Sulfur Variations in Glasses from Volcanic Rocks: Effect of Melt Composition on Sulfur Solubility
Abstract
A worldwide data set of major element and sulfur analyses of undegassed lavas, pumices, and melt inclusions from 14 volcanic locations was selected to investigate the compositional effects on sulfur solubility in magmas. We utilized analyses on calc-alkaline, alkaline, and tholeiitic rocks, with a range of 3400 ppm S variation. There is a strong correlation between chemical composition and the sulfur concentration: the less silicic and the more alkaline the rocks are, the more dissolved sulfur they can carry. Also, sulfur concentration is higher in rocks that represent less polymerized melts. Elemental correlations between FeO and S, well-defined for tholeiites, do not hold for alkaline melts. The compositional effects are at least as important as the better-known pressure, temperature, and f(O_2) dependencies.
Additional Information
© 1994 V.H. Winston & Son, Inc. This research was supported by the Earth Science Section of the National Science Foundation, grant EAR-9303967. We thank Malcolm Rutherford and Gary Ernst for their constructive comments and criticisms of an earlier version of this paper. Caltech Division of Geological and Planetary Sciences contribution number 5518.Additional details
- Eprint ID
- 64962
- Resolver ID
- CaltechAUTHORS:20160302-110711851
- EAR-9303967
- NSF
- Created
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2016-03-02Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field
- Caltech groups
- Division of Geological and Planetary Sciences
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- Caltech Division of Geological and Planetary Sciences
- Other Numbering System Identifier
- 5518