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)
Seawater 68 Er 5e-06             Broeker & Peng 1982
Seawater 68 Er 0.0008           ppb Li 1982
Rivers 68 Er 0.004           ppb Li 1982 Martin & Meybeck 1979
Continental Intraplate Xenoliths 68 Er 0.0053           ppm Pearson et al. 2004 Ionov 1996
Continental Intraplate Xenoliths 68 Er 0.007           ppm Pearson et al. 2004 Eggins et al. 1998
Continental Intraplate Xenoliths 68 Er 0.009           ppm Pearson et al. 2004 Bedini & Bodinier 1999
Continental Intraplate Xenoliths 68 Er 0.024           ppm Pearson et al. 2004 Eggins et al. 1998
Cratonic Xenoliths 68 Er 0.032           ppm Pearson et al. 2004
Continental Intraplate Xenoliths 68 Er 0.04           ppm Pearson et al. 2004 Ionov 1996
Cratonic Xenoliths 68 Er 0.05           ppm Pearson et al. 2004 Gregoire et al. 2002
Continental Intraplate Xenoliths 68 Er 0.059           ppm Pearson et al. 2004 Ionov et al. 1997
Chassigny Meteorite 68 Er 0.09           ppm McSween, Jr. 2004 Lodders 1998
Cratonic Xenoliths 68 Er 0.12           ppm Pearson et al. 2004 Gregoire et al. 2002
Continental Intraplate Xenoliths 68 Er 0.137           ppm Pearson et al. 2004 Eggins et al. 1998
Cratonic Xenoliths 68 Er 0.143           ppm Pearson et al. 2004
Continental Intraplate Xenoliths 68 Er 0.148           ppm Pearson et al. 2004 Bedini & Bodinier 1999
CI Chondrites 68 Er 0.1589           ppm Palme & Jones 2004 Anders & Grevesse 1989
Cratonic Xenoliths 68 Er 0.163           ppm Pearson et al. 2004
CI Chondrites 68 Er 0.166           ppm McDonough & Frey 1989 Palme et al. 1981
Anders & Ebihara 1982
Beer et al. 1984
Jochum et al. 1986
CI Chondrites 68 Er 0.166   0.0083       ppm Palme & Jones 2004 Palme & Beer 1993
Cratonic Xenoliths 68 Er 0.2           ppm Pearson et al. 2004 Stachel et al. 1998
ALH 84001 Meteorite 68 Er 0.21           ppm McSween, Jr. 2004 Lodders 1998
Solar System 68 Er 0.23             Anders & Ebihara 1982 Cameron 1982
Cratonic Xenoliths 68 Er 0.235           ppm Pearson et al. 2004
CI Chondrites 68 Er 0.236           ppm McDonough et al. 1992
Talkeetna Arc Plutonic Rocks 68 Er 0.236   0.011     16 ppm Kelemen et al. 2004
Solar System 68 Er 0.2508   0.00326     4   Anders & Grevesse 1989
Solar System 68 Er 0.253             Anders & Ebihara 1982
REE Fractionated CAI Inclusions 68 Er 0.26     0.15 0.43 5 ppm Martin & Mason 1974
Allende Meteorite 68 Er 0.29           wt%ox Martin & Mason 1974
Solid Earth 68 Er 0.3           µg/g McDonough 1998
Solid Earth 68 Er 0.3           ppm McDonough 2004
Spinel Peridotites 68 Er 0.3 0.28 0.22     52 ppm McDonough 1990
Depleted-Depleted MORB Mantle 68 Er 0.329           ppm Workman & Hart 2005
Silicate Earth 68 Er 0.347           ppm McDonough et al. 1992 Taylor & McLennan 1985
Depleted Mantle 68 Er 0.348     0.334 0.359   ppm Workman & Hart 2005
Continental Intraplate Xenoliths 68 Er 0.358           ppm Pearson et al. 2004 Ionov 1996
Enriched-Depleted MORB Mantle 68 Er 0.369           ppm Workman & Hart 2005
Nakhla Meteorite 68 Er 0.37   0.05       ppm McSween, Jr. 2004 Lodders 1998
Depleted Mantle 68 Er 0.371   0.0371       ppm Salters & Stracke 2004
Primitive Mantle 68 Er 0.374           ppm McDonough & Frey 1989 Taylor & McLennan 1985
Primitive Mantle 68 Er 0.41           ppm McDonough & Frey 1989 Hart & Zindler 1986
Primitive Mantle 68 Er 0.4167           ppm Hofmann 1988 Hart & Zindler 1986
Silicate Earth 68 Er 0.4167           ppm McDonough et al. 1992 Hofmann 1988
Silicate Earth 68 Er 0.44           ppm McDonough 2004
Silicate Earth 68 Er 0.44           µg/g McDonough 1998
Continental Intraplate Xenoliths 68 Er 0.46           ppm Pearson et al. 2004 Ionov et al. 1997
Primitive Mantle 68 Er 0.46           ppm McDonough & Frey 1989 Wanke et al. 1984
Silicate Earth 68 Er 0.46           ppm McDonough et al. 1992 Jagoutz et al. 1979
Wanke et al. 1984
Olivine Chondrules 68 Er 0.47     0.38 0.6 3 ppm Martin & Mason 1974
Primitive Mantle 68 Er 0.473           ppm McDonough & Frey 1989 McDonough & Sun 1989
Silicate Earth 68 Er 0.479           ppm McDonough et al. 1992 Sun 1982
Sun & McDonough 1989
McDonough & Frey 1989
Primitive Mantle 68 Er 0.49           ppm McDonough & Frey 1989 Sun 1982
Tonalites-Trondhjemites-Granodiorites 68 Er 0.59         355 ppm Kemp & Hawkesworth 2004 Martin 1995
ALH 77005 Meteorite 68 Er 0.66           ppm McSween, Jr. 2004 Lodders 1998
Cratonic Xenoliths 68 Er 0.68           ppm Pearson et al. 2004 Gergoire et al. 2002
Boninites 68 Er 0.7         55 ppm Kelemen et al. 2004
Continental Intraplate Xenoliths 68 Er 0.79           ppm Pearson et al. 2004 Glaser et al. 1999
Oceans Surface water 68 Er 0.8           ng/kg Quinby-Hunt & Turekian 1983 Elderfield & Greaves 1982
Oceans Deep water 68 Er 0.83           ng/kg Quinby-Hunt & Turekian 1983 Elderfield & Greaves 1982
Seawater 68 Er 0.9           ng/kg Quinby-Hunt & Turekian 1983 Elderfield & Greaves 1982
Cratonic Xenoliths 68 Er 0.924           ppm Pearson et al. 2004
Solar Photosphere 68 Er 0.93   0.06         Anders & Grevesse 1989
Solar Photosphere 68 Er 0.93   0.06         Palme & Jones 2004 Grevesse & Sauval 1998
CI Chondrites 68 Er 0.96   0.02         Palme & Jones 2004
Interlayered Chert & Limestone 68 Er 0.96         5 ppm Plank & Langmuir 1998
Core 68 Er 0           µg/g McDonough 1998
Radiolarites 68 Er 1           ppm Elliot et al. 1997
Talkeetna Arc Plutonic Rocks 68 Er 1.02   0.025     31 ppm Kelemen et al. 2004
Radiolarites 68 Er 1.03         4 ppm Plank & Langmuir 1998
Continental Intraplate Xenoliths 68 Er 1.11           ppm Pearson et al. 2004 Eggins et al. 1998
Seawater 68 Er 1.3             Li 1991 Whitfield & Turner 1987
Nano Ooze 68 Er 1.33         4 ppm Plank & Langmuir 1998
Aleutian Basalts 68 Er 1.36         11 ppm Kelemen et al. 2004
Orangeite 68 Er 1.36         114 ppm Farmer 2004 Mitchell 1995
Chert 68 Er 1.38         4 ppm Plank & Langmuir 1998
Oceanic Plateaus 68 Er 1.38           ppm Kerr 2004 Kerr et al. 1996
Chert 68 Er 1.4           ppm Elliot et al. 1997
Volcanoclastic Turbidites 68 Er 1.4           ppm Elliot et al. 1997
Volcanoclastic Turbidites 68 Er 1.41         13 ppm Plank & Langmuir 1998
Oceanic Plateaus 68 Er 1.43           ppm Kerr 2004 Aitken & Echeverria 1984
Dupre & Echeverria 1984
Jochum et al. 1991
Oceanic Plateaus 68 Er 1.44           ppm Kerr 2004
Oceanic Plateaus 68 Er 1.44           ppm Kerr 2004 Kerr et al. 2002
Basalts 68 Er 1.47         10 ppm Farmer 2004 Chung et al. 2001
Diatom Oozes & Clay 68 Er 1.47         15 ppm Plank & Langmuir 1998
South Sandwich Trench 68 Er 1.47           ppm Plank & Langmuir 1998
Carbonate Turbidites 68 Er 1.6         87 ppm Plank & Langmuir 1998
Volcanoclastic Turbidites 68 Er 1.6         43 ppm Plank & Langmuir 1998
Luzon Basalt 68 Er 1.62         8 ppm Kelemen et al. 2004
Continental Arc Andesite 68 Er 1.63         22 ppm Kelemen et al. 2004
New Hebrides Islands 68 Er 1.65         21 ppm Kelemen et al. 2004
Lesser Antilles Basalt 68 Er 1.69         43 ppm Kelemen et al. 2004
Protolith Gabbros at ODP Site 735 68 Er 1.69         8 ppm Hart et al. 1999
Radiolarites 68 Er 1.7         17 ppm Plank & Langmuir 1998
Talkeetna Arc Plutonic Rocks 68 Er 1.716   0.232     6 ppm Kelemen et al. 2004
Nankai Trench 68 Er 1.75           ppm Plank & Langmuir 1998
Pelagic Clay 68 Er 1.75         55 ppm Plank & Langmuir 1998
Andesites 68 Er 1.77         7 ppm Kelemen et al. 2004
Cascade Basalt 68 Er 1.79         5 ppm Kelemen et al. 2004
Archean Terrains 68 Er 1.8           ppm Rudnick & Fountain 1995
Carbonate 68 Er 1.8         13 ppm Plank & Langmuir 1998
Granites 68 Er 1.8         8 ppm Kemp & Hawkesworth 2004 Kemp 2001
Intermediate Mafic Granulitic Xenolites 68 Er 1.8 1.5       10 ppm Rudnick & Fountain 1995
Basalts 68 Er 1.84         27 ppm Farmer 2004 Farmer et al. 2002
Mafic Granulitic Xenolites 68 Er 1.84 1.68       41 ppm Rudnick & Fountain 1995
Turbidites 68 Er 1.85         4 ppm Plank & Langmuir 1998
Talkeetna Arc Plutonic Rocks 68 Er 1.861   0.146     7 ppm Kelemen et al. 2004
Central American Basalts 68 Er 1.88         29 ppm Kelemen et al. 2004
Shergotty Meteorite 68 Er 1.88   0.02       ppm McSween, Jr. 2004 Lodders 1998
Oceanic Plateaus 68 Er 1.89           ppm Kerr 2004 Hauff et al. 2000
Continental Arcs 68 Er 1.9           ppm Rudnick & Fountain 1995
Continental Shields & Platforms 68 Er 1.9           ppm Rudnick & Fountain 1995
Lower Continental Crust 68 Er 1.9           ppm Kemp & Hawkesworth 2004 Rudnick & Gao 2004
Lower Continental Crust 68 Er 1.9           µg/g Rudnick & Gao 2004 Rudnick & Fountain 1995
Lower Continental Crust 68 Er 1.9           ppm Rudnick & Fountain 1995
Lower Continental Crust 68 Er 1.9           µg/g Rudnick & Gao 2004 Rudnick & Fountain 1995
Rifted Continental Margins 68 Er 1.9           ppm Rudnick & Fountain 1995
Tonalites 68 Er 1.9           ppm Wedepohl 1995
Kamchatka Trench 68 Er 1.91           ppm Plank & Langmuir 1998
Zeolite Clay 68 Er 1.92         3 ppm Plank & Langmuir 1998
Andaman Trench 68 Er 1.93           ppm Plank & Langmuir 1998
Continental Arc Andesite 68 Er 1.95         84 ppm Kelemen et al. 2004
Continental Intraplate Xenoliths 68 Er 1.97           ppm Pearson et al. 2004 Gregoire et al. 2002
Chert 68 Er 1.98         4 ppm Plank & Langmuir 1998
Goalpara Ureilite 68 Er 10   1       ppb Boynton et al. 1976
Continental Intraplate Xenoliths 68 Er 11.4           ppm Pearson et al. 2004 Bedini & Bodinier 1999
Moore County Eucrite 68 Er 1100           ng/g Mittlefehldt 2004 Barrat et al. 2000
McCarthy et al. 1973
Pelagic Clay 68 Er 14.8           ppm Elliot et al. 1997
Pelagic Clay 68 Er 14.8         6 ppm Plank & Langmuir 1998
Johnstown Diogenite 68 Er 140           ng/g Mittlefehldt 2004 Wanke et al. 1977
CI Chondrites 68 Er 158.9   2.07     4 ppb Anders & Grevesse 1989
CI Chondrites 68 Er 160           ppb McDonough & Sun 1995 Wasson & Kallemeyn 1988
CI Chondrites 68 Er 160   7.36     6 ppb Anders & Ebihara 1982 Evensen et al. 1978
CI Chondrites 68 Er 160           ppb McDonough & Sun 1995
Orgueil Chondrite 68 Er 160         4 ppb Anders & Ebihara 1982
Orgueil Chondrite 68 Er 162         6 ppb Anders & Grevesse 1989
CI Chondrites 68 Er 166           ppb McDonough & Sun 1995 Palme 1988
CI Chondrites 68 Er 166   8.3       ppb Palme & O'Neill 2004 Palme & Jones 2004
Interlayered Clay & Chert 68 Er 17.46         12 ppm Plank & Langmuir 1998
Ibitira Eucrite 68 Er 1730           ng/g Mittlefehldt 2004 Jarosewich 1990
Barrat et al. 2000
Havero Urelite 68 Er 18           ng/g Mittlefehldt 2004 Wanke et al. 1972
Manganese Nodules 68 Er 18           ppm Li 1991 Baturin 1988
Haynes et al. 1986
Sioux County Eucrite 68 Er 1830           ng/g Mittlefehldt 2004 Barrat et al. 2000
McCarthy et al. 1973
Felsic Archean Granulites 68 Er 2 0.84       55 ppm Rudnick & Fountain 1995
Island Arc Andesite 68 Er 2         136 ppm Kelemen et al. 2004
Lower Continental Crust 68 Er 2           µg/g Rudnick & Gao 2004 Rudnick & Presper 1990
Nanno Ooze 68 Er 2         2 ppm Plank & Langmuir 1998
Kamchatka Basalt 68 Er 2.02         24 ppm Kelemen et al. 2004
Central America Trench 68 Er 2.07           ppm Plank & Langmuir 1998
Basalts 68 Er 2.08         4 ppm Farmer 2004 Chung 1999
Active Continental Rifts 68 Er 2.1           ppm Rudnick & Fountain 1995
Archean Terrains 68 Er 2.1           ppm Taylor & McLennan 1995
Basalts 68 Er 2.1         5 ppm Farmer 2004 Wilson et al. 1997
Continental Arcs 68 Er 2.1           ppm Rudnick & Fountain 1995
Continental Crust 68 Er 2.1           ppm Wedepohl 1995
Continental Crust 68 Er 2.1           µg/g Rudnick & Gao 2004 Rudnick & Fountain 1995
Continental Crust 68 Er 2.1           µg/g Rudnick & Gao 2004 Wedepohl 1995
Continental Crust 68 Er 2.1           µg/g Rudnick & Gao 2004
Continental Crust 68 Er 2.1           ppm Kemp & Hawkesworth 2004 Rudnick & Gao 2004
Continental Shields & Platforms 68 Er 2.1           ppm Rudnick & Fountain 1995
DSDP/ODP Site 801 68 Er 2.1           ppm Elliot et al. 1997
DSDP/ODP Site 801 68 Er 2.1           ppm Plank & Langmuir 1998
Intermediate Mafic Archean Granulites 68 Er 2.1 1.6       24 ppm Rudnick & Fountain 1995
Paleozoic Orogens 68 Er 2.1           ppm Rudnick & Fountain 1995
Andesites 68 Er 2.11         50 ppm Plank & Langmuir 1998 Plank & Langmuir 1988
Marianas Trench 68 Er 2.12           ppm Plank & Langmuir 1998
Alaska Trench 68 Er 2.13           ppm Plank & Langmuir 1998
DSDP/ODP Site 800 68 Er 2.13           ppm Plank & Langmuir 1998
Turbidites 68 Er 2.13         4 ppm Plank & Langmuir 1998
Andes Basalt 68 Er 2.14         10 ppm Kelemen et al. 2004
Continental Intraplate Xenoliths 68 Er 2.14           ppm Pearson et al. 2004 Eggins et al. 1998
Continental Intraplate Xenoliths 68 Er 2.15           ppm Pearson et al. 2004 Johnson et al. 1996
Greater Antilles Basalt 68 Er 2.15         6 ppm Kelemen et al. 2004
Oceanic Plateaus 68 Er 2.18           ppm Kerr 2004 Aitken & Echeverria 1984
Dupre & Echeverria 1984
Jochum et al. 1991
Continental Intraplate Xenoliths 68 Er 2.19           ppm Pearson et al. 2004 Bedini & Bodinier 1999
Active Continental Rifts 68 Er 2.2           ppm Rudnick & Fountain 1995
Archean Terrains 68 Er 2.2           ppm Taylor & McLennan 1995
Continental Crust 68 Er 2.2           µg/g Rudnick & Gao 2004 Taylor & McLennan 1985
Taylor & McLennan 1995
Continental Crust 68 Er 2.2           ppm Rudnick & Fountain 1995
Continental Crust 68 Er 2.2           ppm Taylor & McLennan 1995
Greywackes 68 Er 2.2           ppm Wedepohl 1995
Intermediate Mafic Post-Archean Granulites 68 Er 2.2 1.95       10 ppm Rudnick & Fountain 1995
Lower Continental Crust 68 Er 2.2           ppm Taylor & McLennan 1995
Lower Continental Crust 68 Er 2.2           µg/g Rudnick & Gao 2004 Taylor & McLennan 1985
Taylor & McLennan 1995
Mesozoic & Cenozoic Extensions 68 Er 2.2           ppm Rudnick & Fountain 1995
Mesozoic & Cenozoic Orogens 68 Er 2.2           ppm Rudnick & Fountain 1995
Rifted Continental Margins 68 Er 2.2           ppm Rudnick & Fountain 1995
Tongan Basalts 68 Er 2.2         6 ppm Kelemen et al. 2004
Granulitic Xenolites 68 Er 2.22 1.76       56 ppm Rudnick & Presper 1990
Basalts 68 Er 2.27         13 ppm Farmer 2004 Robert et al. 1992
Basalts 68 Er 2.28         3 ppm Farmer 2004 Wilson et al. 1997
Island Arcs 68 Er 2.3           ppm Taylor & McLennan 1995
Mesozoic & Cenozoic Orogens 68 Er 2.3           ppm Rudnick & Fountain 1995
Middle Continental Crust 68 Er 2.3           ppm Kemp & Hawkesworth 2004 Rudnick & Gao 2004
Middle Continental Crust 68 Er 2.3           µg/g Rudnick & Gao 2004
Middle Continental Crust 68 Er 2.3           µg/g Rudnick & Gao 2004 Rudnick & Fountain 1995
Middle Continental Crust 68 Er 2.3           ppm Rudnick & Fountain 1995
N-MORB 68 Er 2.3           ppm Klein 2004 Lehnert 2000
Paleozoic Orogens 68 Er 2.3           ppm Rudnick & Fountain 1995
Sumatra Trench 68 Er 2.3           ppm Plank & Langmuir 1998
Upper Continental Crust 68 Er 2.3           ppm Taylor & McLennan 1995
Upper Continental Crust 68 Er 2.3           µg/g Rudnick & Gao 2004 see text








Upper Continental Crust 68 Er 2.3           µg/g Rudnick & Gao 2004
Upper Continental Crust 68 Er 2.3           µg/g Rudnick & Gao 2004 Taylor & McLennan 1985
Taylor & McLennan 1995
Upper Continental Crust 68 Er 2.3           ppm Kemp & Hawkesworth 2004 Rudnick & Gao 2004
Upper Continental Crust 68 Er 2.3           ppm Taylor et al. 1983 Taylor & McLennan 1981
Colombia Trench 68 Er 2.33           ppm Plank & Langmuir 1998
Scotia Island Basalt 68 Er 2.33         16 ppm Kelemen et al. 2004
Cascadia Trench 68 Er 2.34           ppm Plank & Langmuir 1998
Clastic Turbidites 68 Er 2.34         28 ppm Plank & Langmuir 1998
Green Clay 68 Er 2.34         3 ppm Plank & Langmuir 1998
Vanuatu Trench 68 Er 2.34           ppm Plank & Langmuir 1998
Volcanoclastic Sediment 68 Er 2.34         15 ppm Plank & Langmuir 1998
Basalts 68 Er 2.35         8 ppm Farmer 2004 Marzoli et al. 2000
Marianas Basalt 68 Er 2.38         37 ppm Kelemen et al. 2004
Diatome Clay 68 Er 2.4         6 ppm Plank & Langmuir 1998
Garonne River Particulates 68 Er 2.4           µg/g Martin & Meybeck 1979
Mesozoic & Cenozoic Extensions 68 Er 2.4           ppm Rudnick & Fountain 1995
Basalts 68 Er 2.43         6 ppm Farmer 2004 Marzoli et al. 2000
Peru Trench 68 Er 2.44           ppm Plank & Langmuir 1998
Aleutian Trench 68 Er 2.47           ppm Plank & Langmuir 1998
East Sunda Trench 68 Er 2.49           ppm Plank & Langmuir 1998
Basalts 68 Er 2.5         7 ppm Farmer 2004 Price et al. 1997
Interlayerd Clay & Chert 68 Er 2.5         2 ppm Plank & Langmuir 1998
Mafic Post-Archean Granulites 68 Er 2.5 2.5       6 ppm Rudnick & Fountain 1995
Granulites 68 Er 2.55 2.49       37 ppm Rudnick & Presper 1990
North Antilles Trench 68 Er 2.55           ppm Plank & Langmuir 1998
Fresh MORB in Indian Ocean 68 Er 2.56           ppm Klein 2004 Klein et al. 1991
N-MORB 68 Er 2.57           ppm Klein 2004 Lehnert 2000
Oceanic Plateaus 68 Er 2.57           ppm Kerr 2004 Tejada et al. 2002
Oceanic Plateaus 68 Er 2.6           ppm Kerr 2004 Reynaud et al. 1999
Radiolarian Clay 68 Er 2.61         11 ppm Plank & Langmuir 1998
Basalts 68 Er 2.64         16 ppm Farmer 2004 Jung & Hoernes 2000
Oceanic Plateaus 68 Er 2.64           ppm Kerr 2004 Tejada et al. 1996
Pelagic Clay 68 Er 2.65         56 ppm Plank & Langmuir 1998
Pelagic Clay 68 Er 2.65         56 ppm Plank & Langmuir 1998
Diatome Ooze 68 Er 2.66         4 ppm Plank & Langmuir 1998
Basalts 68 Er 2.7         6 ppm Farmer 2004 Turner et al. 1996a
Marine Pelagic Clay 68 Er 2.7           ppm Li 1982 Piper 1974
Mekong River Particulates 68 Er 2.7           µg/g Martin & Meybeck 1979
N-MORB 68 Er 2.72           ppm Klein 2004 Niu et al. 1999
Silicified Limestone 68 Er 2.74           ppm Plank & Langmuir 1998
Granulites 68 Er 2.75 0.66       114 ppm Rudnick & Presper 1990
ODP/DSDP Site 417/418 68 Er 2.77           ppm Staudigel et al. 1996
Continental Crust 68 Er 2.8           µg/g Rudnick & Gao 2004 Taylor 1964
Melitite-rich Chondrules 68 Er 2.8     1.9 3.8 10 ppm Martin & Mason 1974
Japan Trench 68 Er 2.82           ppm Plank & Langmuir 1998
Kuriles Trench 68 Er 2.82           ppm Plank & Langmuir 1998
E-MORB 68 Er 2.83           ppm Klein 2004 Lehnert 2000
ODP/DSDP Site 417/418 68 Er 2.83           ppm Staudigel et al. 1995
Radiolarian Clay 68 Er 2.88         8 ppm Plank & Langmuir 1998
Radiolarian Clay 68 Er 2.88         8 ppm Plank & Langmuir 1998
Felsic Post-Archean Granulites 68 Er 2.9 2.8       6 ppm Rudnick & Fountain 1995
Oceanic Plateaus 68 Er 2.9           ppm Kerr 2004 Tejada et al. 2002
Diatome Mud 68 Er 2.91         6 ppm Plank & Langmuir 1998
South Antilles Trench 68 Er 2.92           ppm Plank & Langmuir 1998
Subducted Sediment 68 Er 2.92   1.06       ppm Plank & Langmuir 1998
Silty Mud 68 Er 2.98         16 ppm Plank & Langmuir 1998
Tonga Trench 68 Er 20.07           ppm Plank & Langmuir 1998
Continental Crust 68 Er 2200           ppb Palme & O'Neill 2004 Rudnick & Gao 2004
Marine Apatites 68 Er 23.3         13 ppm Altschuller 1980
Ryuku Trench 68 Er 23.67           ppm Plank & Langmuir 1998
Pelagic Clay 68 Er 24.5         6 ppm Plank & Langmuir 1998
Hydrothermal Sediment 68 Er 25938         4 ppm Plank & Langmuir 1998
Y-74450 Eucrites 68 Er 2750           ng/g Mittlefehldt 2004 Wanke et al. 1977
Fresh Mid-Ocean Ridge Basalts 68 Er 3         29 ppm Kelemen et al. 2004
River Particulates 68 Er 3           µg/g Martin & Meybeck 1979
Talkeetna Arc Plutonic Rocks 68 Er 3.094   0.032     42 ppm Kelemen et al. 2004
Izu-Bonin Trench 68 Er 3.15           ppm Plank & Langmuir 1998
Talkeetna Arc Plutonic Rocks 68 Er 3.174   0.138     13 ppm Kelemen et al. 2004
Transitional Mid-Ocean Ridge Basalts 68 Er 3.24           ppm Klein 2004 Lehnert 2000
Basalts 68 Er 3.25         44 ppm Farmer 2004 Baker et al. 1997
Lower Continental Crust 68 Er 3.25           µg/g Rudnick & Gao 2004 Rudnick & Taylor 1987
Java Trench 68 Er 3.35           ppm Plank & Langmuir 1998
Marine Shales 68 Er 3.4           ppm Li 1991 Turekian & Wedepohl 1961
Haskin & Haskin 1966
Australian Granite 68 Er 3.43         6 ppm Kemp & Hawkesworth 2004 Turner et al. 1992
Ferruginous Clay 68 Er 3.53         2 ppm Plank & Langmuir 1998
Continental Intraplate Xenoliths 68 Er 3.62           ppm Pearson et al. 2004 Ionov 1996
Marine Shales 68 Er 3.8         36 ppm Altschuller 1980 Hermann 1970
Phanerozoic Flood Basalts 68 Er 3.99         36 ppm Farmer 2004 Hooper & Hawkesworth 1993
Stannern Eucrite 68 Er 3000           ng/g Mittlefehldt 2004 Barrat et al. 2000
McCarthy et al. 1973
Binda Eucrite 68 Er 356           ng/g Mittlefehldt 2004 Barrat et al. 2000
McCarthy et al. 1973
Novo-Urei Ureilite 68 Er 38   4       ppb Boynton et al. 1976
Metalliferous Clay 68 Er 38.45         12 ppm Plank & Langmuir 1998
Makran Trench 68 Er 4.03           ppm Plank & Langmuir 1998
North Atlantic Ocean Surface Water 68 Er 4.07             Bruland 1983 Elderfield & Greaves 1983
N-MORB 68 Er 4.143   1.421     26 ppm Hofmann 1988 Jochum et al. 1988
Ashy Clay 68 Er 4.3         4 ppm Plank & Langmuir 1998
Mafic Archean Granulites 68 Er 4.3 2.2       13 ppm Rudnick & Fountain 1995
Mexico Trench 68 Er 4.39           ppm Plank & Langmuir 1998
Metapelitic Granulitic Xenolites 68 Er 4.5 2.9       12 ppm Rudnick & Fountain 1995
Pelagic Clay 68 Er 4.64         8 ppm Plank & Langmuir 1998
Primitive Mantle 68 Er 438   43.8       ppb McDonough & Sun 1995
Silicate Earth 68 Er 438   43.8       ppb McDonough & Sun 1995
Serra De Mage Eucrite 68 Er 461           ng/g Mittlefehldt 2004 Barrat et al. 2000
McCarthy et al. 1973
Primitive Mantle 68 Er 465   46.5       ppb Palme & O'Neill 2004
Primitive Mantle 68 Er 465           ppb Palme & O'Neill 2004
Central East China Craton   Er/Ag 49             Gao et al. 1998
Seawater 68 Er 5     4.1 5.8     Bruland 1983
North Atlantic Ocean Deep Water 68 Er 5.09             Bruland 1983 Elderfield & Greaves 1983
Radiolarian Clay 68 Er 5.5         2 ppm Plank & Langmuir 1998
REE Unfractionated CAI Inclusions 68 Er 5.5     4.9 6 2 ppm Martin & Mason 1974
North Pacific Ocean Deep Water 68 Er 5.8             Bruland 1983 Masuda & Ikeuchi 1979
Central East China Craton   Er/Ag 50.5             Gao et al. 1998
Central East China Craton   Er/Ag 51.4             Gao et al. 1998
Central East China Craton   Er/Ag 52.1             Gao et al. 1998
Central East China Craton   Er/Ag 53.5             Gao et al. 1998
Central East China Craton   Er/Ag 54.6             Gao et al. 1998
Pelagic Clay 68 Er 6         3 ppm Plank & Langmuir 1998
Brown Clay 68 Er 6.77         29 ppm Plank & Langmuir 1998
Philip Trench 68 Er 6.9           ppm Plank & Langmuir 1998
Frankfort Howardites 68 Er 640           ng/g Mittlefehldt 2004 McCarthy et al. 1972
Palme et al. 1978
Central East China Craton   Er/Ag 65.7             Gao et al. 1998
Brown Clay 68 Er 7.13         4 ppm Plank & Langmuir 1998
Marine Pelagic Clay 68 Er 7.2           ppm Li 1991 Turekian & Wedepohl 1961
Rankin & Glasby 1979
Kapoeta Howardites 68 Er 790           ng/g Mittlefehldt 2004 Wanke et al. 1972
Kerm Trench 68 Er 8.55           ppm Plank & Langmuir 1998
Island Arc Andesite 68 Er             ppm Kelemen et al. 2004
Marine Apatites 68 Er       2 70 13 ppm Altschuller 1980
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