H                         2                         O, CO                         2                         , Cl, and gas in Plinian and ash-flow Bishop rhyolite

A. T. Anderson; S. Newman; S. N. Williams; T. H. Druitt; C. Skirius; E. Stolper

doi:10.1130/0091-7613(1989)017<0221:HOCCAG>2.3.CO

H ₂ O, CO ₂ , Cl, and gas in Plinian and ash-flow Bishop rhyolite

A. T. Anderson, S. Newman, S. N. Williams, T. H. Druitt, C. Skirius, E. Stolper

Arizona State University

Research output: Contribution to journal › Article

206 Scopus citations

Abstract

Infrared spectroscopic (H ₂ O and CO ₂ ) and electron microprobe (Cl) analyses of glass inclusions in Plinian and ash-flow quartz phenocrysts from the Bishop Tuff reveal the preeruption concentrations of volatiles in separate parts of the body of magma. There is an inverse relation between H ₂ O and CO ₂ that can be explained 1) by closed-system, gas-saturated crystallization of parent magma to yield Plinian magma + (lost) crystals or 2) by the rise of CO ₂ -rich bubbles through water-rich magma. Our estimated pressures of gas-saturation range from about 1.6kbar (Plinian) to 2.3kbar (ash flow) and accord with geologic evidence for 3km of magma withdrawal and caldera subsidence. -Authors

Original language	English (US)
Pages (from-to)	221-225
Number of pages	5
Journal	Geology
Volume	17
Issue number	3
DOIs	https://doi.org/10.1130/0091-7613(1989)017<0221:HOCCAG>2.3.CO
State	Published - Jan 1 1989

ASJC Scopus subject areas

Geology

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Anderson, A. T., Newman, S., Williams, S. N., Druitt, T. H., Skirius, C., & Stolper, E. (1989). H ₂ O, CO ₂ , Cl, and gas in Plinian and ash-flow Bishop rhyolite Geology, 17(3), 221-225. https://doi.org/10.1130/0091-7613(1989)017<0221:HOCCAG>2.3.CO

H ₂ O, CO ₂ , Cl, and gas in Plinian and ash-flow Bishop rhyolite . / Anderson, A. T.; Newman, S.; Williams, S. N.; Druitt, T. H.; Skirius, C.; Stolper, E.

In: Geology, Vol. 17, No. 3, 01.01.1989, p. 221-225.

Research output: Contribution to journal › Article

Anderson, AT, Newman, S, Williams, SN, Druitt, TH, Skirius, C & Stolper, E 1989, ' H ₂ O, CO ₂ , Cl, and gas in Plinian and ash-flow Bishop rhyolite ', Geology, vol. 17, no. 3, pp. 221-225. https://doi.org/10.1130/0091-7613(1989)017<0221:HOCCAG>2.3.CO

Anderson AT, Newman S, Williams SN, Druitt TH, Skirius C, Stolper E. H ₂ O, CO ₂ , Cl, and gas in Plinian and ash-flow Bishop rhyolite Geology. 1989 Jan 1;17(3):221-225. https://doi.org/10.1130/0091-7613(1989)017<0221:HOCCAG>2.3.CO

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