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)
Depleted D-MORB basalts 13 Al 3.98           wt% Bulk major element composition of DMM (Depleted MORB Mantle) as averaged from the previous mineral composition measurements and normalized to 100%. Workman & Hart 2005
Depleted D-MORB basalts 20 Ca 3.17           wt% Bulk major element composition of DMM (Depleted MORB Mantle) as averaged from the previous mineral composition measurements and normalized to 100%. Workman & Hart 2005
Depleted D-MORB basalts   CaO/Al2O3 0.8             Bulk major element composition of DMM (Depleted MORB Mantle) as averaged from the previous mineral composition measurements and normalized to 100%. Workman & Hart 2005
Depleted D-MORB basalts 24 Cr 0.57           wt% Bulk major element composition of DMM (Depleted MORB Mantle) as averaged from the previous mineral composition measurements and normalized to 100%. Workman & Hart 2005
Depleted D-MORB basalts 26 Fe 8.18           wt% Bulk major element composition of DMM (Depleted MORB Mantle) as averaged from the previous mineral composition measurements and normalized to 100%. Total Fe as FeO. Workman & Hart 2005
Depleted D-MORB basalts 19 K 0.006           wt% Bulk major element composition of DMM (Depleted MORB Mantle) as averaged from the previous mineral composition measurements and normalized to 100%. P2O5 value calculated by extracting 3% primary N-MORB (shown here) from PUM (Primitive Upper Mantle). Workman & Hart 2005
Depleted D-MORB basalts 12 Mg 89.4             Mg #= Molar ratio of Mg/(Mg+Fe^2+); Mg # of N-MORB uses 90% total FeO as Fe2+. Workman & Hart 2005
Depleted D-MORB basalts 12 Mg 38.73           wt% Bulk major element composition of DMM (Depleted MORB Mantle) as averaged from the previous mineral composition measurements and normalized to 100%. Workman & Hart 2005
Depleted D-MORB basalts 25 Mn 0.13           wt% Bulk major element composition of DMM (Depleted MORB Mantle) as averaged from the previous mineral composition measurements and normalized to 100%. Workman & Hart 2005
Depleted D-MORB basalts 11 Na 0.13           wt% Bulk major element composition of DMM (Depleted MORB Mantle) as averaged from the previous mineral composition measurements and normalized to 100%. Workman & Hart 2005
Depleted D-MORB basalts 11 Na 0.28           wt% Bulk major element composition of DMM (Depleted MORB Mantle) as averaged from the previous mineral composition measurements and normalized to 100%. P2O5 value calculated by extracting 3% primary N-MORB (shown here) from PUM (Primitive Upper Mantle). Workman & Hart 2005
Depleted D-MORB basalts 28 Ni 0.24           wt% Bulk major element composition of DMM (Depleted MORB Mantle) as averaged from the previous mineral composition measurements and normalized to 100%. Workman & Hart 2005
Depleted D-MORB basalts 15 P 0.019           wt% Bulk major element composition of DMM (Depleted MORB Mantle) as averaged from the previous mineral composition measurements and normalized to 100%. P2O5 value calculated by extracting 3% primary N-MORB (shown here) from PUM (Primitive Upper Mantle). Workman & Hart 2005
Depleted D-MORB basalts 14 Si 44.71           wt% Bulk major element composition of DMM (Depleted MORB Mantle) as averaged from the previous mineral composition measurements and normalized to 100%. Workman & Hart 2005
Depleted D-MORB basalts 22 Ti 0.13           wt% Bulk major element composition of DMM (Depleted MORB Mantle) as averaged from the previous mineral composition measurements and normalized to 100%. Workman & Hart 2005
Depleted Mantle 56 Ba 0.563     0.256 0.896   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 58 Ce 0.55     0.451 0.639   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 66 Dy 0.505     0.48 0.525   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 68 Er 0.348     0.334 0.359   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 63 Eu 0.096     0.088 0.102   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 64 Gd 0.358     0.332 0.379   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 72 Hf 0.157     0.142 0.17   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 67 Ho 0.115     0.11 0.119   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 57 La 0.192     0.157 0.222   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 71 Lu 0.058     0.056 0.059   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 41 Nb 0.1485     0.1277 0.1671   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 60 Nd 0.581     0.507 0.644   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 82 Pb 0.018     0.015 0.021   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 59 Pr 0.107     0.091 0.12   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 37 Rb 0.05     0.023 0.079   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 62 Sm 0.239     0.217 0.256   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 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 73 Ta 0.0096     0.0082 0.0108   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 65 Tb 0.07     0.065 0.073   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 90 Th 0.0079     0.0068 0.0089   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 22 Ti 716.3     666.5 756.1   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 92 U 0.0032     0.0027 0.0036   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 39 Y 3.328     3.179 3.445   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 70 Yb 0.365     0.353 0.374   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 40 Zr 5.082     4.465 5.601   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 MORB Mantle   143Nd/144Nd 0.51313             Average Neodymium Isotopic compositions taken from Depleted MORB Mantle Su & Langmuir 2003. Workman & Hart 2005 Su & Langmuir 2003
Depleted MORB Mantle   176Hf/177Hf 0.28326             Average Hafnium Isotopic composition derived by averaging MORB values from Nowell et al., Chauvel and Blichert-Toft and Andres et al.  Workman & Hart 2005 Nowell et al. 1998
Chauvel & Blichert-Toft 2001
Andres et al. 2002
Depleted MORB Mantle   206Pb/204Pb 18.275             Average Lead Isotopic composition taken from Depleted MORB Mantle Su & Langmuir 2003. Workman & Hart 2005 Su & Langmuir 2003
Depleted MORB Mantle   207Pb/204Pb 15.486             Average Lead Isotopic composition taken from Depleted MORB Mantle Su & Langmuir 2003. Workman & Hart 2005 Su & Langmuir 2003
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   Lu/Hf 0.369             Average Lu/Hf ratio for DMM (Depleted MORB Mantle) as calculated by Workman and Hart 2005. Workman & Hart 2005
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 MORB Mantle   Sm/Nd 0.411             Average Sm/Nd ratio for DMM (Depleted MORB Mantle) as calculated by Workman and Hart 2005. Workman & Hart 2005
Depleted MORB Mantle   Th/U 2.5             Average Th/U ratios for DMM (Depleted MORB Mantle) as taken from U-Series disequilibrium studies on MORBs. Workman & Hart 2005 Lundstrom et al. 1999
Sims et al. 2002
Sims et al. 2003
Depleted MORB Mantle   U/Pb 0.172             Average U/Pb ratio for DMM (Depleted MORB Mantle) as calculated by Workman and Hart 2005. Workman & Hart 2005
Depleted MORB Mantle Clinopyroxene 13 Al 7.87           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Cpx. All mineral compositions normalized to 100%. Workman & Hart 2005
Depleted MORB Mantle Clinopyroxene 20 Ca 19.52           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Cpx. All mineral compositions normalized to 100%. Total Fe as FeO. Workman & Hart 2005
Depleted MORB Mantle Clinopyroxene   CaO/Al2O3 2.48             Major element composition of DMM (Depleted MORB Mantle) as measured from Cpx. All mineral compositions normalized to 100%. Total Fe as FeO. Workman & Hart 2005
Depleted MORB Mantle Clinopyroxene 24 Cr 1.2           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Cpx. All mineral compositions normalized to 100%. Total Fe as FeO. Workman & Hart 2005
Depleted MORB Mantle Clinopyroxene 26 Fe 2.94           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Cpx. All mineral compositions normalized to 100%. Total Fe as FeO. Workman & Hart 2005
Depleted MORB Mantle Clinopyroxene 12 Mg 90.8             Mg #= Molar ratio of Mg/(Mg+Fe^2+); Mg # of N-MORB uses 90% total FeO as Fe2+. Workman & Hart 2005
Depleted MORB Mantle Clinopyroxene 12 Mg 16.19           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Cpx. All mineral compositions normalized to 100%. Total Fe as FeO. Workman & Hart 2005
Depleted MORB Mantle Clinopyroxene 25 Mn 0.09           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Cpx. All mineral compositions normalized to 100%. Workman & Hart 2005
Depleted MORB Mantle Clinopyroxene 11 Na 0.89           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Cpx. All mineral compositions normalized to 100%. Total Fe as FeO. Workman & Hart 2005
Depleted MORB Mantle Clinopyroxene 28 Ni 0.06           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Cpx. All mineral compositions normalized to 100%. Total Fe as FeO. Workman & Hart 2005
Depleted MORB Mantle Clinopyroxene 14 Si 50.61           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Cpx. All mineral compositions normalized to 100%. Workman & Hart 2005
Depleted MORB Mantle Clinopyroxene 22 Ti 0.63           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Cpx. All mineral compositions normalized to 100%. Total Fe as FeO. Workman & Hart 2005
Depleted MORB Mantle Olivine 20 Ca 0.05           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Olivine. All mineral compositions normalized to 100%. Workman & Hart 2005
Depleted MORB Mantle Olivine 26 Fe 10.16           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Olivine. Total Fe as FeO. All mineral compositions normalized to 100%. Workman & Hart 2005
Depleted MORB Mantle Olivine 12 Mg 48.59           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Olivine. All mineral compositions normalized to 100%. Workman & Hart 2005
Depleted MORB Mantle Olivine 12 Mg 89.5             Mg #= Molar ratio of Mg/(Mg+Fe^2+); Mg # of N-MORB uses 90% total FeO as Fe2+ Workman & Hart 2005
Depleted MORB Mantle Olivine 25 Mn 0.14           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Olivine. All mineral compositions normalized to 100%. Workman & Hart 2005
Depleted MORB Mantle Olivine 28 Ni 0.36           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Olivine. All mineral compositions normalized to 100%. Workman & Hart 2005
Depleted MORB Mantle Olivine 14 Si 40.7           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Olivine.All mineral compositions normalized to 100%. Workman & Hart 2005
Depleted MORB Mantle Orthopyroxene 13 Al 6.46           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Opx. All mineral compositions normalized to 100%. Workman & Hart 2005
Depleted MORB Mantle Orthopyroxene 20 Ca 2.18           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Opx. All mineral compositions normalized to 100%. Workman & Hart 2005
Depleted MORB Mantle Orthopyroxene   CaO/Al2O3 0.34             Major element composition of DMM (Depleted MORB Mantle) as measured from Opx. All mineral compositions normalized to 100%. Total Fe as FeO. Workman & Hart 2005
Depleted MORB Mantle Orthopyroxene 24 Cr 0.76           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Opx. All mineral compositions normalized to 100%. Workman & Hart 2005
Depleted MORB Mantle Orthopyroxene 26 Fe 6.27           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Opx. All mineral compositions normalized to 100%. Total Fe as FeO. Workman & Hart 2005
Depleted MORB Mantle Orthopyroxene 12 Mg 89.7             Mg #= Molar ratio of Mg/(Mg+Fe^2+); Mg # of N-MORB uses 90% total FeO as Fe2+. Workman & Hart 2005
Depleted MORB Mantle Orthopyroxene 12 Mg 30.55           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Opx. All mineral compositions normalized to 100%. Workman & Hart 2005
Depleted MORB Mantle Orthopyroxene 25 Mn 0.12           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Opx. All mineral compositions normalized to 100%. Workman & Hart 2005
Depleted MORB Mantle Orthopyroxene 11 Na 0.05           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Opx. All mineral compositions normalized to 100%. Workman & Hart 2005
Depleted MORB Mantle Orthopyroxene 28 Ni 0.09           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Opx. All mineral compositions normalized to 100%. Workman & Hart 2005
Depleted MORB Mantle Orthopyroxene 14 Si 53.36           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Opx. All mineral compositions normalized to 100%. Workman & Hart 2005
Depleted MORB Mantle Orthopyroxene 22 Ti 0.16           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Opx. All mineral compositions normalized to 100%. Workman & Hart 2005
Depleted MORB Mantle Spinel 13 Al 57.54           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Spinel. All mineral compositions normalized to 100%. Workman & Hart 2005
Depleted MORB Mantle Spinel 24 Cr 10.23           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Spinel. All mineral compositions normalized to 100%. Workman & Hart 2005
Depleted MORB Mantle Spinel 24 Cr 10.7             Cr#= molar ratio of Cr/(Cr+Al) Workman & Hart 2005
Depleted MORB Mantle Spinel 26 Fe 12.56           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Spinel. All mineral compositions normalized to 100%. Total Fe as FeO. Workman & Hart 2005
Depleted MORB Mantle Spinel 12 Mg 73.2             Mg #= Molar ratio of Mg/(Mg+Fe^2+); Mg # of N-MORB uses 90% total FeO as Fe2+. Workman & Hart 2005
Depleted MORB Mantle Spinel 12 Mg 19.27           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Spinel. All mineral compositions normalized to 100%. Workman & Hart 2005
Depleted MORB Mantle Spinel 25 Mn 0.16           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Spinel. All mineral compositions normalized to 100%. Workman & Hart 2005
Depleted MORB Mantle Spinel 28 Ni 0.24           wt% Major element composition of DMM (Depleted MORB Mantle) as measured from Spinel. All mineral compositions normalized to 100%. Workman & Hart 2005
Depleted-Depleted MORB Mantle   143Nd/144Nd 0.51326             Neodymium 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   176Hf/177Hf 0.2835             Hafnium 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   206Pb/204Pb 17.573             Lead 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   207Pb/204Pb 15.404             Lead 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   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 56 Ba 0.227           ppm Trace element composition of DDMM (Depleted Depleted MORB Mantle) in ppm. Workman & Hart 2005
Depleted-Depleted MORB Mantle 58 Ce 0.421           ppm Trace element composition of DDMM (Depleted Depleted MORB Mantle) in ppm. Workman & Hart 2005
Depleted-Depleted MORB Mantle 66 Dy 0.471           ppm Trace element composition of DDMM (Depleted Depleted MORB Mantle) in ppm. Workman & Hart 2005
Depleted-Depleted MORB Mantle 68 Er 0.329           ppm Trace element composition of DDMM (Depleted Depleted MORB Mantle) in ppm. Workman & Hart 2005
Depleted-Depleted MORB Mantle 63 Eu 0.086           ppm Trace element composition of DDMM (Depleted Depleted MORB Mantle) in ppm. Workman & Hart 2005
Depleted-Depleted MORB Mantle 64 Gd 0.324           ppm Trace element composition of DDMM (Depleted Depleted MORB Mantle) in ppm. Workman & Hart 2005
Depleted-Depleted MORB Mantle 72 Hf 0.127           ppm Trace element composition of DDMM (Depleted Depleted MORB Mantle) in ppm. Workman & Hart 2005
Depleted-Depleted MORB Mantle 67 Ho 0.108           ppm Trace element composition of DDMM (Depleted Depleted MORB Mantle) in ppm. Workman & Hart 2005
Depleted-Depleted MORB Mantle 57 La 0.134           ppm Trace element composition of DDMM (Depleted Depleted MORB Mantle) in ppm. Workman & Hart 2005
Depleted-Depleted MORB Mantle 71 Lu 0.056           ppm Trace element composition of DDMM (Depleted Depleted MORB Mantle) in ppm. Workman & Hart 2005
Depleted-Depleted MORB Mantle   Lu/Hf 0.439             Lutetium/Hafnium 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 41 Nb 0.0864           ppm Trace element composition of DDMM (Depleted Depleted MORB Mantle) in ppm. Workman & Hart 2005
Depleted-Depleted MORB Mantle 60 Nd 0.483           ppm Trace element composition of DDMM (Depleted Depleted MORB Mantle) in ppm. Workman & Hart 2005
Depleted-Depleted MORB Mantle 82 Pb 0.014           ppm Trace element composition of DDMM (Depleted Depleted MORB Mantle) in ppm. Workman & Hart 2005
Depleted-Depleted MORB Mantle 59 Pr 0.087           ppm Trace element composition of DDMM (Depleted Depleted MORB Mantle) in ppm. Workman & Hart 2005
Depleted-Depleted MORB Mantle 37 Rb 0.02           ppm Trace element composition of DDMM (Depleted Depleted MORB Mantle) in ppm. 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 62 Sm 0.21           ppm Trace element composition of DDMM (Depleted Depleted MORB Mantle) in ppm. Workman & Hart 2005
Depleted-Depleted MORB Mantle   Sm/Nd 0.435             Samarium/Neodymium 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-Depleted MORB Mantle 73 Ta 0.0056           ppm Trace element composition of DDMM (Depleted Depleted MORB Mantle) in ppm. Workman & Hart 2005
Depleted-Depleted MORB Mantle 65 Tb 0.064           ppm Trace element composition of DDMM (Depleted Depleted MORB Mantle) in ppm. Workman & Hart 2005
Depleted-Depleted MORB Mantle 90 Th 0.004           ppm Trace element composition of DDMM (Depleted Depleted MORB Mantle) in ppm. Workman & Hart 2005
Depleted-Depleted MORB Mantle   Th/U 2.2             Thorium/Uranium 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. Th/U ratios taken from U-Series disequilibrium studies on MORBs. Workman & Hart 2005 Lundstrom et al. 1999
Sims et al. 2002
Sims et al. 2003
Depleted-Depleted MORB Mantle 22 Ti 650           ppm Trace element composition of DDMM (Depleted Depleted MORB Mantle) in ppm. Workman & Hart 2005
Depleted-Depleted MORB Mantle 92 U 0.0018           ppm Trace element composition of DDMM (Depleted Depleted MORB Mantle) in ppm. Workman & Hart 2005
Depleted-Depleted MORB Mantle   U/Pb 0.131             Uranium/Lead 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 39 Y 3.129           ppm Trace element composition of DDMM (Depleted Depleted MORB Mantle) in ppm. Workman & Hart 2005
Depleted-Depleted MORB Mantle 70 Yb 0.348           ppm Trace element composition of DDMM (Depleted Depleted MORB Mantle) in ppm. Workman & Hart 2005
Depleted-Depleted MORB Mantle 40 Zr 4.269           ppm Trace element composition of DDMM (Depleted Depleted MORB Mantle) in ppm. Workman & Hart 2005
Enriched-Depleted MORB Mantle   143Nd/144Nd 0.513             Neodymium 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   176Hf/177Hf 0.2831             Hafnium 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   206Pb/204Pb 18.977             Lead 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   207Pb/204Pb 15.568             Lead 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   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 56 Ba 1.219           ppm Trace element composition of EDMM (Enriched Depleted MORB Mantle) in ppm. Workman & Hart 2005
Enriched-Depleted MORB Mantle 58 Ce 0.726           ppm Trace element composition of EDMM (Enriched Depleted MORB Mantle) in ppm. Workman & Hart 2005
Enriched-Depleted MORB Mantle 66 Dy 0.543           ppm Trace element composition of EDMM (Enriched Depleted MORB Mantle) in ppm. Workman & Hart 2005
Enriched-Depleted MORB Mantle 68 Er 0.369           ppm Trace element composition of EDMM (Enriched Depleted MORB Mantle) in ppm. Workman & Hart 2005
Enriched-Depleted MORB Mantle 63 Eu 0.108           ppm Trace element composition of EDMM (Enriched Depleted MORB Mantle) in ppm. Workman & Hart 2005
Enriched-Depleted MORB Mantle 64 Gd 0.397           ppm Trace element composition of EDMM (Enriched Depleted MORB Mantle) in ppm. Workman & Hart 2005
Enriched-Depleted MORB Mantle 72 Hf 0.186           ppm Trace element composition of EDMM (Enriched Depleted MORB Mantle) in ppm. Workman & Hart 2005
Enriched-Depleted MORB Mantle 67 Ho 0.123           ppm Trace element composition of EDMM (Enriched Depleted MORB Mantle) in ppm. Workman & Hart 2005
Enriched-Depleted MORB Mantle 57 La 0.253           ppm Trace element composition of EDMM (Enriched Depleted MORB Mantle) in ppm. Workman & Hart 2005
Enriched-Depleted MORB Mantle 71 Lu 0.06           ppm Trace element composition of EDMM (Enriched Depleted MORB Mantle) in ppm. Workman & Hart 2005
Enriched-Depleted MORB Mantle   Lu/Hf 0.325             Lutetium/Hafnium 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 41 Nb 0.2462           ppm Trace element composition of EDMM (Enriched Depleted MORB Mantle) in ppm. Workman & Hart 2005
Enriched-Depleted MORB Mantle 60 Nd 0.703           ppm Trace element composition of EDMM (Enriched Depleted MORB Mantle) in ppm. Workman & Hart 2005
Enriched-Depleted MORB Mantle 82 Pb 0.024           ppm Trace element composition of EDMM (Enriched Depleted MORB Mantle) in ppm. Workman & Hart 2005
Enriched-Depleted MORB Mantle 59 Pr 0.132           ppm Trace element composition of EDMM (Enriched Depleted MORB Mantle) in ppm. Workman & Hart 2005
Enriched-Depleted MORB Mantle 37 Rb 0.108           ppm Trace element composition of EDMM (Enriched Depleted MORB Mantle) in ppm. 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 62 Sm 0.273           ppm Trace element composition of EDMM (Enriched Depleted MORB Mantle) in ppm. Workman & Hart 2005
Enriched-Depleted MORB Mantle   Sm/Nd 0.388             Samarium/Neodymium 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
Enriched-Depleted MORB Mantle 73 Ta 0.0159           ppm Trace element composition of EDMM (Enriched Depleted MORB Mantle) in ppm. Workman & Hart 2005
Enriched-Depleted MORB Mantle 65 Tb 0.076           ppm Trace element composition of EDMM (Enriched Depleted MORB Mantle) in ppm. Workman & Hart 2005
Enriched-Depleted MORB Mantle 90 Th 0.0157           ppm Trace element composition of EDMM (Enriched Depleted MORB Mantle) in ppm. Workman & Hart 2005
Enriched-Depleted MORB Mantle   Th/U 3             Thorium/Uranium 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. Th/U ratios taken from U-Series disequilibrium studies on MORBs. Workman & Hart 2005 Lundstrom et al. 1999
Sims et al. 2002
Sims et al. 2003
Enriched-Depleted MORB Mantle 22 Ti 792           ppm Trace element composition of EDMM (Enriched Depleted MORB Mantle) in ppm. Workman & Hart 2005
Enriched-Depleted MORB Mantle 92 U 0.0052           ppm Trace element composition of EDMM (Enriched Depleted MORB Mantle) in ppm. Workman & Hart 2005
Enriched-Depleted MORB Mantle   U/Pb 0.217             Uranium/Lead 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 39 Y 3.548           ppm Trace element composition of EDMM (Enriched Depleted MORB Mantle) in ppm. Workman & Hart 2005
Enriched-Depleted MORB Mantle 70 Yb 0.382           ppm Trace element composition of EDMM (Enriched Depleted MORB Mantle) in ppm. Workman & Hart 2005
Enriched-Depleted MORB Mantle 40 Zr 6.087           ppm Trace element composition of EDMM (Enriched Depleted MORB Mantle) in ppm. Workman & Hart 2005
N-MORB 13 Al 16.75           wt% Primary N-MORB (Normal Mid-Ocean Ridge Basalt) major element compositions as measured by Presnall & Hoover 1987. All mineral compositions normalized to 100%. Workman & Hart 2005 Presnall & Hoover 1987
N-MORB 20 Ca 12.5           wt% Primary N-MORB (Normal Mid-Ocean Ridge Basalt) major element compositions as measured by Presnall & Hoover 1987. All mineral compositions normalized to 100%. Workman & Hart 2005 Presnall & Hoover 1987
N-MORB   CaO/Al2O3 0.75             Primary N-MORB (Normal Mid-Ocean Ridge Basalt) major element compositions as measured by Presnall & Hoover 1987. Workman & Hart 2005 Presnall & Hoover 1987
N-MORB 24 Cr 0.07           wt% Primary N-MORB (Normal Mid-Ocean Ridge Basalt) major element compositions as measured by Presnall & Hoover 1987. All mineral compositions normalized to 100%. Workman & Hart 2005 Presnall & Hoover 1987
N-MORB 26 Fe 8.05           wt% Primary N-MORB (Normal Mid-Ocean Ridge Basalt) major element compositions as measured by Presnall & Hoover 1987. Total Fe as FeO. All mineral compositions normalized to 100%. Workman & Hart 2005 Presnall & Hoover 1987
N-MORB 19 K 0.065           wt% Primary N-MORB (Normal Mid-Ocean Ridge Basalt) major element compositions as measured by Presnall & Hoover 1987. All mineral compositions normalized to 100%. Workman & Hart 2005 Presnall & Hoover 1987
N-MORB 12 Mg 70.6           ng/g Mg #= Molar ratio of Mg/(Mg+Fe^2+); Mg # of N-MORB uses 90% total FeO as Fe2+. Workman & Hart 2005 Presnall & Hoover 1987
N-MORB 12 Mg 9.74           wt% Primary N-MORB (Normal Mid-Ocean Ridge Basalt) major element compositions as measured by Presnall & Hoover 1987. All mineral compositions normalized to 100%. Workman & Hart 2005 Presnall & Hoover 1987
N-MORB 25 Mn 0.14           wt% Primary N-MORB (Normal Mid-Ocean Ridge Basalt) major element compositions as measured by Presnall & Hoover 1987. All mineral compositions normalized to 100%. Workman & Hart 2005 Presnall & Hoover 1987
N-MORB 11 Na 2.18           wt% Primary N-MORB (Normal Mid-Ocean Ridge Basalt) major element compositions as measured by Presnall & Hoover 1987. All mineral compositions normalized to 100%. Workman & Hart 2005 Presnall & Hoover 1987
N-MORB 15 P 0.095           wt% Primary N-MORB (Normal Mid-Ocean Ridge Basalt) major element compositions as measured by Presnall & Hoover 1987. All mineral compositions normalized to 100%. Workman & Hart 2005 Presnall & Hoover 1987
N-MORB 14 Si 49.51           wt% Primary N-MORB (Normal Mid-Ocean Ridge Basalt) major element compositions as measured by Presnall & Hoover 1987. All mineral compositions normalized to 100%. Workman & Hart 2005 Presnall & Hoover 1987
N-MORB 22 Ti 0.9           wt% Primary N-MORB (Normal Mid-Ocean Ridge Basalt) major element compositions as measured by Presnall & Hoover 1987. All mineral compositions normalized to 100%. Workman & Hart 2005 Presnall & Hoover 1987
Primitive Mantle 13 Al 4.44           wt% Primitive Upper Mantle (PUM) major element compositions as measured by McDonough & Sun 1995.  All mineral compositions normalized to 100%. Workman & Hart 2005 McDonough & Sun 1995
Primitive Mantle 20 Ca 3.54           wt% Primitive Upper Mantle (PUM) major element compositions as measured by McDonough & Sun 1995. All mineral compositions normalized to 100%. Workman & Hart 2005 McDonough & Sun 1995
Primitive Mantle   CaO/Al2O3 0.8             Primitive Upper Mantle (PUM) major element compositions as measured by McDonough & Sun 1995. Workman & Hart 2005 McDonough & Sun 1995
Primitive Mantle 24 Cr 0.38           wt% Primitive Upper Mantle (PUM) major element compositions as measured by McDonough & Sun 1995. All mineral compositions normalized to 100%. Workman & Hart 2005 McDonough & Sun 1995
Primitive Mantle 26 Fe 8.03           wt% Primitive Upper Mantle (PUM) major element compositions as measured by McDonough & Sun 1995. Total Fe as FeO. All mineral compositions normalized to 100%. Workman & Hart 2005 McDonough & Sun 1995
Primitive Mantle 19 K 0.029           wt% Primitive Upper Mantle (PUM) major element compositions as measured by McDonough & Sun 1995. All mineral compositions normalized to 100%. Workman & Hart 2005 McDonough & Sun 1995
Primitive Mantle 12 Mg 89.3             Mg #= Molar ratio of Mg/(Mg+Fe^2+); Mg # of N-MORB uses 90% total FeO as Fe2+. Workman & Hart 2005 McDonough & Sun 1995
Primitive Mantle 12 Mg 37.71           wt% Primitive Upper Mantle (PUM) major element compositions as measured by McDonough & Sun 1995. All mineral compositions normalized to 100%. Workman & Hart 2005 McDonough & Sun 1995
Primitive Mantle 25 Mn 0.13           wt% Primitive Upper Mantle (PUM) major element compositions as measured by McDonough & Sun 1995. All mineral compositions normalized to 100%. Workman & Hart 2005 McDonough & Sun 1995
Primitive Mantle 11 Na 0.36           wt% Primitive Upper Mantle (PUM) major element compositions as measured by McDonough & Sun 1995. All mineral compositions normalized to 100%. Workman & Hart 2005 McDonough & Sun 1995
Primitive Mantle 28 Ni 0.25           wt% Primitive Upper Mantle (PUM) major element compositions as measured by McDonough & Sun 1995. All mineral compositions normalized to 100%. Workman & Hart 2005 McDonough & Sun 1995
Primitive Mantle 15 P 0.021           wt% Primitive Upper Mantle (PUM) major element compositions as measured by McDonough & Sun 1995. All mineral compositions normalized to 100%. Workman & Hart 2005 McDonough & Sun 1995
Primitive Mantle 14 Si 44.9           wt% Primitive Upper Mantle (PUM) major element compositions as measured by McDonough & Sun 1995.  All mineral compositions normalized to 100%. Workman & Hart 2005 McDonough & Sun 1995
Primitive Mantle 22 Ti 0.2           wt% Primitive Upper Mantle (PUM) major element compositions as measured by McDonough & Sun 1995. All mineral compositions normalized to 100%. Workman & Hart 2005 McDonough & Sun 1995
Silicate Earth   143Nd/144Nd 0.512638             Present day Nd parent/daughter ratios from isotopic signatures in relation to ratios from abyssal peridotite depletion trends. Workman & Hart 2005
Silicate Earth   176Hf/177Hf 0.28276             Bulk Silicate Earth Hafnium ratios as measured from MORB mantle. Workman & Hart 2005
Silicate Earth   206Pb/204Pb 17.511             Present day Pb parent/daughter ratios from isotopic signatures in relation to ratios from abyssal peridotite depletion trends. Workman & Hart 2005
Silicate Earth   207Pb/204Pb 15.361             Present day Pb parent/daughter ratios from isotopic signatures in relation to ratios from abyssal peridotite depletion trends. Workman & Hart 2005
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   Lu/Hf 0.239             Lu/Hf ratio as calculated by Workman & Hart 2005 using MORBs Workman & Hart 2005
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   Sm/Nd 0.325             Sm/Nd ratio as calculated by Workman & Hart 2005 using MORBs Workman & Hart 2005
Silicate Earth   Th/U 3.9             Th/U ratios taken from U-series disequilibrium studies on MORBs. Workman & Hart 2005 Lundstrom et al. 1999
Sims et al. 2002
Sims et al. 2003
Silicate Earth   U/Pb 0.13             U/Pb ratio as calculated by Workman & Hart 2005 using MORBs Workman & Hart 2005
Click to return to previous page