Hydrogen isotopic composition and volatile contents of quartz-hosted rhyolitic melt inclusions from the early Bishop Tuff
To explore whether hydrogen isotopes can identify the source and modification of water in a silicic magma reservoir, we analyzed D/H ratios and dissolved H2O content of quartz-hosted, rhyolitic glass inclusions from the early Bishop Tuff, a time-honored testing ground for innovative petrologic studies. The rhyolitic inclusions indicate the early Bishop reservoir had δD values ranging from -40 to -60‰ (VSMOW). The rhyolitic melt represents a distinct, largely homogenous isotopic reservoir. When compared to the global record of basaltic glass inclusions, the rhyolitic inclusions preserve an isotopic signature that is most similar to subduction-related mafic melts.
How to cite this dataset:
Befus, K., Walowski, K. J., Hervig, R. L., Cullen, J. T., 2020. Hydrogen isotopic composition and volatile contents of quartz-hosted rhyolitic melt inclusions from the early Bishop Tuff, Version 1.0. Interdisciplinary Earth Data Alliance (IEDA). https://doi.org/10.26022/IEDA/111731.
DOI Creation Date:
Befus, K.S., Walowski, K.J., Hervig, R.L., Cullen, J.T., Hydrogen isotope composition of a large silicic magma reservoir preserved in quartz-hosted glass inclusions of the Bishop Tuff Plinian eruption.Geochemistry, Geophysics, Geosystems, accepted.
Creative Commons Attribution-ShareAlike 4.0 International [CC BY-SA 4.0]
Coverage Scope: Regional (Continents, Oceans)
Geographic Location: North America, USA, California, Long Valley caldera
User Contributed Keyword(s):
Bishop Tuff, Long Valley, hydrogen isotopes
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