H2O, CO2, CI, and gas in Plinian and ash-flow Bishop rhyolite

Research Article| March 01, 1989 H2O, CO2, CI, and gas in Plinian and ash-flow Bishop rhyolite Alfred T. Anderson, Jr.; Alfred T. Anderson, Jr. 1Department of Geophysical Sciences, University of Chicago, 5734 S. Ellis Avenue, Chicago, Illinois 60637 Search for other works by this author on: GSW Google Scholar Sally Newman; Sally Newman 2Division of Geological Sciences, California Institute of Technology, Pasadena, California 91125 Search for other works by this author on: GSW Google Scholar Stanley N. Williams; Stanley N. Williams 1Department of Geophysical Sciences, University of Chicago, 5734 S. Ellis Avenue, Chicago, Illinois 60637 Search for other works by this author on: GSW Google Scholar Timothy H. Druitt; Timothy H. Druitt 1Department of Geophysical Sciences, University of Chicago, 5734 S. Ellis Avenue, Chicago, Illinois 60637 Search for other works by this author on: GSW Google Scholar Christine Skirius; Christine Skirius 1Department of Geophysical Sciences, University of Chicago, 5734 S. Ellis Avenue, Chicago, Illinois 60637 Search for other works by this author on: GSW Google Scholar Edward Stolper Edward Stolper 2Division of Geological Sciences, California Institute of Technology, Pasadena, California 91125 Search for other works by this author on: GSW Google Scholar Geology (1989) 17 (3): 221–225. https://doi.org/10.1130/0091-7613(1989)017<0221:HOCCAG>2.3.CO;2 Article history first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation Alfred T. Anderson, Sally Newman, Stanley N. Williams, Timothy H. Druitt, Christine Skirius, Edward Stolper; H2O, CO2, CI, and gas in Plinian and ash-flow Bishop rhyolite. Geology 1989;; 17 (3): 221–225. doi: https://doi.org/10.1130/0091-7613(1989)017<0221:HOCCAG>2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search nav search search input Search input auto suggest search filter All ContentBy SocietyGeology Search Advanced Search Abstract Infrared spectroscopic (H2O, CO2 and electron microprobe (CI) 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 H2O, CO2 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 CO2-rich bubbles through water-rich magma. Our estimated pressures of gas-saturation range from about 1.6 kbar (Plinian) to 2.3 kbar (ash flow) and accord with geologic evidence for 3 km of magma withdrawal and caldera subsidence. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not currently have access to this article.