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)
Andesites 6 C       10 1200   ppm Averages of typical pre-eruptive volatile abundances in Andesites. Note that it is particularly difficult to quantify pre-eruptive volatile abundances for Andesites because most are erupted subaerially after significant degassing has taken place and contain abundant phenocrysts such that liquid compositions are more silicic than bulk rock. Mineral disequilibria also hamper experimental work. Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Andesites 17 Cl       1500 5000   ppm Averages of typical pre-eruptive volatile abundances in Andesites. Note that it is particularly difficult to quantify pre-eruptive volatile abundances for Andesites because most are erupted subaerially after significant degassing has taken place and contain abundant phenocrysts such that liquid compositions are more silicic than bulk rock. Mineral disequilibria also hamper experimental work. Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Andesites 9 F         500   ppm Averages of typical pre-eruptive volatile abundances in Andesites. Note that it is particularly difficult to quantify pre-eruptive volatile abundances for Andesites because most are erupted subaerially after significant degassing has taken place and contain abundant phenocrysts such that liquid compositions are more silicic than bulk rock. Mineral disequilibria also hamper experimental work. Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Andesites 1 H       3     wt% Averages of typical pre-eruptive volatile abundances in Andesites. Note that it is particularly difficult to quantify pre-eruptive volatile abundances for Andesites because most are erupted subaerially after significant degassing has taken place and contain abundant phenocrysts such that liquid compositions are more silicic than bulk rock. Mineral disequilibria also hamper experimental work. Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Andesites 16 S       200 400   ppm Averages of typical pre-eruptive volatile abundances in Andesites. Note that it is particularly difficult to quantify pre-eruptive volatile abundances for Andesites because most are erupted subaerially after significant degassing has taken place and contain abundant phenocrysts such that liquid compositions are more silicic than bulk rock. Mineral disequilibria also hamper experimental work. Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Andesites 16 S         1000   ppm Averages of typical pre-eruptive volatile abundances in Andesites. Note that it is particularly difficult to quantify pre-eruptive volatile abundances for Andesites because most are erupted subaerially after significant degassing has taken place and contain abundant phenocrysts such that liquid compositions are more silicic than bulk rock. Mineral disequilibria also hamper experimental work. Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Back Arc Basin Basalt 1 H       1 3   wt% Average of typical pre-eruptive H2O volatile abundance for Back Arc Basin Basalt (BABB). Generally speaking these particular values are intermediate between MORB and Island Arc Basalts. Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Continental Arc Basalt 6 C 1.44             Compositional analyses of Basalt obtained by direct sampling of hot gas vents at Momotombo Volcano 1980. Based on the geology of this region the volatile levels are consistent with those of any subducted continental margin. Carbon in this particular case is given as CO2. Oppenheimer 2004 Symonds et al. 1994
Continental Arc Basalt 27 Co 0.0096             Compositional analyses of Basalt obtained by direct sampling of hot gas vents at Momotombo Volcano 1980. Based on the geology of this region the volatile levels are consistent with those of any subducted continental margin. Carbon in this particular case is given as CO. Oppenheimer 2004 Symonds et al. 1994
Continental Arc Basalt 1 H 2.89             Compositional analyses of Basalt obtained by direct sampling of hot gas vents at Momotombo Volcano 1980. Based on the geology of this region the volatile levels are consistent with those of any subducted continental margin. Hydrogen in this particular case is given as HCl. Oppenheimer 2004 Symonds et al. 1994
Continental Arc Basalt 1 H 0.7             Compositional analyses of Basalt obtained by direct sampling of hot gas vents at Momotombo Volcano 1980. Based on the geology of this region the volatile levels are consistent with those of any subducted continental margin. Hydrogen in this particular value is given as H2 (Pure Hydrogen Gas Emissions). Oppenheimer 2004 Symonds et al. 1994
Continental Arc Basalt 1 H 0.259             Compositional analyses of Basalt obtained by direct sampling of hot gas vents at Momotombo Volcano 1980. Based on the geology of this region the volatile levels are consistent with those of any subducted continental margin. Hydrogen in this particular case is given as HF. Oppenheimer 2004 Symonds et al. 1994
Continental Arc Basalt 1 H 0.23             Compositional analyses of Basalt obtained by direct sampling of hot gas vents at Momotombo Volcano 1980. Based on the geology of this region the volatile levels are consistent with those of any subducted continental margin. Hydrogen in this particular case is given as H2S gas. Oppenheimer 2004 Symonds et al. 1994
Continental Arc Basalt 1 H 97.11             Compositional analyses of Basalt obtained by direct sampling of hot gas vents at Momotombo Volcano 1980. Based on the geology of this region the volatile levels are consistent with those of any subducted continental margin. Hydrogen in this particular value is given as H2O. Oppenheimer 2004 Symonds et al. 1994
Continental Arc Basalt 16 S 0.0003             Compositional analyses of Basalt obtained by direct sampling of hot gas vents at Momotombo Volcano 1980. Based on the geology of this region the volatile levels are consistent with those of any subducted continental margin. Sulfur in this particular case is given as S2 gas. Oppenheimer 2004 Symonds et al. 1994
Continental Arc Basalt 16 S 0.5             Compositional analyses of Basalt obtained by direct sampling of hot gas vents at Momotombo Volcano 1980. Based on the geology of this region the volatile levels are consistent with those of any subducted continental margin. Sulfur in this particular case is given as SO2 gas. Oppenheimer 2004 Symonds et al. 1994
Dacites 6 C 6.924             Compositional analyses of Dacite obtained by direct sampling of hot gas vents at Mt. St. Helens 1980. Based on the geology of this region the volatile levels are consistent with those of any subducted continental margin. Carbon in this particular case is given as CO2. Oppenheimer 2004 Symonds et al. 1994
Dacites 27 Co 0.06             Compositional analyses of Dacite obtained by direct sampling of hot gas vents at Mt. St. Helens 1980. Based on the geology of this region the volatile levels are consistent with those of any subducted continental margin. Oppenheimer 2004 Symonds et al. 1994
Dacites 1 H 0.8542             Compositional analyses of Dacite obtained by direct sampling of hot gas vents at Mt. St. Helens 1980. Based on the geology of this region the volatile levels are consistent with those of any subducted continental margin. Hydrogen in this particular value is given as H2 (Pure Hydrogen Gas Emissions). Oppenheimer 2004 Symonds et al. 1994
Dacites 1 H 0.3553             Compositional analyses of Dacite obtained by direct sampling of hot gas vents at Mt. St. Helens 1980. Based on the geology of this region the volatile levels are consistent with those of any subducted continental margin. Hydrogen in this particular case is given as H2S gas. Oppenheimer 2004 Symonds et al. 1994
Dacites 1 H 91.58             Compositional analyses of Dacite obtained by direct sampling of hot gas vents at Mt. St. Helens 1980. Based on the geology of this region the volatile levels are consistent with those of any subducted continental margin. Hydrogen in this case is represented by H2O. Oppenheimer 2004 Symonds et al. 1994
Dacites 16 S 0.0039             Compositional analyses of Dacite obtained by direct sampling of hot gas vents at Mt. St. Helens 1980. Based on the geology of this region the volatile levels are consistent with those of any subducted continental margin. Sulfur in this particular case is given as S2 gas. Oppenheimer 2004 Symonds et al. 1994
Dacites 16 S 0.2089             Compositional analyses of Dacite obtained by direct sampling of hot gas vents at Mt. St. Helens 1980. Based on the geology of this region the volatile levels are consistent with those of any subducted continental margin. Sulfur in this particular case is given as SO2 gas. Oppenheimer 2004 Symonds et al. 1994
Fresh Mid-Ocean Ridge Basalts 6 C 11.26             Compositional analyses of Transitional Mid-Ocean Ridge Basalt obtained by direct sampling of hot gas vents at Erta 'Ale Volcano 1974. Based on the geology of this region the volatile levels are consistent with those of any subducted continental margin. Carbon in this particular case is given as CO2. Oppenheimer 2004 Symonds et al. 1994
Fresh Mid-Ocean Ridge Basalts 6 C       50 400   ppm Averages of typical pre-eruptive volatile abundances in magmas of MORB settings. The values reported are generally for the melt phase (dissolved). Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Fresh Mid-Ocean Ridge Basalts 17 Cl       20 50   ppm Averages of typical pre-eruptive volatile abundances in magmas of MORB settings. The values reported are generally for the melt phase (dissolved). Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Fresh Mid-Ocean Ridge Basalts 27 Co 0.44             Compositional analyses of Transitional Mid-Ocean Ridge Basalt obtained by direct sampling of hot gas vents at Erta 'Ale Volcano 1974. Based on the geology of this region the volatile levels are consistent with those of any subducted continental margin. Carbon in this particular case is given as CO. Oppenheimer 2004 Symonds et al. 1994
Fresh Mid-Ocean Ridge Basalts 9 F       100 600   ppm Averages of typical pre-eruptive volatile abundances in magmas of MORB settings. The values reported are generally for the melt phase (dissolved). Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Fresh Mid-Ocean Ridge Basalts 1 H 1.5           wt% Averages of typical pre-eruptive volatile abundances in magmas of MORB settings. This particular value is that of Enriched Mid-Ocean Ridge Basalt (E-MORB). The values reported are generally for the melt phase (dissolved). Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Fresh Mid-Ocean Ridge Basalts 1 H       0.1 0.2   wt% Averages of typical pre-eruptive volatile abundances in magmas of MORB settings. The values reported are generally for the melt phase (dissolved). Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Fresh Mid-Ocean Ridge Basalts 1 H       0.4 0.5   wt% Averages of typical pre-eruptive volatile abundances in magmas of MORB settings. The values reported are generally for the melt phase (dissolved). Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Fresh Mid-Ocean Ridge Basalts 1 H 0.42             Compositional analyses of Transitional Mid-Ocean Ridge Basalt obtained by direct sampling of hot gas vents at Erta 'Ale Volcano 1974. Based on the geology of this region the volatile levels are consistent with those of any subducted continental margin. Hydrogen in this particular case is given as HCl. Oppenheimer 2004 Symonds et al. 1994
Fresh Mid-Ocean Ridge Basalts 1 H 0.68             Compositional analyses of Transitional Mid-Ocean Ridge Basalt obtained by direct sampling of hot gas vents at Erta 'Ale Volcano 1974. Based on the geology of this region the volatile levels are consistent with those of any subducted continental margin. Hydrogen in this particular case is given as H2S gas. Oppenheimer 2004 Symonds et al. 1994
Fresh Mid-Ocean Ridge Basalts 1 H 77.24             Compositional analyses of Transitional Mid-Ocean Ridge Basalt obtained by direct sampling of hot gas vents at Erta 'Ale Volcano 1974. Based on the geology of this region the volatile levels are consistent with those of any subducted continental margin. Hydrogen in this particular value is given as H2O. Oppenheimer 2004 Symonds et al. 1994
Fresh Mid-Ocean Ridge Basalts 1 H 1.39             Compositional analyses of Transitional Mid-Ocean Ridge Basalt obtained by direct sampling of hot gas vents at Erta 'Ale Volcano 1974. Based on the geology of this region the volatile levels are consistent with those of any subducted continental margin. Hydrogen in this particular value is given as H2 (Pure Hydrogen Gas Emissions). Oppenheimer 2004 Symonds et al. 1994
Fresh Mid-Ocean Ridge Basalts 16 S       800 1500   ppm Averages of typical pre-eruptive volatile abundances in magmas of MORB settings. The values reported are generally for the melt phase (dissolved). Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Fresh Mid-Ocean Ridge Basalts 16 S 8.34             Compositional analyses of Transitional Mid-Ocean Ridge Basalt obtained by direct sampling of hot gas vents at Erta 'Ale Volcano 1974. Based on the geology of this region the volatile levels are consistent with those of any subducted continental margin. Sulfur in this particular case is given as SO2 gas. Oppenheimer 2004 Symonds et al. 1994
Fresh Mid-Ocean Ridge Basalts 16 S 0.21             Compositional analyses of Transitional Mid-Ocean Ridge Basalt obtained by direct sampling of hot gas vents at Erta 'Ale Volcano 1974. Based on the geology of this region the volatile levels are consistent with those of any subducted continental margin. Sulfur in this particular case is given as S2 gas. Oppenheimer 2004 Symonds et al. 1994
Island Arc Andesite 6 C 1.9             Compositional analyses of Andesite obtained by direct sampling of hot gas vents at Mt. St. Augustine 1979. Based on the geology of this region the volatile levels are consistent with those of any island arc. Carbon in this particular case is given as CO2. Oppenheimer 2004 Symonds et al. 1994
Island Arc Andesite 27 Co 0.0035             Compositional analyses of Andesite obtained by direct sampling of hot gas vents at Mt. St. Augustine 1979. Based on the geology of this region the volatile levels are consistent with those of any island arc. Carbon in this particular case is given as CO. Oppenheimer 2004 Symonds et al. 1994
Island Arc Andesite 1 H 97.23             Compositional analyses of Andesite obtained by direct sampling of hot gas vents at Mt. St. Augustine 1979. Based on the geology of this region the volatile levels are consistent with those of any island arc. Hydrogen in this particular value is given as H2O. Oppenheimer 2004 Symonds et al. 1994
Island Arc Andesite 1 H 0.381             Compositional analyses of Andesite obtained by direct sampling of hot gas vents at Mt. St. Augustine 1979. Based on the geology of this region the volatile levels are consistent with those of any island arc. Hydrogen in this particular value is given as H2 (Pure Hydrogen Gas Emissions). Oppenheimer 2004 Symonds et al. 1994
Island Arc Andesite 1 H 0.056             Compositional analyses of Andesite obtained by direct sampling of hot gas vents at Mt. St. Augustine 1979. Based on the geology of this region the volatile levels are consistent with those of any island arc. Hydrogen in this particular case is given as HF. Oppenheimer 2004 Symonds et al. 1994
Island Arc Andesite 1 H 0.057             Compositional analyses of Andesite obtained by direct sampling of hot gas vents at Mt. St. Augustine 1979. Based on the geology of this region the volatile levels are consistent with those of any island arc. Hydrogen in this particular case is given as H2S gas. Oppenheimer 2004 Symonds et al. 1994
Island Arc Andesite 1 H 0.365             Compositional analyses of Andesite obtained by direct sampling of hot gas vents at Mt. St. Augustine 1979. Based on the geology of this region the volatile levels are consistent with those of any island arc. Hydrogen in this particular case is given as HCl. Oppenheimer 2004 Symonds et al. 1994
Island Arc Andesite 16 S 0.006             Compositional analyses of Andesite obtained by direct sampling of hot gas vents at Mt. St. Augustine 1979. Based on the geology of this region the volatile levels are consistent with those of any island arc. Sulfur in this particular case is given as SO2 gas. Oppenheimer 2004 Symonds et al. 1994
Island Arc Basalt 1 H       4 6   wt% Average of typical pre-eruptive H2O volatile abundance in Arc Basalts. Actual values are up to and including these given abundances, largely sourced from subducted slab; crustal assimilation another potential source especially for arcs built on continental crust. Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Ocean Island Basalts 6 C       2000 6500   ppm Averages of typical pre-eruptive volatile abundances in magmas of OIB setting. The values reported are typically that of the melt phase (dissolved). These values are taken from Hawaiian Ocean Island Basalt. Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Ocean Island Basalts 6 C 3.15             Compositional analyses of Ocean Island Basalt obtained by direct sampling of hot gas vents at Kiluaea Volcano 1983. Based on the geology of this region the volatile (Type II Gas) levels are consistent with those of any subducted continental margin. Carbon in this particular case is given as CO2. Oppenheimer 2004 Symonds et al. 1994
Ocean Island Basalts 6 C 48.9             Compositional analyses of Ocean Island Basalt obtained by direct sampling of hot gas vents at Kiluaea Volcano 1918. Based on the geology of this region the volatile (Type I Gas) levels are consistent with those of any subducted continental margin. Carbon in this particular case is given as CO2. Oppenheimer 2004 Symonds et al. 1994
Ocean Island Basalts 17 Cl 90           ppm Averages of typical pre-eruptive volatile abundances in magmas of OIB setting. The values reported are typically that of the melt phase (dissolved). These volatile abundances are taken from Kilauea Volcano in Hawaii. Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Ocean Island Basalts 27 Co 0.0592             Compositional analyses of Ocean Island Basalt obtained by direct sampling of hot gas vents at Kiluaea Volcano 1983. Based on the geology of this region the volatile (Type II Gas) levels are consistent with those of any subducted continental margin. Carbon in this particular case is given as CO. Oppenheimer 2004 Symonds et al. 1994
Ocean Island Basalts 27 Co 1.51             Compositional analyses of Ocean Island Basalt obtained by direct sampling of hot gas vents at Kiluaea Volcano 1918. Based on the geology of this region the volatile (Type I Gas) levels are consistent with those of any subducted continental margin. Carbon in this particular case is given as CO. Oppenheimer 2004 Symonds et al. 1994
Ocean Island Basalts 9 F 35           ppm Averages of typical pre-eruptive volatile abundances in magmas of OIB setting. The values reported are typically that of the melt phase (dissolved). These volatile abundances are taken from Kilauea Volcano in Hawaii. Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Ocean Island Basalts 1 H 79.8             Compositional analyses of Ocean Island Basalt obtained by direct sampling of hot gas vents at Kiluaea Volcano 1983. Based on the geology of this region the volatile (Type II Gas) levels are consistent with those of any subducted continental margin. Oppenheimer 2004 Symonds et al. 1994
Ocean Island Basalts 1 H       0.4 0.9   wt% Averages of typical pre-eruptive volatile abundances in magmas of OIB setting. The values reported are typically that of the melt phase (dissolved). These values are taken from Hawaiian Ocean Island Basalt. Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Ocean Island Basalts 1 H       0.2 1   wt% Averages of typical pre-eruptive volatile abundances in magmas of OIB setting. The values reported are typically that of the melt phase (dissolved). Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Ocean Island Basalts 1 H 0.19             Compositional analyses of Ocean Island Basalt obtained by direct sampling of hot gas vents at Kiluaea Volcano 1983. Based on the geology of this region the volatile (Type II Gas) levels are consistent with those of any subducted continental margin. Hydrogen in this particular case is given as HF. Oppenheimer 2004 Symonds et al. 1994
Ocean Island Basalts 1 H 0.1             Compositional analyses of Ocean Island Basalt obtained by direct sampling of hot gas vents at Kiluaea Volcano 1983. Based on the geology of this region the volatile (Type II Gas) levels are consistent with those of any subducted continental margin. Hydrogen in this particular case is given as HCl. Oppenheimer 2004 Symonds et al. 1994
Ocean Island Basalts 1 H 0.622             Compositional analyses of Ocean Island Basalt obtained by direct sampling of hot gas vents at Kiluaea Volcano 1983. Based on the geology of this region the volatile (Type II Gas) levels are consistent with those of any subducted continental margin. Hydrogen in this particular case is given as H2S gas. Oppenheimer 2004 Symonds et al. 1994
Ocean Island Basalts 1 H 0.9025             Compositional analyses of Ocean Island Basalt obtained by direct sampling of hot gas vents at Kiluaea Volcano 1983. Based on the geology of this region the volatile (Type II Gas) levels are consistent with those of any subducted continental margin. Hydrogen in this particular value is given as H2 (Pure Hydrogen Gas Emissions). Oppenheimer 2004 Symonds et al. 1994
Ocean Island Basalts 1 H 0.08             Compositional analyses of Ocean Island Basalt obtained by direct sampling of hot gas vents at Kiluaea Volcano 1918. Based on the geology of this region the volatile (Type I Gas) levels are consistent with those of any subducted continental margin. Hydrogen in this particular case is given as HCl. Oppenheimer 2004 Symonds et al. 1994
Ocean Island Basalts 1 H 0.04             Compositional analyses of Ocean Island Basalt obtained by direct sampling of hot gas vents at Kiluaea Volcano 1918. Based on the geology of this region the volatile (Type I Gas) levels are consistent with those of any subducted continental margin. Hydrogen in this particular case is given as H2S gas. Oppenheimer 2004 Symonds et al. 1994
Ocean Island Basalts 1 H 0.49             Compositional analyses of Ocean Island Basalt obtained by direct sampling of hot gas vents at Kiluaea Volcano 1918. Based on the geology of this region the volatile (Type I Gas) levels are consistent with those of any subducted continental margin. Hydrogen in this particular value is given as H2 (Pure Hydrogen Gas Emissions). Oppenheimer 2004 Symonds et al. 1994
Ocean Island Basalts 1 H 37.09             Compositional analyses of Ocean Island Basalt obtained by direct sampling of hot gas vents at Kiluaea Volcano 1918. Based on the geology of this region the volatile (Type I Gas) levels are consistent with those of any subducted continental margin. Hydrogen in this particular value is given as H2O. Oppenheimer 2004 Symonds et al. 1994
Ocean Island Basalts 16 S 11.84             Compositional analyses of Ocean Island Basalt obtained by direct sampling of hot gas vents at Kiluaea Volcano 1918. Based on the geology of this region the volatile (Type I Gas) levels are consistent with those of any subducted continental margin. Sulfur in this particular case is given as SO2 gas. Oppenheimer 2004 Symonds et al. 1994
Ocean Island Basalts 16 S 0.02             Compositional analyses of Ocean Island Basalt obtained by direct sampling of hot gas vents at Kiluaea Volcano 1918. Based on the geology of this region the volatile (Type I Gas) levels are consistent with those of any subducted continental margin. Sulfur in this particular case is given as S2 gas. Oppenheimer 2004 Symonds et al. 1994
Ocean Island Basalts 16 S 0.309             Compositional analyses of Ocean Island Basalt obtained by direct sampling of hot gas vents at Kiluaea Volcano 1983. Based on the geology of this region the volatile (Type II Gas) levels are consistent with those of any subducted continental margin. Sulfur in this particular case is given as S2 gas. Oppenheimer 2004 Symonds et al. 1994
Ocean Island Basalts 16 S 14.9             Compositional analyses of Ocean Island Basalt obtained by direct sampling of hot gas vents at Kiluaea Volcano 1983. Based on the geology of this region the volatile (Type II Gas) levels are consistent with those of any subducted continental margin. Sulfur in this particular case is given as SO2 gas. Oppenheimer 2004 Symonds et al. 1994
Ocean Island Basalts 16 S       200 1900   ppm Averages of typical pre-eruptive volatile abundances in magmas of OIB setting. The values reported are typically that of the melt phase (dissolved). These values are taken from Hawaiian Ocean Island Basalt. Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Ocean Island Basalts 16 S         3000   ppm Averages of typical pre-eruptive volatile abundances in magmas of OIB setting. The values reported are typically that of the melt phase (dissolved). Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Oldoinyo Lengai Carbonatite 6 C 24.4             Compositional analyses of Carbonatite obtained by direct sampling of hot gas vents at Oldoinyo Lengai Volcano 1999. Based on the geology of this region the volatile levels are consistent with those of any subducted continental margin. Carbon in this particular case is given as CO2. Oppenheimer 2004 Oppenheimer et al. 2002
Oldoinyo Lengai Carbonatite 27 Co 0.0787             Compositional analyses of Carbonatite obtained by direct sampling of hot gas vents at Oldoinyo Lengai Volcano 1999. Based on the geology of this region the volatile levels are consistent with those of any subducted continental margin. Carbon in this particular case is given as CO. Oppenheimer 2004 Oppenheimer et al. 2002
Oldoinyo Lengai Carbonatite 1 H 75.6             Compositional analyses of Carbonatite obtained by direct sampling of hot gas vents at Oldoinyo Lengai Volcano 1999. Based on the geology of this region the volatile levels are consistent with those of any subducted continental margin. Hydrogen in this particular value is given as H2O. Oppenheimer 2004 Oppenheimer et al. 2002
Oldoinyo Lengai Carbonatite 16 S 0.0197             Compositional analyses of Carbonatite obtained by direct sampling of hot gas vents at Oldoinyo Lengai Volcano 1999. Based on the geology of this region the volatile levels are consistent with those of any subducted continental margin. Sulfur in this particular case is given as SO2 gas. Oppenheimer 2004 Oppenheimer et al. 2002
Oversaturated Acid Rocks 17 Cl 1100           ppm Averages of typical pre-eruptive volatile abundances in Dacites and Rhyolites. The values reported are typically of the melt phase (dissolved). This particular value is taken from volatile abundances from Mount Pinatubo 1991. Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Oversaturated Acid Rocks 17 Cl 9000           ppm Averages of typical pre-eruptive volatile abundances in Peralkaline Rhyolites (pantellerites). The values reported are typically of the melt phase (dissolved). Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Oversaturated Acid Rocks 17 Cl 6700           ppm Averages of typical pre-eruptive volatile abundances in Trachytes. The values reported are typically of the melt phase (dissolved). Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Oversaturated Acid Rocks 17 Cl       600 2700   ppm Averages of typical pre-eruptive volatile abundances in Metaluminous Dacites and Rhyolites. The values reported are typically of the melt phase (dissolved). Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Oversaturated Acid Rocks 9 F       200 1500   ppm Averages of typical pre-eruptive volatile abundances in Metaluminous Dacites and Rhyolites. The values reported are typically of the melt phase (dissolved). Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Oversaturated Acid Rocks 9 F 1.5           wt% Averages of typical pre-eruptive volatile abundances in Peralkaline Rhyolites (pantellerites). The values reported are typically of the melt phase (dissolved). Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Oversaturated Acid Rocks 1 H       6 7   wt% Averages of typical pre-eruptive volatile abundances in Dacites and Rhyolites. The values reported are typically of the melt phase (dissolved). This value is for Mount Pinatubo dissolved volatiles from 1991. Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Oversaturated Acid Rocks 1 H       3 7   wt% Averages of typical pre-eruptive volatile abundances in Dacites and Rhyolites. The values reported are typically of the melt phase (dissolved). Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Oversaturated Acid Rocks 1 H 4.6           wt% Averages of typical pre-eruptive volatile abundances in Dacites and Rhyolites. The values reported are typically of the melt phase (dissolved). This value is for Mount St. Helens dissolved volatiles in 1980. Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Oversaturated Acid Rocks 16 S         200   ppm Averages of typical pre-eruptive volatile abundances in Dacites and Rhyolites. The values reported are typically of the melt phase (dissolved). Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
Oversaturated Acid Rocks 16 S 75           ppm Averages of typical pre-eruptive volatile abundances in Dacites and Rhyolites. The values reported are typically of the melt phase (dissolved). This value is for volatiles from Mount Pinatubo 1991. Oppenheimer 2004 Johnson et al. 1993
Wallace & Anderson 2000
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