceanic Plateau Gorgona locality, sample GOR94-35. Values taken from unpublished information. Kerr 2004
Oceanic Plateaus   87Sr/86Sr 0.70973             Representative analyses of Cretaceous oceanic plateau lavas from the Kerguelen Plateau ODP site 738, sample 34-1 and 88-92. Values taken from Mahoney et al. 1995. Kerr 2004 Mahoney et al. 1995
Oceanic Plateaus   87Sr/86Sr 0.704767             Representative analyses of Cretaceous oceanic plateau lavas from the Carribean-Colombian Oceanic Plateau Gorgona locality, sample GOR94-35. Values taken from unpublished information. Kerr 2004
Oceanic Plateaus   87Sr/86Sr 0.15             Representative analyses of Cretaceous oceanic plateau lavas from the Carribean-Colombian Oceanic Plateau Colombia locality, sample SDB18. Values taken from Kerr et al. 1997 and Hauff et al. 2000b. Kerr 2004 Kerr et al. 1997
Hauff et al. 2000
Oceanic Plateaus   87Sr/86Sr 0.15             Representative analyses of Cretaceous oceanic plateau lavas from the Ontong-Java Plateau Santa Isabel locality, sample I96. Values taken from Tejada et al. 1996. Kerr 2004 Tejada et al. 1996
Oceanic Plateaus   87Sr/86Sr 0.07             Representative analyses of Cretaceous oceanic plateau lavas from the Carribean-Colombian Oceanic Plateau Colombia locality, sample VIJ1. Values taken from Kerr et al. 1997 and Hauff et al. 2000b. Kerr 2004 Kerr et al. 1997
Hauff et al. 2000
Oceanic Plateaus   87Sr/86Sr 0.15             Representative analyses of Cretaceous oceanic plateau lavas from the Ontong-Java Plateau Maliata locality, sample SG1. Values taken from Tejada et al. 2002. Kerr 2004 Tejada et al. 2002
Oceanic Plateaus 38 Sr 108           ppm Representative analyses of Cretaceous oceanic plateau lavas from the Ontong-Java Plateau Maliata locality, sample SG1. Values taken from Tejada et al. 2002. Kerr 2004 Tejada et al. 2002
Oceanic Plateaus 38 Sr 89           ppm Representative analyses of Cretaceous oceanic plateau lavas from the Carribean-Colombian Oceanic Plateau Colombia locality, sample VIJ1. Values taken from Kerr et al. 1997 and Hauff et al. 2000b. Kerr 2004 Kerr et al. 1997
Hauff et al. 2000
Oceanic Plateaus 38 Sr 6           ppm Representative analyses of Cretaceous oceanic plateau lavas from the Carribean-Colombian Oceanic Plateau Curacao locality, sample CUR14. Values taken from Kerr et al. 1996b. Kerr 2004 Kerr et al. 1996
Oceanic Plateaus 38 Sr 115           ppm Representative analyses of Cretaceous oceanic plateau lavas from the Ontong-Java Plateau Santa Isabel locality, sample I96. Values taken from Tejada et al. 1996. Kerr 2004 Tejada et al. 1996
Oceanic Plateaus 38 Sr 100           ppm Representative analyses of Cretaceous oceanic plateau lavas from the Ontong-Java Plateau Maliata locality, sample ML407. Values taken from Tejada et al. 2002. Kerr 2004 Tejada et al. 2002
Oceanic Plateaus 38 Sr 234           ppm Representative analyses of Cretaceous oceanic plateau lavas from the Kerguelen Plateau ODP site 747, sample 16-5 and 103-6.  Information taken from Salters et al. 1992. Kerr 2004 Salters et al. 1992
Oceanic Plateaus 38 Sr 107           ppm Representative analyses of Cretaceous oceanic plateau lavas from the Ontong-Java Plateau ODP site 807, sample 88-3 and 76-79. Values taken from Mahoney et al. 1993a. Kerr 2004 Mahoney et al. 1993
Oceanic Plateaus 38 Sr 398           ppm Representative analyses of Cretaceous oceanic plateau lavas from the Carribean-Colombian Oceanic Plateau Colombia locality, sample COL472. Values taken from Kerr et al. 2002. Kerr 2004 Kerr et al. 2002
Oceanic Plateaus 38 Sr 156           ppm Representative analyses of Cretaceous oceanic plateau lavas from the Carribean-Colombian Oceanic Plateau Colombia locality, sample SDB18. Values taken from Kerr et al. 1997 and Hauff et al. 2000b. Kerr 2004 Kerr et al. 1997
Hauff et al. 2000
Oceanic Plateaus 38 Sr 1131           ppm Representative analyses of Cretaceous oceanic plateau lavas from the Kerguelen Plateau ODP site 748, sample 79-6 and 90-4.  Information taken from Salters et al. 1992. Kerr 2004 Salters et al. 1992
Oceanic Plateaus 38 Sr 64           ppm Representative analyses of Cretaceous oceanic plateau lavas from the Carribean-Colombian Oceanic Plateau Gorgona locality, sample GOR160. Values taken from Aitken & Echeverria, Dupre & Echeverria and Jochum et al. 1991. Kerr 2004 Aitken & Echeverria 1984
Dupre & Echeverria 1984
Jochum et al. 1991
Oceanic Plateaus 38 Sr 11           ppm Representative analyses of Cretaceous oceanic plateau lavas from the Carribean-Colombian Oceanic Plateau Curacaolocality, sample CUR20. Values taken from Kerr et al. 1996b. Kerr 2004 Kerr et al. 1996
Oceanic Plateaus 38 Sr 214           ppm Representative analyses of Cretaceous oceanic plateau lavas from the Kerguelen Plateau ODP site 749, sample 15-5 and 125-7.  Information taken from Salters et al. 1992. Kerr 2004 Salters et al. 1992
Oceanic Plateaus 38 Sr 16           ppm Representative analyses of Cretaceous oceanic plateau lavas from the Carribean-Colombian Oceanic Plateau DSDP site 150, sample 11-2 and 63-67. Values taken from Hauff et al. 2000b. Kerr 2004 Hauff et al. 2000
Oceanic Plateaus 38 Sr 273           ppm Representative analyses of Cretaceous oceanic plateau lavas from the Kerguelen Plateau ODP site 738, sample 34-1 and 88-92. Values taken from Mahoney et al. 1995. Kerr 2004 Mahoney et al. 1995
Oceanic Plateaus 38 Sr 107           ppm Representative analyses of Cretaceous oceanic plateau lavas from the Carribean-Colombian Oceanic Plateau Gorgona locality, sample GOR117. Values taken from Aitken & Echeverria, Dupre & Echeverria and Jochum et al. 1991. Kerr 2004 Aitken & Echeverria 1984
Dupre & Echeverria 1984
Jochum et al. 1991
Oceanic Plateaus 38 Sr 15           ppm Representative analyses of Cretaceous oceanic plateau lavas from the Carribean-Colombian Oceanic Plateau Ecuador locality, sample EQ1. Values taken from Reynaud et al. 1999. Kerr 2004 Reynaud et al. 1999
Oceanic Plateaus 38 Sr 193           ppm Representative analyses of Cretaceous oceanic plateau lavas from the Kerguelen Plateau ODP site 750, sample 17-3 and 23-26.  Information taken from Salters et al. 1992. Kerr 2004 Salters et al. 1992
Oceanic Plateaus 38 Sr 174           ppm Representative analyses of Cretaceous oceanic plateau lavas from the Ontong-Java Plateau ODP site 807, sample 75-4 and 46-48. Values taken from Mahoney et al. 1993a. Kerr 2004 Mahoney et al. 1993
Oceanic Plateaus 38 Sr 34           ppm Representative analyses of Cretaceous oceanic plateau lavas from the Carribean-Colombian Oceanic Plateau Gorgona locality, sample GOR94-35. Values taken from unpublished information. Kerr 2004
Oceanic Crust 38 Sr 134           ppm Minor and trace element averages for the Oceanic crust based on Hofmann 1988 and Wedepohl 2012 Wedepohl & Hartmann 1994 Wedepohl 1981
Oceanic Crust 38 Sr 113           ppm Minor and trace element averages for the Oceanic crust based on Hofmann 1988 and Wedepohl 2011 Wedepohl & Hartmann 1994 Hofmann 1988
Nuevo Laredo Eucrite 38 Sr 80           µg/g Trace element compositional data on Nuevo Laredo Eucrites. Mittlefehldt 2004 Warren & Jerde 1987
Nottaway River   87Sr/86Sr 0.7186             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Nottaway River 38 Sr 0.126             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Northern Churchill River   87Sr/86Sr 0.7176             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Northern Churchill River 38 Sr 0.08             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Northern Blake Plateau Phosphorites 38 Sr 0.18         8 wt%ox Composition of Blake plateau phosphorite and comparable deposits. Data was taken from analyses of composites of 8 phosphorites. Manheim et al. 1980
North Qinling Belt in China 38 Sr 493           ppm Compostional estimate of the North Qinling orogenic belt. Average composition of granulite terrains. Gao et al. 1998
North Qinling Belt in China 38 Sr 319           ppm Compostional estimate of the Northern Qinling orogenic belt. Average compostion of granulite terrains and calculated on a sedimentary carbonate rock-free basis. Gao et al. 1998
North Qinling Belt in China 38 Sr 209           ppm Compostional estimate of the North Qinling orogenic belt. The middle crust of the North Qinling belt is assumed to consist of the underthrusted South Qinling middle crust (see text for explanation). Gao et al. 1998
North Qinling Belt in China 38 Sr 289           ppm Compostional estimate of the North Qinling orogenic belt. Includes sedimentary carbonates. Gao et al. 1998
North Qinling Belt in China 38 Sr 296           ppm Compostional estimate of the North Qinling orogenic belt. Calculated on a sedimentary carbonate rock-free basis. Gao et al. 1998
North Antilles Trench   87Sr/86Sr 0.71788             Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 2 or high. Plank & Langmuir 1998
North Antilles Trench 38 Sr 111           ppm Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 2 or high. Plank & Langmuir 1998
North American Shale Composite (NASC) 38 Sr 142           ppm Major oxide and minor element compositions for North American Shale Composite. No source reference found in text.  Condie 1993
Niger River Particulates 38 Sr 40           µg/g Elemental particulates in major African rivers. Averages for major elements are weighted according to the suspended load prior to the construction of dams, for trace elements the average contents are mean values. Martin & Meybeck 1979
Niger River   87Sr/86Sr 0.714             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989
Niger River 38 Sr 0.25             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989
New Hebrides Islands   87Sr/86Sr 0.70392         4   Average major and trace element values for New Hebrides Arc Basalts given in weight percent and parts per million respectively. Kelemen et al. 2004
New Hebrides Islands 38 Sr 499.81         21 ppm Average major and trace element values for New Hebrides Arc Basalts given in weight percent and parts per million respectively. Kelemen et al. 2004
Nelson River   87Sr/86Sr 0.7146             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Nelson River 38 Sr 0.856             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Natashquan River   87Sr/86Sr 0.7131             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Natashquan River 38 Sr 0.137             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Nass River   87Sr/86Sr 0.7054             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Nass River 38 Sr 1.107             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Nano Ooze 38 Sr 879         4 ppm Average of 4 nanno oozes after Peate et al. (1997) that have been diluted by the percentages of pure CaCO3 in the drill cores. The biogenic diluent is 28% CaCO3 in this 114 m deep unit. The average was calculated after renormalizing the analyses on a CaCO3-free basis followed by the dilution appropriate for these drill cores. Core estimates have been weigthed by the height of the drilled intervals. Plank & Langmuir 1998
Nanno Ooze 38 Sr 1326         2 ppm Based on the nanno ooze of the nearby Site 320 (Hole et al., 1984) since no geochemical data exists for Site 321. Plank & Langmuir 1998
Nankai Trench 38 Sr 165           ppm Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 1 or highest. Plank & Langmuir 1998
Nakhla Meteorite 38 Sr 59   10       ppm Mars elemental abundances as given by Nakhla meteorite (nakhlite) as given in Lodders 1988. McSween, Jr. 2004 Lodders 1998
N-MORB   87Sr/86Sr 0.7025             Compositie analyses on N-MORB glasses from the Mid-Atlantic Ridge as reported in the RidgePetDB database. Major and most trace elements for this N-type MORB are taken from the sample EW19309-012-00. Klein 2004 Lehnert 2000
N-MORB   87Sr/86Sr 0.70264             Average isotopic values of N-MORB taken from varying sources for comparison to 735B gabbro isotopic composition analyzed in Hart et al. 1999. Hart et al. 1999 Hofmann 1988
Ito et al. 1987
Smith et al. 1995
Hauri & Hart 1997
N-MORB   87Sr/86Sr 0.7025             Analyses on N-MORB from the Mid-Cayman Rise. Glass compositions reported in ReidgePetDB for sample KNO0054-027-005 then augmented with BA, V and Y data on a similar sample reported by Thompson et al. 1980 and the sole isotopic analysis of a Mid-Cayman rise basalt from RidgePetDB. Klein 2004 Thompson et al. 1980
N-MORB   87Sr/86Sr 0.7026             Analyses on N-MORB from the Northern section of the East Pacific Rise as reported by Niu et al. 1999. Klein 2004 Niu et al. 1999
N-MORB   87Sr/86Sr 0.7029             Analyses of Kolbeinsey Ridge N-MORB which is a high F and high P MORB. These analyses were taken from the Ridge PetDB for sample POS0158-404-00 with major and trace elements derived from whole rock powders, Pb, Sr, Rb and isotope ratios derived from glasses. Klein 2004 Lehnert 2000
N-MORB 38 Sr 188           ppm Analyses on N-MORB from the Mid-Cayman Rise. Glass compositions reported in ReidgePetDB for sample KNO0054-027-005 then augmented with BA, V and Y data on a similar sample reported by Thompson et al. 1980 and the sole isotopic analysis of a Mid-Cayman rise basalt from RidgePetDB. Klein 2004 Thompson et al. 1980
N-MORB 38 Sr 94           ppm Compositie analyses on N-MORB glasses from the Mid-Atlantic Ridge as reported in the RidgePetDB database. Major and most trace elements for this N-type MORB are taken from the sample EW19309-012-00. Klein 2004 Lehnert 2000
N-MORB 38 Sr 142           ppm Analyses on N-MORB from the Northern section of the East Pacific Rise as reported by Niu et al. 1999. Klein 2004 Niu et al. 1999
N-MORB 38 Sr 68           ppm Analyses of Kolbeinsey Ridge N-MORB which is a high F and high P MORB. These analyses were taken from the Ridge PetDB for sample POS0158-404-00 with major and trace elements derived from whole rock powders, Pb, Sr, Rb and isotope ratios derived from glasses. Klein 2004 Lehnert 2000
N-MORB 38 Sr 113.2           ppm Values of N-MORB taken from varying sources for comparison to 735B gabbro composition analyzed in Hart et al. 1999. Hart et al. 1999 Hofmann 1988
Ito et al. 1987
Smith et al. 1995
Hauri & Hart 1997
N-MORB 38 Sr 113.2   27.28     26 ppm Trace element average abundances for N-MORB as taken from analysis of 26 fresh MORB glasses defined N-type by the light-REE depletion.  These values were originally measured by Jochum et al. 1988. All standard deviations were calculated from percent values given in Hofmann 1988 (Table 1). Hofmann 1988 Jochum et al. 1988
N-MORB   Sr/Sr* 0.626             Elemental ratio values of N-MORB taken from varying sources for comparison to 735B gabbro composition analyzed in Hart et al. 1999. Hart et al. 1999 Hofmann 1988
Ito et al. 1987
Smith et al. 1995
Hauri & Hart 1997
Murray River   87Sr/86Sr 0.7108             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Goldstein & Jacobsen 1987
Murray River 38 Sr 2.454             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Goldstein & Jacobsen 1987
Murchison River   87Sr/86Sr 0.728             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Goldstein & Jacobsen 1987
Murchison River 38 Sr 12.326             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Goldstein & Jacobsen 1987
Mozambique   87Sr/86Sr 0.716             Estimated 87Sr/86Sr ratios normalized to a value of 0.7080. Precision is of no importance in measurements here due to the seasonal variation which causes concentration values to fluxuate. Palmer & Edmond 1989
Mozambique 38 Sr 1.2             Estimated Sr concentrations derived from fluvial Ca data due to the precipitation of Sr with calcium carbonates in the sea. Sr concentrations were determined using standard mass spectrometric techniques. Palmer & Edmond 1989
MORB Basaltic Glass   87Sr/86Sr 0.702566             MORB Glass MELPHNX-2-GC083 from the East Pacific Rise near the Clipperton Transform that along with 4 other samples from this region form a coherent liquid line of descent for fractional crystalization from the highest MgO magma. Klein 2004 Lehnert 2000
MORB Basaltic Glass   87Sr/86Sr 0.702505             MORB Glass ODP0142-0864A-001M-003/0-3 from the East Pacific Rise near the Clipperton Transform that along with 4 other samples from this region form a coherent liquid line of descent for fractional crystalization from the highest MgO magma. Klein 2004 Lehnert 2000
MORB Basaltic Glass 38 Sr 133           ppm MORB Glass MELPHNX-2-GC083 from the East Pacific Rise near the Clipperton Transform that along with 4 other samples from this region form a coherent liquid line of descent for fractional crystalization from the highest MgO magma. Klein 2004 Lehnert 2000
MORB Basaltic Glass 38 Sr 120           ppm MORB Glass WASRAI2-057-006 from the East Pacific Rise near the Clipperton Transform that along with 4 other samples from this region form a coherent liquid line of descent for fractional crystalization from the highest MgO magma. Klein 2004 Lehnert 2000
MORB Basaltic Glass 38 Sr 122           ppm MORB Glass ODP0142-0864A-001M-003/0-3 from the East Pacific Rise near the Clipperton Transform that along with 4 other samples from this region form a coherent liquid line of descent for fractional crystalization from the highest MgO magma. Klein 2004 Lehnert 2000
MORB Basaltic Glass 38 Sr 134           ppm MORB Glass MELPHNX-2-068-001 from the East Pacific Rise near the Clipperton Transform that along with 4 other samples from this region form a coherent liquid line of descent for fractional crystalization from the highest MgO magma. Klein 2004 Lehnert 2000
Moose River   87Sr/86Sr 0.7132             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Moose River 38 Sr 0.479             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Moore County Eucrite 38 Sr 70           µg/g Trace element compositional data on Moore County Eucrite. Mittlefehldt 2004 Barrat et al. 2000
McCarthy et al. 1973
Monterey Formation 38 Sr 1900         5 ppm Dark pelletal shaly phosphorites, associated with radiolaran chert and organic-rich bentonic shales of the Monterey formation Tertiary geosyncline in California, U.S.A., P2O5: 15-20%. Detection Limit = 2 ppm. Altschuller 1980
Moisie River   87Sr/86Sr 0.7163             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Moisie River 38 Sr 0.137             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Mississippi River   87Sr/86Sr 0.7102             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Stordal & Wasserburg 1986
Mississippi River 38 Sr 1.712             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Stordal & Wasserburg 1986
Mishash Formation 38 Sr 1200         3 ppm Calcareous pelletal and bone phosphorite, associated with limestones and cherts of the Mishash Formation Hamakhtesh haQatan carbonate platform, Israel. P2O5: 22-33%. Uranium is average value of 14 samples of P2O5 in excess of 20%. Chemically Determined, U.S. Geological Survey Lab. Detection Limit = 2 ppm. Altschuller 1980 Mazor 1963
Middle Proterozoic Upper Crust   Ba/Sr 2.5             Restoration model. Concentrations are calculated after restoration of the amount of crust lost be erosion, in particular, important when estimating the composition of juvenile continental crust. The restoration is performed based on geologic maps and stratigraphic successions as summarized in Table 2. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Middle Proterozoic Upper Crust   Ba/Sr 2.4             Map model. Concentrations are directly calculated from rock proportions scaled from geologic maps and stratigraphic successions as summarized in Table 2. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Middle Proterozoic Upper Crust   Rb/Sr 0.35             Restoration model. Concentrations are calculated after restoration of the amount of crust lost be erosion, in particular, important when estimating the composition of juvenile continental crust. The restoration is performed based on geologic maps and stratigraphic successions as summarized in Table 2. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Middle Proterozoic Upper Crust   Rb/Sr 0.31             Map model. Concentrations are directly calculated from rock proportions scaled from geologic maps and stratigraphic successions as summarized in Table 2. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Middle Proterozoic Upper Crust 38 Sr 294           ppm Map model. Concentrations are directly calculated from rock proportions scaled from geologic maps and stratigraphic successions as summarized in Table 2. Condie 1993
Middle Proterozoic Upper Crust 38 Sr 285           ppm Restoration model. Concentrations are calculated after restoration of the amount of crust lost be erosion, in particular, important when estimating the composition of juvenile continental crust. The restoration is performed based on geologic maps and stratigraphic successions as summarized in Table 2. Condie 1993
Middle Continental Crust   Eu/Sr 0.005             Major and minor element composition of the Middle Crust of the Earth with selected trace element ratios as given by Rudnick and Gao 2004. Kemp & Hawkesworth 2004 Rudnick & Gao 2004
Middle Continental Crust   Rb/Sr 0.23             Major and minor element composition of the Middle Crust of the Earth with selected trace element ratios as given by Rudnick and Gao 2004. Kemp & Hawkesworth 2004 Rudnick & Gao 2004
Middle Continental Crust   Rb/Sr 0.22             Rudnick & Fountain 1995
Middle Continental Crust 38 Sr 281           µg/g Major and Minor element compositional estimates of the Middle Continental crust as given by Rudnick and Fountain 1995. Major element oxides are given in wt.% and trace elements abundances are given in ¿g/g or ng/g. Rudnick & Gao 2004 Rudnick & Fountain 1995
Middle Continental Crust 38 Sr 282           ppm Major and minor element composition of the Middle Crust of the Earth with selected trace element ratios as given by Rudnick and Gao 2004. Kemp & Hawkesworth 2004 Rudnick & Gao 2004
Middle Continental Crust 38 Sr 465           µg/g Major and Minor element compositional estimates of the Middle Continental crust as given by Shaw et al. 1994. Major element oxides are given in wt.% and trace elements abundances are given in ¿g/g or ng/g. Rudnick & Gao 2004 Shaw et al. 1994
Middle Continental Crust 38 Sr 283           µg/g Major and Minor element compositional estimates of the Middle Continental crust as given by Gao et al. 1998a. Major element oxides are given in wt.% and trace elements abundances are given in ¿g/g or ng/g. Rudnick & Gao 2004 Gao et al. 1998
Middle Continental Crust 38 Sr 281           ppm Rudnick & Fountain 1995
Middle Continental Crust 38 Sr 580           µg/g Major and Minor element compositional estimates of the Middle Continental crust as given by Weaver and Tarney 1984. Major element oxides are given in wt.% and trace elements abundances are given in ¿g/g or ng/g. Rudnick & Gao 2004 Weaver & Tarney 1984
Middle Continental Crust 38 Sr 282   1       µg/g Major and Minor element compositional estimates of the Middle Continental crust as given by This Study (Rudnick and Gao 2004). Major element oxides are given in wt.% and trace elements abundances are given in ¿g/g or ng/g. Rudnick & Gao 2004
Middle Continental Crust   Sr/Nd 11.28             Major and minor element composition of the Middle Crust of the Earth with selected trace element ratios as given by Rudnick and Gao 2004. Kemp & Hawkesworth 2004 Rudnick & Gao 2004
Middle Continental Crust   Sr/Nd 12             Rudnick & Fountain 1995
Middle Churchill River   87Sr/86Sr 0.72             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Middle Churchill River 38 Sr 0.263             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Mexico Trench 38 Sr 234           ppm Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 2 or high. Plank & Langmuir 1998
Metapelitic Granulitic Xenolites 38 Sr 331 284       69 ppm Median values are used instead of average values in the model calculations to avoid outlyers of small sample populations. Rudnick & Fountain 1995
Metalliferous Clay 38 Sr 252         12 ppm Average of 12 metalliferous clays between 10-30 m depth using DCP analyses. Plank & Langmuir 1998
Metafelsic Volcanics 38 Sr 637         41 ppm Average of 38 subsamples and 3 composites. Gao et al. 1998
Mesozoic & Cenozoic Upper Crust   Ba/Sr 2.8             Restoration model. Concentrations are calculated after restoration of the amount of crust lost be erosion, in particular, important when estimating the composition of juvenile continental crust. The restoration is performed based on geologic maps and stratigraphic successions as summarized in Table 2. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Mesozoic & Cenozoic Upper Crust   Ba/Sr 2.6             Map model. Concentrations are directly calculated from rock proportions scaled from geologic maps and stratigraphic successions as summarized in Table 2. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Mesozoic & Cenozoic Upper Crust   Rb/Sr 0.35             Map model. Concentrations are directly calculated from rock proportions scaled from geologic maps and stratigraphic successions as summarized in Table 2. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Mesozoic & Cenozoic Upper Crust   Rb/Sr 0.39             Restoration model. Concentrations are calculated after restoration of the amount of crust lost be erosion, in particular, important when estimating the composition of juvenile continental crust. The restoration is performed based on geologic maps and stratigraphic successions as summarized in Table 2. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Mesozoic & Cenozoic Upper Crust 38 Sr 262           ppm Restoration model. Concentrations are calculated after restoration of the amount of crust lost be erosion, in particular, important when estimating the composition of juvenile continental crust. The restoration is performed based on geologic maps and stratigraphic successions as summarized in Table 2. Condie 1993
Mesozoic & Cenozoic Upper Crust 38 Sr 271           ppm Map model. Concentrations are directly calculated from rock proportions scaled from geologic maps and stratigraphic successions as summarized in Table 2. Condie 1993
Mesozoic & Cenozoic Orogens 38 Sr 307           ppm Rudnick & Fountain 1995
Mesozoic & Cenozoic Orogens 38 Sr 307           ppm Lower crustal rocks are combined in proportions as indicated in Figure 2. Average compositions were calculated using mafic granulitic xenoliths since these xenoliths are believed to represent the lowermost continental crust. Rudnick & Fountain 1995
Mesozoic & Cenozoic Extensions 38 Sr 307           ppm Lower crustal rocks are combined in proportions as indicated in Figure 2. Average compositions were calculated using mafic granulitic xenoliths since these xenoliths are believed to represent the lowermost continental crust. Rudnick & Fountain 1995
Mesozoic & Cenozoic Extensions 38 Sr 291           ppm Rudnick & Fountain 1995
Melitite-rich Chondrules 38 Sr 136     110 200 10 ppm Melilite-rich chondrules which are spherical aggregates of melilite, Ti-rich fassaite, spinel and anorthite with a coarsely crystalline igneous texture.  These chondrules have high Al2O3 content as well as CaO and an unfractionated REE pattern that averages 10-15 times normal chondritic abundances. Martin & Mason 1974
Mekong River Particulates 38 Sr 92           µg/g Elemental particulates in major Asian rivers. Averages for major elements are weighted according to the suspended load prior to the construction of dams, for trace elements the average contents are mean values. Martin & Meybeck 1979
Mekong River   87Sr/86Sr 0.7102             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989
Mekong River 38 Sr 3.393             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989
Mead Peak Phosphatic Shale Member 38 Sr 0.1         41 ppm Average phosphorite of Meade Peak Phosphatic Shale member of Phosphoria Formation. Modal values used for minor elements. Gulbrandsen 1966
Mavic Volcanics 38 Sr 403         632 ppm Average of 538 subsamples and 49 composites. Gao et al. 1998
Marine Shales 38 Sr 300           ppm Average concentrations of various elements in shales, note that the values are within a factor of two or better as compared to Oceanic Pelagic Clays with a few exceptions.  The exceptions, as far as this reference is concerned, are not critical and any conclusions drawn are applicable to both Oceanic Pelagic Clays and Shales.  Li 1991 Turekian & Wedepohl 1961
Marine Shales 38 Sr 300           ppm Concentrations of trace elements in shale as given by Turekian and Wedepohl 1961. Altschuller 1980 Turekian & Wedepohl 1961
Marine Phosphorites 38 Sr 750 750   70 1900 18 ppm Average trace element abundances in Marine Phosphorite as based on 18 regional averages and various number of analyses averaged. All Comp low values of '0' are actually 'N.D.' values. Altschuller 1980
Marine Pelagic Clay 38 Sr 2000           ppm Average concentrations of elements in oceanic pelagic clays.  The elemental values found in the Pelagic clays give good indications on river input of elements to the oceans.  From river sources to mid oceanic ridge sinks this is also a good indicator of atmospheric conditions for varying periods of world history.   Li 1982 Turekian & Wedepohl 1961
Marine Pelagic Clay 38 Sr 180           ppm Average concentrations for various elements enriched in Oceanic Pelagic Clays.  Compared to the element values of Shales, the Pelagic Clays are relatively similar with few exceptions.   All sea salt components are subtracted from the sample analysis assuming all chloride is of seawater origin. Li 1991 Turekian & Wedepohl 1961
Marine Organisms 38 Sr 1100           ppm Concentration values of various elements found in marine organisms. Element concentrations are mainly from brown algae data from Bowen 1979, which are also indicative of phytoplankton and zooplankton. Li 1991 Bowen 1979
Marianas Trench   87Sr/86Sr 0.70617             Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 1 or highest. Plank & Langmuir 1998
Marianas Trench 38 Sr 161           ppm Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 1 or highest. Plank & Langmuir 1998
Marianas Basalt   87Sr/86Sr 0.70303         45   Average major and trace element values for Marianas Arc Basalts given in weight percent and parts per million respectively. Kelemen et al. 2004
Marianas Basalt 38 Sr 231.78         51 ppm Average major and trace element values for Marianas Arc Basalts given in weight percent and parts per million respectively. Kelemen et al. 2004
Manning River   87Sr/86Sr 0.7063             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Goldstein & Jacobsen 1987
Manning River 38 Sr 1.02             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Goldstein & Jacobsen 1987
Manicougan River   87Sr/86Sr 0.7169             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Manicougan River 38 Sr 0.137             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Manganese Nodules 38 Sr 830           ppm Average concentrations of various elements found in deep sea Manganese nodules.  Sea salt components are subtracted assuming all chloride is of seawater origin. Li 1991 Baturin 1988
Malvern Howardites 38 Sr 59           µg/g Trace element compositional data on Malvern Howardite. Mittlefehldt 2004 Palme et al. 1978
Makran Trench 38 Sr 422           ppm Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 3 or moderate. Plank & Langmuir 1998
Mafic Post-Archean Granulites 38 Sr 378 232       80 ppm Median values are used instead of average values in the model calculations to avoid outlyers of small sample populations. Rudnick & Fountain 1995
Mafic Intrusions 38 Sr 549         308 ppm Average of 276 subsamples and 32 composites. Gao et al. 1998
Mafic Granulitic Xenolites 38 Sr 421 365       207 ppm Median values are used instead of average values in the model calculations to avoid outlyers of small sample populations. Values from kimberlite-hosted xenolites were omitted owing to alteratio effects. Rudnick & Fountain 1995
Mafic Granulites 38 Sr 263         128 ppm Average of 93 subsamples and 35 composites. Gao et al. 1998
Mafic Archean Granulites 38 Sr 227 156       89 ppm Median values are used instead of average values in the model calculations to avoid outlyers of small sample populations. Rudnick & Fountain 1995
Mae Klong River   87Sr/86Sr 0.7164             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989
Mae Klong River 38 Sr 0.75             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989
MacKenzie River   87Sr/86Sr 0.711             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
MacKenzie River 38 Sr 2             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Macibini Eucrites 38 Sr 77           µg/g Trace element compositional data on Macibini Eucrite. Mittlefehldt 2004 McCarthy et al. 1973
Buchanan et al. 2000b
Maas River   87Sr/86Sr 0.7085             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989
Maas River 38 Sr 2.506             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989
Luzon Basalt   87Sr/86Sr 0.70442         4   Average major and trace element values for Luzon Arc Basalts given in weight percent and parts per million respectively. Kelemen et al. 2004
Luzon Basalt 38 Sr 566.18         11 ppm Average major and trace element values for Luzon Arc Basalts given in weight percent and parts per million respectively. Kelemen et al. 2004
Lower Continental Crust   Eu/Sr 0.0032             Major and minor element composition of the Lower Crust of the Earth with selected trace element ratios as given by Rudnick and Gao 2004. Kemp & Hawkesworth 2004 Rudnick & Gao 2004
Lower Continental Crust   Rb/Sr 0.03             Major and minor element composition of the Lower Crust of the Earth with selected trace element ratios as given by Rudnick and Gao 2004. Kemp & Hawkesworth 2004 Rudnick & Gao 2004
Lower Continental Crust   Rb/Sr 0.033             Rudnick & Fountain 1995
Lower Continental Crust 38 Sr 317           ppm Based on the mean values of estimates of the regional abundances of high metamorphic grade Precambrian rock types ad divided by SiO2 contents into ultrabasis, basic, intermediate and silica-rich (see Table 3). Shaw et al. 1986
Lower Continental Crust 38 Sr 348           ppm Rudnick & Fountain 1995
Lower Continental Crust 38 Sr 230           ppm Taylor & McLennan 1995
Lower Continental Crust 38 Sr 352           ppm LCC = Rudnick & Presper (1990) in the proportions of Figure 2. Wedepohl 1995
Lower Continental Crust 38 Sr 348           µg/g Recommended composition of the Lower Continental crust as given by various sources. Major element oxides are given in wt.% and trace element concentrations are given in either ng/g or ¿g/g. Rudnick & Gao 2004 Rudnick & Fountain 1995
Lower Continental Crust 38 Sr 230           µg/g Major and trace element compositional estimates of the lower continental crust as given by Taylor and McLennan 1985, 1995 using average lower crustal abundances. Major element oxides are given in wt.% and trace elements in either ng/g or ¿g/g. Rudnick & Gao 2004 Taylor & McLennan 1985
Taylor & McLennan 1995
Lower Continental Crust 38 Sr 308           µg/g Major and trace element compositional estimates of the lower continental crust as given by Gao et al. 1998a using seismic velocities and granulite data from the North China craton. Major element oxides are given in wt.% and trace elements in either ng/g or ¿g/g. Rudnick & Gao 2004 Gao et al. 1998a
Lower Continental Crust 38 Sr 352           µg/g Major and trace element compositional estimates of the lower continental crust as given by Wedepohl 1995 using lower crust in Western Europe derived from siesmic data and granulite xenolith composition. Major element oxides are given in wt.% and trace elements in either ng/g or ¿g/g. Rudnick & Gao 2004 Wedepohl 1995
Lower Continental Crust 38 Sr 348           µg/g Major and trace element compositional estimates of the lower continental crust as given by Rudnick and Fountain 1995 using global average seismic velocities and granulites. Major element oxides are given in wt.% and trace elements in either ng/g or ¿g/g. Rudnick & Gao 2004 Rudnick & Fountain 1995
Lower Continental Crust 38 Sr 196           µg/g Major and trace element compositional estimates of the lower continental crust as given by Rudnick and Taylor 1987 using lower crustal xenoliths from the McBride Province, Queensland, Australia. Major element oxides are given in wt.% and trace elements in either ng/g or ¿g/g. Rudnick & Gao 2004 Rudnick & Taylor 1987
Lower Continental Crust 38 Sr 447           µg/g Major and trace element compositional estimates of the lower continental crust as given by Shaw et al. 1994 using Kapuskasing Structural Zone granulites. Major element oxides are given in wt.% and trace elements in either ng/g or ¿g/g. Rudnick & Gao 2004 Shaw et al. 1994
Lower Continental Crust 38 Sr 569           µg/g Major and trace element compositional estimates of the lower continental crust as given by Weaver and Tarney 1984 using Scourian granulites from Scotland. Major element oxides are given in wt.% and trace elements in either ng/g or ¿g/g. Rudnick & Gao 2004 Weaver & Tarney 1984
Lower Continental Crust 38 Sr 354           µg/g Major and trace element compositional estimates of the lower continental crust as given by Rudnick and Presper 1990 using median worldwide lower crustal xenoliths. Major element oxides are given in wt.% and trace elements in either ng/g or ¿g/g. Rudnick & Gao 2004 Rudnick & Presper 1990
Lower Continental Crust 38 Sr 712           µg/g Major and trace element compositional estimates of the lower continental crust as given by Liu et al. 2001 using lower crustal xenoliths from Hannuoba, North China Craton. Major element oxides are given in wt.% and trace elements in either ng/g or ¿g/g. Rudnick & Gao 2004 Liu et al. 2001
Lower Continental Crust 38 Sr 286           µg/g Major and trace element compositional estimates of the lower continental crust as given by Villaseca et al. 1999 using lithologic proportions of lover crustal xenoliths from Central Spain. Major element oxides are given in wt.% and trace elements in either ng/g or ¿g/g. Rudnick & Gao 2004 Villaseca et al. 1999
Lower Continental Crust 38 Sr 518           µg/g Major and trace element compositional estimates of the lower continental crust as given by Condie and Selverstone 1999 using lower crustal xenoliths from the four corners region, Colorado Plateu, USA. Major element oxides are given in wt.% and trace elements in either ng/g or ¿g/g. Rudnick & Gao 2004 Condie & Selverstone 1999
Lower Continental Crust 38 Sr 348           ppm Major and minor element composition of the Lower Crust of the Earth with selected trace element ratios as given by Rudnick and Gao 2004. Kemp & Hawkesworth 2004 Rudnick & Gao 2004
Lower Continental Crust 38 Sr 425           ppm Present day Lower Continental Crust composition as given in Taylor & McLennan 1981. Values are used as one of many models of Lower Continental crustal composition to which other such analyses are compared. Shaw et al. 1986 Taylor & McLennan 1981
Lower Continental Crust   Sr/Nd 30             Rudnick & Fountain 1995
Lower Continental Crust   Sr/Nd 31.63             Major and minor element composition of the Lower Crust of the Earth with selected trace element ratios as given by Rudnick and Gao 2004. Kemp & Hawkesworth 2004 Rudnick & Gao 2004
Lesser Antilles Basalt   87Sr/86Sr 0.70482         46   Average major and trace element values for Lesser Antilles Arc Basalts given in weight percent and parts per million respectively. Kelemen et al. 2004
Lesser Antilles Basalt 38 Sr 314.97         57 ppm Average major and trace element values for Lesser Antilles Arc Basalts given in weight percent and parts per million respectively. Kelemen et al. 2004
Late Proterozoic Upper Crust   Ba/Sr 2.4             Map model. Concentrations are directly calculated from rock proportions scaled from geologic maps and stratigraphic successions as summarized in Table 2. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Late Proterozoic Upper Crust   Ba/Sr 2.5             Restoration model. Concentrations are calculated after restoration of the amount of crust lost be erosion, in particular, important when estimating the composition of juvenile continental crust. The restoration is performed based on geologic maps and stratigraphic successions as summarized in Table 2. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Late Proterozoic Upper Crust   Rb/Sr 0.36             Restoration model. Concentrations are calculated after restoration of the amount of crust lost be erosion, in particular, important when estimating the composition of juvenile continental crust. The restoration is performed based on geologic maps and stratigraphic successions as summarized in Table 2. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Late Proterozoic Upper Crust   Rb/Sr 0.33             Map model. Concentrations are directly calculated from rock proportions scaled from geologic maps and stratigraphic successions as summarized in Table 2. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Late Proterozoic Upper Crust 38 Sr 288           ppm Map model. Concentrations are directly calculated from rock proportions scaled from geologic maps and stratigraphic successions as summarized in Table 2. Condie 1993
Late Proterozoic Upper Crust 38 Sr 281           ppm Restoration model. Concentrations are calculated after restoration of the amount of crust lost be erosion, in particular, important when estimating the composition of juvenile continental crust. The restoration is performed based on geologic maps and stratigraphic successions as summarized in Table 2. Condie 1993
Late Archean Upper Crust   Ba/Sr 1.9             Map model. Concentrations are directly calculated from rock proportions scaled from geologic maps and stratigraphic successions as summarized in Table 2. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Late Archean Upper Crust   Ba/Sr 2             Restoration model. Concentrations are calculated after restoration of the amount of crust lost be erosion, in particular, important when estimating the composition of juvenile continental crust. The restoration is performed based on geologic maps and stratigraphic successions as summarized in Table 2. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Late Archean Upper Crust   Rb/Sr 0.28             Restoration model. Concentrations are calculated after restoration of the amount of crust lost be erosion, in particular, important when estimating the composition of juvenile continental crust. The restoration is performed based on geologic maps and stratigraphic successions as summarized in Table 2. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Late Archean Upper Crust   Rb/Sr 0.24             Map model. Concentrations are directly calculated from rock proportions scaled from geologic maps and stratigraphic successions as summarized in Table 2. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Late Archean Upper Crust 38 Sr 267           ppm Restoration model. Concentrations are calculated after restoration of the amount of crust lost be erosion, in particular, important when estimating the composition of juvenile continental crust. The restoration is performed based on geologic maps and stratigraphic successions as summarized in Table 2. Condie 1993
Late Archean Upper Crust 38 Sr 300           ppm Map model. Concentrations are directly calculated from rock proportions scaled from geologic maps and stratigraphic successions as summarized in Table 2. Condie 1993
La Grande River   87Sr/86Sr 0.7346             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
La Grande River 38 Sr 0.137             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
La Caja Formation 38 Sr 1010         8 ppm Gray, calcareous, pelletal phosphorites in a sequence of offshore cherty and silty limestones of the Mexican geosyncline, La Caja Formation in Concepcion del Oro of the Zacatecas province, Mexico. Detection Limit = 2 ppm. Altschuller 1980 Rogers et al. 1956
Kyzyl Kum 38 Sr 70         5 ppm Phosphatic sandstones and shales, near shore deltaic and littoral sediments of Kyzyl Kum, Uzbekistan, P2O5: >10%. Detection Limit = 2 ppm. Altschuller 1980 Kapustyanski 1964
Kuskokwim River   87Sr/86Sr 0.709             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989
Kuskokwim River 38 Sr 1.603             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989
Kuriles Trench   87Sr/86Sr 0.71121             Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 2 or high. Plank & Langmuir 1998
Kuriles Trench 38 Sr 87           ppm Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 2 or high. Plank & Langmuir 1998
Komatiites 38 Sr 11           ppm Condie 1993
Koksoak River   87Sr/86Sr 0.7301             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Koksoak River 38 Sr 0.171             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Kimberlite   87Sr/86Sr       0.704 0.7043 2   Average major and trace element composition and selected isotopic ratio data for Koidu Kimberlites from Sierra Leone. Farmer 2004 Taylor et al. 1994
Kimberlite 38 Sr 601         22 ppm Average major and trace element composition and selected isotopic ratio data for Koidu Kimberlites from Sierra Leone. Farmer 2004 Taylor et al. 1994
Kermadec Basalts   87Sr/86Sr 0.70419         19   Average major and trace element values for Kermadec Arc Basalts given in weight percent and parts per million respectively. Kelemen et al. 2004
Kermadec Basalts 38 Sr 274.9         10 ppm Average major and trace element values for Kermadec Arc Basalts given in weight percent and parts per million respectively. Kelemen et al. 2004
Kerm Trench   87Sr/86Sr 0.70799             Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 4 or low. Plank & Langmuir 1998
Kerm Trench 38 Sr 222           ppm Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 4 or low. Plank & Langmuir 1998
Kenya   87Sr/86Sr 0.7114             Estimated 87Sr/86Sr ratios normalized to a value of 0.7080. Precision is of no importance in measurements here due to the seasonal variation which causes concentration values to fluxuate. Palmer & Edmond 1989
Kenya 38 Sr 1.1             Estimated Sr concentrations derived from fluvial Ca data due to the precipitation of Sr with calcium carbonates in the sea. Sr concentrations were determined using standard mass spectrometric techniques. Palmer & Edmond 1989
Kazan River   87Sr/86Sr 0.7258             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Kazan River 38 Sr 0.263             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Karatau 38 Sr 790         10 ppm Dark, granular and oolitic phosphorites, cherty and dolomitic, in a sequence of black shales and dolomites of the Lesser Karatau geosyncline, Karatau, Kazakhstan U.S.S.R.  Averages of 5-10 specimens except for Cr, Mo and Li: P2O5 = 26-32%Detection Limit = 2 ppm. Altschuller 1980 Kholodov 1963
Kamchatka Trench   87Sr/86Sr 0.71121             Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 3 or moderate. Plank & Langmuir 1998
Kamchatka Trench 38 Sr 38           ppm Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 3 or moderate. Plank & Langmuir 1998
Kamchatka Basalt   87Sr/86Sr 0.70344         28   Average major and trace element values for Kamchatka Arc Basalts given in weight percent and parts per million respectively. Kelemen et al. 2004
Kamchatka Basalt 38 Sr 345.68         41 ppm Average major and trace element values for Kamchatka Arc Basalts given in weight percent and parts per million respectively. Kelemen et al. 2004
Juba River   87Sr/86Sr 0.7061             Estimated 87Sr/86Sr ratios normalized to a value of 0.7080. Precision is of no importance in measurements here due to the seasonal variation which causes concentration values to fluxuate. Palmer & Edmond 1989
Juba River 38 Sr 1.5             Estimated Sr concentrations derived from fluvial Ca data due to the precipitation of Sr with calcium carbonates in the sea. Sr concentrations were determined using standard mass spectrometric techniques. Palmer & Edmond 1989
Java Trench   87Sr/86Sr 0.71682             Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 1 or highest. Plank & Langmuir 1998
Java Trench 38 Sr 218           ppm Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 1 or highest. Plank & Langmuir 1998
Japan Trench   87Sr/86Sr 0.71121             Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 2 or high. Plank & Langmuir 1998
Japan Trench 38 Sr 87           ppm Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 2 or high. Plank & Langmuir 1998
Japan   87Sr/86Sr 0.7076             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Goldstein & Jacobsen 1987
Japan 38 Sr 0.63             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Goldstein & Jacobsen 1987
Izu-Bonin Trench   87Sr/86Sr 0.70617             Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 4 or low. Plank & Langmuir 1998
Izu-Bonin Trench 38 Sr 110           ppm Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 4 or low. Plank & Langmuir 1998
Island Arcs   Rb/Sr 0.16         323   Analysis of Continental Arc Granite from the Peninsula Range Batholith represented in major and minor element abundances as well as slected trace element ratios given by Martin 1995 but plotted in Figure 5 of Kemp & Hawkesworth 2004. Kemp & Hawkesworth 2004 Silver & Chappell 1998
Island Arcs 38 Sr 400           ppm Taylor & McLennan 1995
Island Arcs 38 Sr 375         323 ppm Analysis of Continental Arc Granite from the Peninsula Range Batholith represented in major and minor element abundances as well as slected trace element ratios given by Martin 1995 but plotted in Figure 5 of Kemp & Hawkesworth 2004. Kemp & Hawkesworth 2004 Silver & Chappell 1998
Island Arcs   Sr/Nd 26.78         323   Analysis of Continental Arc Granite from the Peninsula Range Batholith represented in major and minor element abundances as well as slected trace element ratios given by Martin 1995 but plotted in Figure 5 of Kemp & Hawkesworth 2004. Kemp & Hawkesworth 2004 Silver & Chappell 1998
Island Arc Andesite   87Sr/86Sr 0.70493         14   Average major and trace element values from Primitive Oceanic Arc Andesites given by Kelemen et al. 2004. All major element oxide values are given in wt. % and trace elements in ppm. Kelemen et al. 2004
Island Arc Andesite   87Sr/86Sr 0.70389         141   Average major and trace element values for Average Oceanic Arc Basalt given in weight percent and parts per million respectively. Kelemen et al. 2004
Island Arc Andesite 38 Sr 306.74         181 ppm Average major and trace element values for Average Oceanic Arc Basalt given in weight percent and parts per million respectively. Kelemen et al. 2004
Island Arc Andesite 38 Sr 358.8         25 ppm Average major and trace element values from Primitive Oceanic Arc Andesites given by Kelemen et al. 2004. All major element oxide values are given in wt. % and trace elements in ppm. Kelemen et al. 2004
Irrawady River   87Sr/86Sr 0.7102             Estimated 87Sr/86Sr ratios normalized to a value of 0.7080. Precision is of no importance in measurements here due to the seasonal variation which causes concentration values to fluxuate. Palmer & Edmond 1989
Irrawady River 38 Sr 3.393             Estimated Sr concentrations derived from fluvial Ca data due to the precipitation of Sr with calcium carbonates in the sea. Sr concentrations were determined using standard mass spectrometric techniques. Palmer & Edmond 1989
Intermediate Precambrian Granulites 38 Sr 550         26 ppm Shaw et al. 1986
Intermediate Mafic Post-Archean Granulites 38 Sr 408 346       126 ppm Median values are used instead of average values in the model calculations to avoid outlyers of small sample populations. Rudnick & Fountain 1995
Intermediate Mafic Granulitic Xenolites 38 Sr 549 435       41 ppm Median values are used instead of average values in the model calculations to avoid outlyers of small sample populations. Rudnick & Fountain 1995
Intermediate Mafic Archean Granulites 38 Sr 519 454       100 ppm Median values are used instead of average values in the model calculations to avoid outlyers of small sample populations. Rudnick & Fountain 1995
Intermediate Granulites 38 Sr 484         136 ppm Average of 115 subsamples and 21 composites. Gao et al. 1998
Interlayered Clay & Chert 38 Sr 200         12 ppm This interval is estimated to be 25% chert based on core descriptions. Average clay from 30-58 m depth is diluted with 25% chert at 100% Si. Average of 12 cherts and clays using DCP analyses. Plank & Langmuir 1998
Interlayered Chert & Limestone   87Sr/86Sr 0.71055         5   Average of 5 chert and limestone analyses. Due to the poor recovery of these notoriously hard chert beds, this chert section may be overdiluted by silica causing an underestimation of the geochemical abundances. The dilution factors have therefore been based on the down-core logging for SiO2 contents. The logging data was also used to determine the average CaO as calcium carbonate to dilute all elements (except Sr) accordingly. Plank & Langmuir 1998
Interlayered Chert & Limestone 38 Sr 265         5 ppm Average of 5 chert and limestone analyses. Due to the poor recovery of these notoriously hard chert beds, this chert section may be overdiluted by silica causing an underestimation of the geochemical abundances. The dilution factors have therefore been based on the down-core logging for SiO2 contents. The logging data was also used to determine the average CaO as calcium carbonate to dilute all elements (except Sr) accordingly. Plank & Langmuir 1998
Interlayerd Clay & Chert   87Sr/86Sr 0.71297         2   Bottom 65 m of a total section that is 335 m thick (Site 581) dominated by interlayered clay and chert. Plank & Langmuir 1998
Interlayerd Clay & Chert 38 Sr 22         2 ppm Bottom 65 m of a total section that is 335 m thick (Site 581) dominated by interlayered clay and chert. Plank & Langmuir 1998
Interior North China Craton 38 Sr 381           ppm Compostional estimate of the interior of the North China craton. Average compostion of granulite terrains. Gao et al. 1998
Interior North China Craton 38 Sr 336           ppm Compostional estimate of the interior of the North China craton. Average compostion of granulite terrains and calculated on a sedimentary carbonate rock-free basis. Gao et al. 1998
Interior North China Craton 38 Sr 267           ppm Compostional estimate of the interior of the North China craton. Includes sedimentary carbonates. Gao et al. 1998
Interior North China Craton 38 Sr 267           ppm Compostional estimate of the interior of the North China craton. Calculated on a sedimentary carbonate rock-free basis. Gao et al. 1998
Interior North China Craton 38 Sr 398           ppm Compostional estimate of the interior of the North China craton. Gao et al. 1998
Indus River   87Sr/86Sr 0.7112             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Goldstein & Jacobsen 1987
Indus River 38 Sr 3.33             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Goldstein & Jacobsen 1987
Indonesia   87Sr/86Sr 0.7083             Estimated 87Sr/86Sr ratios normalized to a value of 0.7080. Precision is of no importance in measurements here due to the seasonal variation which causes concentration values to fluxuate. Palmer & Edmond 1989
Indonesia 38 Sr 0.3             Estimated Sr concentrations derived from fluvial Ca data due to the precipitation of Sr with calcium carbonates in the sea. Sr concentrations were determined using standard mass spectrometric techniques. Palmer & Edmond 1989
Ibitira Eucrite 38 Sr 81           µg/g Trace element compositional data on Ibitira Eucrite. Mittlefehldt 2004 Jarosewich 1990
Barrat et al. 2000
Hydrothermal Vents   87Sr/86Sr 0.7035             Global content of isotopic strontium at hydrothermally active areas. Low strontium content is indicative of mobilisation related to the water/rock ratio in the reaction zones and seawater passing thru the anhydrite precipitation zone. Palmer & Edmond 1989
Hydrothermal Vents 38 Sr 126             Global content of strontium at hydrothermally active areas. Sr levels from vent fluids are linearly correlated with Ca and Cl which is indicative of control of Sr by chloro-complexing along with Sr precipitation in sloid solution in secondary Ca minerals (Epidote). Palmer & Edmond 1989
Hydrothermal Sediment 38 Sr 822         4 ppm Average of 4 hydrothermal sediments or clays using DCP analyses. Plank & Langmuir 1998
Hudson River   87Sr/86Sr 0.7118             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989
Hudson River 38 Sr 1.454             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989
Honshu Basalt   87Sr/86Sr 0.70437         27   Average major and trace element values for Honshu Arc Basalts given in weight percent and parts per million respectively. Kelemen et al. 2004
Honshu Basalt 38 Sr 715.2         38 ppm Average major and trace element values for Honshu Arc Basalts given in weight percent and parts per million respectively. Kelemen et al. 2004
Hayes River   87Sr/86Sr 0.7177             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Hayes River 38 Sr 0.411             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Havero Urelite 38 Sr 0.7           µg/g Trace element compositional data on Havero Urelite. Mittlefehldt 2004 Wanke et al. 1972
Greywackes 38 Sr 201           ppm Total average of group averages from USA, Canada, Australia, Sri Lanka and Germany using an equal statistical weight. Wedepohl 1995
Green Clay   87Sr/86Sr 0.70595         3   Silty clay (37.5%), clay (50%) and nannofossil ooze (12.5%) make up this section. Two analyses have been made for silty clay and the clay lithologies, whereas the ooze is assumed to contain 56% CaO, 44% CO2 and 1000 ppm Sr. Plank & Langmuir 1998
Green Clay 38 Sr 266         3 ppm Silty clay (37.5%), clay (50%) and nannofossil ooze (12.5%) make up this section. Two analyses have been made for silty clay and the clay lithologies, whereas the ooze is assumed to contain 56% CaO, 44% CO2 and 1000 ppm Sr. Plank & Langmuir 1998
Greater Antilles Basalt   87Sr/86Sr 0.70432         1   Average major and trace element values for Greater Antilles Arc Basalts given in weight percent and parts per million respectively. Kelemen et al. 2004
Greater Antilles Basalt 38 Sr 284.6         16 ppm Average major and trace element values for Greater Antilles Arc Basalts given in weight percent and parts per million respectively. Kelemen et al. 2004
Graywackes 38 Sr 280           ppm Condie 1993
Graywackes 38 Sr 280           ppm Condie 1993
Graywackes 38 Sr 265           ppm Condie 1993
Graywackes 38 Sr 290           ppm Condie 1993
Graywackes 38 Sr 220           ppm Condie 1993
Graywackes 38 Sr 240           ppm Condie 1993
Granulitic Xenolites   Rb/Sr 0.078 0.014       237   Average of granulite facies xenoliths. Rudnick & Presper 1990
Granulitic Xenolites 38 Sr 422 338       290 ppm Average of granulite facies xenoliths. Rudnick & Presper 1990
Granulites   Rb/Sr 0.48 0.12       597   Average of granulite facies terrains. Rudnick & Presper 1990
Granulites   Rb/Sr 0.89 0.14       478   Average of granulite facies terrains. Rudnick & Presper 1990
Granulites   Rb/Sr 0.019             Lower crust composition based on the estimates of Weaver and Tarney 1982. The lower crust itself was found to have the composition of Archaean Lewisian granulite facies gneiss. Weaver & Tarney 1984 Weaver & Tarney 1982
Granulites 38 Sr 569           ppm Lower crust composition based on the estimates of Weaver and Tarney 1982. The lower crust itself was found to have the composition of Archaean Lewisian granulite facies gneiss. Weaver & Tarney 1984 Weaver & Tarney 1982
Granulites 38 Sr 285 212       524 ppm Average of granulite facies terrains. Rudnick & Presper 1990
Granulites 38 Sr 324 257       638 ppm Average of granulite facies terrains. Rudnick & Presper 1990
Granites   Eu/Sr 0.0032             Analysis of Archean Calc-Alkaline Type 1 & 2 Granite represented in major and minor element abundances as well as slected trace element ratios given by Martin 1995 but plotted in Figure 5 of Kemp & Hawkesworth 2004. Kemp & Hawkesworth 2004 Sylvester 1995
Granites   Eu/Sr 0.0039         8   Analysis of Glenelg River Complex Leucogranite represented in major and minor element abundances as well as slected trace element ratios given by Martin 1995 but plotted in Figure 5 of Kemp & Hawkesworth 2004. Kemp & Hawkesworth 2004 Kemp 2001
Granites   Rb/Sr 0.44         8   Analysis of Glenelg River Complex Leucogranite represented in major and minor element abundances as well as slected trace element ratios given by Martin 1995 but plotted in Figure 5 of Kemp & Hawkesworth 2004. Kemp & Hawkesworth 2004 Kemp 2001
Granites   Rb/Sr 0.24             Analysis of Archean Calc-Alkaline Type 1 & 2 Granite represented in major and minor element abundances as well as slected trace element ratios given by Martin 1995 but plotted in Figure 5 of Kemp & Hawkesworth 2004. Kemp & Hawkesworth 2004 Sylvester 1995
Granites 38 Sr 479           ppm Analysis of Archean Calc-Alkaline Type 1 & 2 Granite represented in major and minor element abundances as well as slected trace element ratios given by Martin 1995 but plotted in Figure 5 of Kemp & Hawkesworth 2004. Kemp & Hawkesworth 2004 Sylvester 1995
Granites 38 Sr 283.1         8 ppm Analysis of Glenelg River Complex Leucogranite represented in major and minor element abundances as well as slected trace element ratios given by Martin 1995 but plotted in Figure 5 of Kemp & Hawkesworth 2004. Kemp & Hawkesworth 2004 Kemp 2001
Granites 38 Sr 335         1226 ppm Average of 1140 subsamples and 86 composites. Gao et al. 1998
Granites 38 Sr 236         402 ppm Average of 369 subsamples and 33 composites. Gao et al. 1998
Granites 38 Sr 120           ppm Condie 1993
Granites 38 Sr 145           ppm Condie 1993
Granites 38 Sr 122           ppm Condie 1993
Granites   Sr/Nd 10.64             Analysis of Archean Calc-Alkaline Type 1 & 2 Granite represented in major and minor element abundances as well as slected trace element ratios given by Martin 1995 but plotted in Figure 5 of Kemp & Hawkesworth 2004. Kemp & Hawkesworth 2004 Sylvester 1995
Granites   Sr/Nd 38.31         8   Analysis of Glenelg River Complex Leucogranite represented in major and minor element abundances as well as slected trace element ratios given by Martin 1995 but plotted in Figure 5 of Kemp & Hawkesworth 2004. Kemp & Hawkesworth 2004 Kemp 2001
Garonne River Particulates 38 Sr 164           µg/g Elemental particulates in major European rivers. Averages for major elements are weighted according to the suspended load prior to the construction of dams, for trace elements the average contents are mean values. Martin & Meybeck 1979
Garonne River   87Sr/86Sr 0.7106             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Albarede & Michard 1987
Garonne River 38 Sr 1.267             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Albarede & Michard 1987
Garnet Peridotites 38 Sr   29         ppm McDonough 1991 Maaloe & Aoki 1975
Jordan 1979
Boyd 1989
McDonough 1990
Ganges River   87Sr/86Sr 0.7257             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989
Ganges River 38 Sr 1.581             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989
Fresh MORB in Indian Ocean   87Sr/86Sr 0.7035             Analyses on MORB glasses from the Indian Ocean as given by Klein et al. 1991. Klein 2004 Klein et al. 1991
Fresh MORB in Indian Ocean 38 Sr 191           ppm Analyses on MORB glasses from the Indian Ocean as given by Klein et al. 1991. Klein 2004 Klein et al. 1991
Fresh Mid-Ocean Ridge Basalts   87Sr/86Sr 0.7027             Isotopic compositions of Depleted Mantle (DM) according to Strontium isotopic values from the 'All MORB' data compilation.  To achieve an average isotopic composition of the Depleted Mantle the PetDB database was utilized. All eruptive products from mid-ocean spreading centers were compiled and filtered to include only samples that were erupted in water depths in excess of 2000 m.  All samples that contained more than 55 wt.% SiO2 were excluded as well. Samples with non-smooth REE patterns were excluded wherever applicable.  With these minimal steps of filtering, this ensures that at least part of the plume influenced basalts are excluded.    Salters & Stracke 2004
Fresh Mid-Ocean Ridge Basalts   87Sr/86Sr 0.70274         104   Average major and trace element values for Primitive MORB given in weight percent and parts per million respectively. Kelemen et al. 2004
Fresh Mid-Ocean Ridge Basalts 38 Sr 141.42         55 ppm Average major and trace element values for Primitive MORB given in weight percent and parts per million respectively. Kelemen et al. 2004
Fresh Mid-Ocean Ridge Basalts   Sr/Nd 11.88             Constant' ratios in MORB as taken from the 'All MORB' data set according to Salters and Stracke 2003.  The 'All MORB' data set is a compilation of 639 sample ratios to represent the MORB composition.  In using these values and applying a simple mathematical process order to remove the outliers, which are found by calculating the upper and lower quartile range, then applying the outlier criterion (explained in Salters and Stracke 2003 pg.7).  In addition to this method all the samples with La > 5 ppm were rejected.  This, much like with the tests and criteria of the D-MORB values, is a method of removing low degree melts from the MORB data in order to come closer to a value for Depleted Mantle.  Salters & Stracke 2004
Fraser River   87Sr/86Sr 0.712             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Fraser River 38 Sr 0.913             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Frankfort Howardites 38 Sr 24           µg/g Trace element compositional data on Frankfort Howardite. Mittlefehldt 2004 McCarthy et al. 1972
Palme et al. 1978
Ferruginous Clay   87Sr/86Sr 0.71639         2   The proportions of the Fe-rich and carbonate-rich clays are roughly equal based on barrel sheet descriptions. One analysis of each rock type is simply averaged. Plank & Langmuir 1998
Ferruginous Clay 38 Sr 211         2 ppm The proportions of the Fe-rich and carbonate-rich clays are roughly equal based on barrel sheet descriptions. One analysis of each rock type is simply averaged. Plank & Langmuir 1998
Felsic Volcanics 38 Sr 150           ppm Condie 1993
Felsic Volcanics 38 Sr 170           ppm Condie 1993
Felsic Volcanics 38 Sr 150           ppm Condie 1993
Felsic Volcanics 38 Sr 125           ppm Condie 1993
Felsic Volcanics 38 Sr 136           ppm Condie 1993
Felsic Volcanics 38 Sr 111           ppm Condie 1993
Felsic Volcanics 38 Sr 201         972 ppm Average of 895 subsamples and 77 composites. Gao et al. 1998
Felsic Volcanics 38 Sr 160           ppm Condie 1993
Felsic Post-Archean Granulites 38 Sr 222 185       215 ppm Median values are used instead of average values in the model calculations to avoid outlyers of small sample populations. Rudnick & Fountain 1995
Felsic Granulites 38 Sr 416         137 ppm Average of 116 subsamples and 21 composites. Gao et al. 1998
Felsic Archean Granulites 38 Sr 285 257       353 ppm Median values are used instead of average values in the model calculations to avoid outlyers of small sample populations. Rudnick & Fountain 1995
Extreme Depleted D-MORB basalts   87Sr/86Sr 0.702             Isotopic compositions of Depleted Mantle (DM) according to Strontium isotopes in the 'Extreme' present day MORB.  'Extreme' merely refers to the fact that these isotopic compositions are from the most depleted end of the MORB field. These average MORB compositions are calculated using a more restrictive set of filters in order to assure that MORB representing low degree melts or melts which have experienced large amounts of fractional crystallization do not affect the average.  Though degree of melting or fractional crystallization do not effect the average isotopic composition, for incompatible trace element ratios to reflect source compositions only high degree melts should be used.  These will be known as 'D-MORB' for Depleted Mid-Ocean Ridge Basalts.  It is also noted that the values of the 'Average' and 'Extreme' D-MORB are very similar. Salters & Stracke 2004
Estherville Mesosiderite 38 Sr 96           µg/g Trace element compositional data on Estherville Mesosiderite. Mittlefehldt 2004 Mittlefehldt in press
Simpson & Ahrens 1977
Enriched-Depleted MORB Mantle   87Sr/86Sr 0.70307             Strontium isotopic ratios of Enriched Depleted MORB Mantle which is based off isotopes that are 2s enriched over the average MORB value. Workman & Hart 2005
Enriched-Depleted MORB Mantle   Rb/Sr 0.0111             Rubidium/Strontium ratio of Enriched Depleted MORB Mantle which is based off ratios that are 2s enriched over the average MORB value. Present-day parent daughter ratios, calculated with a continuous depletion model starting 3 Ga. Workman & Hart 2005
Enriched-Depleted MORB Mantle   Rb/Sr 0.0111             Rubidium/Strontium ratio of Enriched Depleted MORB Mantle which is based off ratios that are 2s enriched over the average MORB value. Present-day parent daughter ratios, calculated with a continuous depletion model starting 3 Ga. Workman & Hart 2005
Enriched-Depleted MORB Mantle 38 Sr 9.718           ppm Trace element composition of EDMM (Enriched Depleted MORB Mantle) in ppm. Workman & Hart 2005
Elbe River   87Sr/86Sr 0.7097             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989
Elbe River 38 Sr 6.532             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989
Eel River   87Sr/86Sr 0.7064             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Brass 1976
Eel River 38 Sr 3.689             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Brass 1976
Eastmain River   87Sr/86Sr 0.7285             Strontium isotopic content of major world rivers. All values obtained using standard mass specrometric techniques and used to determine global runoff of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
Eastmain River 38 Sr 0.068             Strontium content of major world rivers as measured in micromoles per kilogram. All values obtained using standard mass specrometric techniques and used to determine riverine flux of strontium. Palmer & Edmond 1989 Wadleigh et al. 1985
East Sunda Trench   87Sr/86Sr 0.71682             Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 1 or highest. Plank & Langmuir 1998
East Sunda Trench 38 Sr 405           ppm Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 1 or highest. Plank & Langmuir 1998
East China Craton 38 Sr 298           ppm Compostional estimate of East China. Assuming that the lowermost crust is represented by the average worldwide mafic granulite xenolith (Rudnick & Fountain, 1995). Gao et al. 1998
East China Craton 38 Sr 284           ppm Compostional estimate of East China. Assuming that the lowermost crust is represented by the average mafic granulite from Archean high-grade terrains in Central East China (Appendix 1). Gao et al. 1998
Early Proterozoic Upper Crust   Ba/Sr 2.5             Restoration model. Concentrations are calculated after restoration of the amount of crust lost be erosion, in particular, important when estimating the composition of juvenile continental crust. The restoration is performed based on geologic maps and stratigraphic successions as summarized in Table 2. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Early Proterozoic Upper Crust   Ba/Sr 2.4             Map model. Concentrations are directly calculated from rock proportions scaled from geologic maps and stratigraphic successions as summarized in Table 2. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Early Proterozoic Upper Crust   Rb/Sr 0.32             Map model. Concentrations are directly calculated from rock proportions scaled from geologic maps and stratigraphic successions as summarized in Table 2. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Early Proterozoic Upper Crust   Rb/Sr 0.36             Restoration model. Concentrations are calculated after restoration of the amount of crust lost be erosion, in particular, important when estimating the composition of juvenile continental crust. The restoration is performed based on geologic maps and stratigraphic successions as summarized in Table 2. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Early Proterozoic Upper Crust 38 Sr 280           ppm Restoration model. Concentrations are calculated after restoration of the amount of crust lost be erosion, in particular, important when estimating the composition of juvenile continental crust. The restoration is performed based on geologic maps and stratigraphic successions as summarized in Table 2. Condie 1993
Early Proterozoic Upper Crust 38 Sr 287           ppm Map model. Concentrations are directly calculated from rock proportions scaled from geologic maps and stratigraphic successions as summarized in Table 2. Condie 1993
Early Archean Upper Crust   Ba/Sr 2             Map model. Concentrations are directly calculated from rock proportions scaled from geologic maps and stratigraphic successions as summarized in Table 2. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Early Archean Upper Crust   Ba/Sr 2.1             Restoration model. Concentrations are calculated after restoration of the amount of crust lost be erosion, in particular, important when estimating the composition of juvenile continental crust. The restoration is performed based on geologic maps and stratigraphic successions as summarized in Table 2. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Early Archean Upper Crust   Rb/Sr 0.25             Map model. Concentrations are directly calculated from rock proportions scaled from geologic maps and stratigraphic successions as summarized in Table 2. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Early Archean Upper Crust   Rb/Sr 0.28             Restoration model. Concentrations are calculated after restoration of the amount of crust lost be erosion, in particular, important when estimating the composition of juvenile continental crust. The restoration is performed based on geologic maps and stratigraphic successions as summarized in Table 2. Ratios calculated from weighted arithmetic means of rock types given in Appendix A-H. Condie 1993
Early Archean Upper Crust 38 Sr 251           ppm Restoration model. Concentrations are calculated after restoration of the amount of crust lost be erosion, in particular, important when estimating the composition of juvenile continental crust. The restoration is performed based on geologic maps and stratigraphic successions as summarized in Table 2. Condie 1993
Early Archean Upper Crust 38 Sr 287           ppm Map model. Concentrations are directly calculated from rock proportions scaled from geologic maps and stratigraphic successions as summarized in Table 2. Condie 1993
E-MORB   87Sr/86Sr 0.70392             Compositie analyses on E-MORB glasses from the Mid-Atlantic Ridge as reported in the RidgePetDB database. Major and most trace elements for this E-type MORB are taken from the sample EW19309-004-002. Klein 2004 Lehnert 2000
E-MORB 38 Sr 181           ppm Compositie analyses on E-MORB glasses from the Mid-Atlantic Ridge as reported in the RidgePetDB database. Major and most trace elements for this E-type MORB are taken from the sample EW19309-004-002. Klein 2004 Lehnert 2000
Dvina River   87Sr/86Sr 0.7084             Estimated 87Sr/86Sr ratios normalized to a value of 0.7080. Precision is of no importance in measurements here due to the seasonal variation which causes concentration values to fluxuate. Palmer & Edmond 1989
Dvina River 38 Sr 2.5             Estimated Sr concentrations derived from fluvial Ca data due to the precipitation of Sr with calcium carbonates in the sea. Sr concentrations were determined using standard mass spectrometric techniques. Palmer & Edmond 1989
DSDP/ODP Site 801   87Sr/86Sr 0.70617             Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 1 or highest. Plank & Langmuir 1998
DSDP/ODP Site 801   87Sr/86Sr 0.7062             Isotopic estimates of Bulk Marianas sediment derived from several different sources of analysis based upon DSDP Hole 801. Elliot et al. 1997
DSDP/ODP Site 801 38 Sr 140           ppm Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 1 or highest. Plank & Langmuir 1998
DSDP/ODP Site 801 38 Sr 140           ppm Compositional estimates of Bulk Marianas sediment as observed from the sediment column of DSDP Hole 801. Values derived according to methods given in Plank and Ludden 1992. Elliot et al. 1997
DSDP/ODP Site 800   87Sr/86Sr 0.7081             Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 1 or highest. Plank & Langmuir 1998
DSDP/ODP Site 800 38 Sr 183           ppm Bulk composition estimate of sediments approaching the trench based on DSDP and ODP drill sites. Confidence level = 1 or highest. Plank & Langmuir 1998
Dover Sandstone 38 Sr 650         4 ppm Phosphatic pebbles and cements from nearshore, quartzose sandstones and siltstones of the mid-Paleozoic platform: Neptune Range (Dover Sandstones in the Pensacola Mountains, Antarctica). P2O5 = greater than 26%. Detection Limit = 2 ppm. Altschuller 1980 Cathcart & Schmidt 1974
Don River   87Sr/86Sr 0.7084             Estimated 87Sr/86Sr ratios normalized to a value of 0.7080. Precision is of no importance in measurements here due to the seasonal variation which causes concentration values to fluxuate. Palmer & Edmond 1989
Don River 38 Sr 2.5             Estimated Sr concentrations derived from fluvial Ca data due to the precipitation of Sr with calcium carbonates in the sea. Sr concentrations were determined using standard mass spectrometric techniques. Palmer & Edmond 1989
Dniepr River   87Sr/86Sr 0.7084             Estimated 87Sr/86Sr ratios normalized to a value of 0.7080. Precision is of no importance in measurements here due to the seasonal variation which causes concentration values to fluxuate. Palmer & Edmond 1989
Dniepr River 38 Sr 2.5             Estimated Sr concentrations derived from fluvial Ca data due to the precipitation of Sr with calcium carbonates in the sea. Sr concentrations were determined using standard mass spectrometric techniques. Palmer & Edmond 1989
Diorite 38 Sr 610         260 ppm Average of 243 subsamples and 17 composites. Gao et al. 1998
Diatome Ooze   87Sr/86Sr 0.70595         4   This ash-rich diatom ooze contains 50% diatoms and 7% ash particles. The individual analyses therefore have been diluted with 65% SiO2 based on an average 75% SiO2 in the diatoms. The analyses were further enriched by adding an average Aleutian andesite (Plank & Langmuir, 1988) to represent the ash layers in this section. Plank & Langmuir 1998
Diatome Ooze 38 Sr 249         4 ppm This ash-rich diatom ooze contains 50% diatoms and 7% ash particles. The individual analyses therefore have been diluted with 65% SiO2 based on an average 75% SiO2 in the diatoms. The analyses were further enriched by adding an average Aleutian andesite (Plank & Langmuir, 1988) to represent the ash layers in this section. Plank & Langmuir 1998
Diatome Mud   87Sr/86Sr 0.70763         6   Based on smear slides an average of 35% biogenic opal (SiO2) has been estimated, which is consistent with 17 wt% biogenic opal estimated from shipboard logs. The 6 analyses have simply been averaged since the SiO2 content is consistently ~57%. Plank & Langmuir 1998
Diatome Mud 38 Sr 336         6 ppm Based on smear slides an average of 35% biogenic opal (SiO2) has been estimated, which is consistent with 17 wt% biogenic opal estimated from shipboard logs. The 6 analyses have simply been averaged since the SiO2 content is consistently ~57%. Plank & Langmuir 1998
Diatome Clay   87Sr/86Sr 0.71057         6   Upper 240 m of a total section that is 335 m thick (Site 581) dominated by diatom clay. Plank & Langmuir 1998
Diatome Clay 38 Sr 115         6 ppm Upper 240 m of a total section that is 335 m thick (Site 581) dominated by diatom clay. Plank & Langmuir 1998
Diatom Oozes & Clay   87Sr/86Sr 0.709189         15   Weighted average based on DCP analyses for 200 m of diatom oozes. Plank & Langmuir 1998
Diatom Oozes & Clay 38 Sr 115         15 ppm Weighted average based on DCP analyses for 200 m of diatom oozes. Plank & Langmuir 1998
Depleted-Depleted MORB Mantle   87Sr/86Sr 0.70219             Strontium isotopic ratios of Depleted Depleted MORB Mantle which is based off isotopes that are 2s depleted from the average MORB value. Workman & Hart 2005
Depleted-Depleted MORB Mantle   Rb/Sr 0.0033             Rubidium/Strontium ratio of Depleted Depleted MORB Mantle which is based off ratios that are 2s depleted from the average MORB value. Present-day parent daughter ratios, calculated with a continuous depletion model starting 3 Ga. Workman & Hart 2005
Depleted-Depleted MORB Mantle 38 Sr 6.092           ppm Trace element composition of DDMM (Depleted Depleted MORB Mantle) in ppm. Workman & Hart 2005
Depleted MORB Mantle   87Sr/86Sr 0.70263             Average Strontium Isotopic compositions taken from Depleted MORB Mantle Su & Langmuir 2003. Workman & Hart 2005 Su & Langmuir 2003
Depleted MORB Mantle   Rb/Sr 0.0065             Present-day parent daughter ratios of Depleted MORB Mantle (DMM), calculated with a continuous depletion model starting 3 Ga. Workman & Hart 2005
Depleted Mantle   87Rb/86Sr 0.022             Present day depleted mantle trace elements are 10% of N-MORB abundances. Isotopic composition of the depleted mantle was chosen to lie near the depleted end of the Atlantic-Pacific MORB array. Parent/daughter ratios of the isotopic systems were calculated from the listed trace element and isotope data. Rehkamper & Hofmann 1997
Depleted Mantle   87Sr/86Sr 0.7025             Present day depleted mantle trace elements are 10% of N-MORB abundances. Isotopic composition of the depleted mantle was chosen to lie near the depleted end of the Atlantic-Pacific MORB array. Parent/daughter ratios of the isotopic systems were calculated from the listed trace element and isotope data. Rehkamper & Hofmann 1997
Depleted Mantle 38 Sr 7.664     6.462 8.709   ppm Trace element composition of DMM (Depleted MORB Mantle) with minimum and maximum estimates based on assuming initiation of continuous depletion at 2.5Ga (min) and 3.5Ga (max). Workman & Hart 2005
Depleted Mantle 38 Sr 11.3           ppm Present day depleted mantle trace elements are 10% of N-MORB abundances. Isotopic composition of the depleted mantle was chosen to lie near the depleted end of the Atlantic-Pacific MORB array. Parent/daughter ratios of the isotopic systems were calculated from the listed trace element and isotope data. Units of trace elements assumed to be in PPM. Rehkamper & Hofmann 1997
Depleted Mantle 38 Sr 9.8   1.862       ppm Estimate for the concentrations in the Depleted Mantle of most of the elements of the Periodic Table.  Sr/Nd is the element ratio/constraint used to make this estimate. Salters & Stracke 2004
Depleted D-MORB basalts   87Sr/86Sr 0.7026