GERM Reservoir Database
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GERM Database Search Results        
Reservoir Z Element Value Median SD Low High N Unit Info Reference Source(s)
Depleted D-MORB basalts   143Nd/144Nd 0.51311             Isotopic compositions of Depleted Mantle (DM) according to Neodymium isotopes in the 'Average' present day MORB.  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
Depleted D-MORB basalts   176Hf/177Hf 0.2833             Isotopic compositions of Depleted Mantle (DM) according to Hafnium isotopes in the 'Average' present day MORB.  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
Depleted D-MORB basalts   208Pb/204Pb 37.92             Isotopic compositions of Depleted Mantle (DM) according to Lead isotopes in the 'Average' present day MORB.  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
Depleted D-MORB basalts   87Sr/86Sr 0.7026             Isotopic compositions of Depleted Mantle (DM) according to Strontium isotopes in the 'Average' present day MORB.  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
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   Ba/Th 87.3             Constant' ratios in MORB as taken from the D-MORB (Depleted MORB) compilation as explained in Salters and Stracke 2003.  This compliation of 232 ratio values represent one method of removing low degree melts from MORB data.  All values have gone thru a series of tests and must meet certain criteria to be added to the D-MORB compilation.  This in turn leads to better estimates of values for the Depleted Mantle. Salters & Stracke 2004
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   Ce/Nd 1.083             Constant' ratios in MORB as taken from the D-MORB (Depleted MORB) compilation as explained in Salters and Stracke 2003.  This compliation of 232 ratio values represent one method of removing low degree melts from MORB data.  All values have gone thru a series of tests and must meet certain criteria to be added to the D-MORB compilation.  This in turn leads to better estimates of values for the Depleted Mantle. Salters & Stracke 2004
Depleted D-MORB basalts   Ce/P 0.19             Constant' ratios in MORB as taken from the D-MORB (Depleted MORB) compilation as explained in Salters and Stracke 2003.  This compliation of 232 ratio values represent one method of removing low degree melts from MORB data.  All values have gone thru a series of tests and must meet certain criteria to be added to the D-MORB compilation.  This in turn leads to better estimates of values for the Depleted Mantle. Salters & Stracke 2004
Depleted D-MORB basalts   Ce/Pb 25             Constant' ratios in MORB as taken from the D-MORB (Depleted MORB) compilation as explained in Salters and Stracke 2003.  This compliation of 232 ratio values represent one method of removing low degree melts from MORB data.  All values have gone thru a series of tests and must meet certain criteria to be added to the D-MORB compilation.  This in turn leads to better estimates of values for the Depleted Mantle. Salters & Stracke 2004
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   Cs/Rb 0.015             Constant' ratios in MORB as taken from the D-MORB (Depleted MORB) compilation as explained in Salters and Stracke 2003.  This compliation of 232 ratio values represent one method of removing low degree melts from MORB data.  All values have gone thru a series of tests and must meet certain criteria to be added to the D-MORB compilation.  This in turn leads to better estimates of values for the Depleted Mantle. Salters & Stracke 2004
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   K/U 12654             Constant' ratios in MORB as taken from the D-MORB (Depleted MORB) compilation as explained in Salters and Stracke 2003.  This compliation of 232 ratio values represent one method of removing low degree melts from MORB data.  All values have gone thru a series of tests and must meet certain criteria to be added to the D-MORB compilation.  This in turn leads to better estimates of values for the Depleted Mantle. Salters & Stracke 2004
Depleted D-MORB basalts   La/Ce 0.3026             Constant' ratios in MORB as taken from the D-MORB (Depleted MORB) compilation as explained in Salters and Stracke 2003.  This compliation of 232 ratio values represent one method of removing low degree melts from MORB data.  All values have gone thru a series of tests and must meet certain criteria to be added to the D-MORB compilation.  This in turn leads to better estimates of values for the Depleted Mantle. Salters & Stracke 2004
Depleted D-MORB basalts   La/Nb 1.1             Constant' ratios in MORB as taken from the D-MORB (Depleted MORB) compilation as explained in Salters and Stracke 2003.  This compliation of 232 ratio values represent one method of removing low degree melts from MORB data.  All values have gone thru a series of tests and must meet certain criteria to be added to the D-MORB compilation.  This in turn leads to better estimates of values for the Depleted Mantle. Salters & Stracke 2004
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 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 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 0.28           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 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   Nb/Ta 15.19             Constant' ratios in MORB as taken from the D-MORB (Depleted MORB) compilation as explained in Salters and Stracke 2003.  This compliation of 232 ratio values represent one method of removing low degree melts from MORB data.  All values have gone thru a series of tests and must meet certain criteria to be added to the D-MORB compilation.  This in turn leads to better estimates of values for the Depleted Mantle. Salters & Stracke 2004
Depleted D-MORB basalts   Nb/U 44.4             Constant' ratios in MORB as taken from the D-MORB (Depleted MORB) compilation as explained in Salters and Stracke 2003.  This compliation of 232 ratio values represent one method of removing low degree melts from MORB data.  All values have gone thru a series of tests and must meet certain criteria to be added to the D-MORB compilation.  This in turn leads to better estimates of values for the Depleted Mantle. Salters & Stracke 2004
Depleted D-MORB basalts   Nd/Pr 5.443             Constant' ratios in MORB as taken from the D-MORB (Depleted MORB) compilation as explained in Salters and Stracke 2003.  This compliation of 232 ratio values represent one method of removing low degree melts from MORB data.  All values have gone thru a series of tests and must meet certain criteria to be added to the D-MORB compilation.  This in turn leads to better estimates of values for the Depleted Mantle. Salters & Stracke 2004
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   Rb/Ba 0.0731             Constant' ratios in MORB as taken from the D-MORB (Depleted MORB) compilation as explained in Salters and Stracke 2003.  This compliation of 232 ratio values represent one method of removing low degree melts from MORB data.  All values have gone thru a series of tests and must meet certain criteria to be added to the D-MORB compilation.  This in turn leads to better estimates of values for the Depleted Mantle. Salters & Stracke 2004
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   Sm/Hf 1.355             Constant' ratios in MORB as taken from the D-MORB (Depleted MORB) compilation as explained in Salters and Stracke 2003.  This compliation of 232 ratio values represent one method of removing low degree melts from MORB data.  All values have gone thru a series of tests and must meet certain criteria to be added to the D-MORB compilation.  This in turn leads to better estimates of values for the Depleted Mantle. Salters & Stracke 2004
Depleted D-MORB basalts   Sr/Nd 13.74             Constant' ratios in MORB as taken from the D-MORB (Depleted MORB) compilation as explained in Salters and Stracke 2003.  This compliation of 232 ratio values represent one method of removing low degree melts from MORB data.  All values have gone thru a series of tests and must meet certain criteria to be added to the D-MORB compilation.  This in turn leads to better estimates of values for the Depleted Mantle. Salters & Stracke 2004
Depleted D-MORB basalts   Sr/Nd 13.74             Constant' ratios in MORB as taken from the D-MORB (Depleted MORB) compilation as explained in Salters and Stracke 2003.  This compliation of 232 ratio values represent one method of removing low degree melts from MORB data.  All values have gone thru a series of tests and must meet certain criteria to be added to the D-MORB compilation.  This in turn leads to better estimates of values for the Depleted Mantle. Salters & Stracke 2004
Depleted D-MORB basalts   Th/U 2.9             Constant' ratios in MORB as taken from the D-MORB (Depleted MORB) compilation as explained in Salters and Stracke 2003.  This compliation of 232 ratio values represent one method of removing low degree melts from MORB data.  All values have gone thru a series of tests and must meet certain criteria to be added to the D-MORB compilation.  This in turn leads to better estimates of values for the Depleted Mantle. Salters & Stracke 2004
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 D-MORB basalts   Ti/Gd 2020             Constant' ratios in MORB as taken from the D-MORB (Depleted MORB) compilation as explained in Salters and Stracke 2003.  This compliation of 232 ratio values represent one method of removing low degree melts from MORB data.  All values have gone thru a series of tests and must meet certain criteria to be added to the D-MORB compilation.  This in turn leads to better estimates of values for the Depleted Mantle. Salters & Stracke 2004
Depleted D-MORB basalts   Y/Yb 10.144             Constant' ratios in MORB as taken from the D-MORB (Depleted MORB) compilation as explained in Salters and Stracke 2003.  This compliation of 232 ratio values represent one method of removing low degree melts from MORB data.  All values have gone thru a series of tests and must meet certain criteria to be added to the D-MORB compilation.  This in turn leads to better estimates of values for the Depleted Mantle. Salters & Stracke 2004
Depleted D-MORB basalts   Zr/Hf 39.83             Constant' ratios in MORB as taken from the D-MORB (Depleted MORB) compilation as explained in Salters and Stracke 2003.  This compliation of 232 ratio values represent one method of removing low degree melts from MORB data.  All values have gone thru a series of tests and must meet certain criteria to be added to the D-MORB compilation.  This in turn leads to better estimates of values for the Depleted Mantle. Salters & Stracke 2004
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