Did magma ascent rate control the explosive-effusive transition at the Inyo volcanic chain, California

Research Article| April 01, 2008 Did magma ascent rate control the explosive-effusive transition at the Inyo volcanic chain, California? Jonathan M. Castro; Jonathan M. Castro 1Department of Mineral Sciences, Smithsonian Institution, P.O. Box 37012, NHB-119, Washington, D.C. 20013-7012, USA Search for other works by this author on: GSW Google Scholar James E. Gardner James E. Gardner 2Department of Geological Sciences, University of Texas, 1 University Station C1100, Austin, Texas 78712-0254, USA Search for other works by this author on: GSW Google Scholar Geology (2008) 36 (4): 279–282. https://doi.org/10.1130/G24453A.1 Article history received: 24 Sep 2007 rev-recd: 20 Nov 2007 accepted: 04 Dec 2007 first online: 03 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Jonathan M. Castro, James E. Gardner; Did magma ascent rate control the explosive-effusive transition at the Inyo volcanic chain, California?. Geology 2008;; 36 (4): 279–282. doi: https://doi.org/10.1130/G24453A.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Rhyolitic eruptions often begin explosively and then shift to extrusions of lava. It is widely believed that the style of eruption is dependent on magma flow rate within the conduit, fast ascent leading to explosive eruption and slow ascent favoring effusive behavior. Currently, the velocity of rhyolite magma flowing in a conduit is unknown, and therefore eruption models remain untested against geologic evidence of magma ascent. We show that explosively erupted rhyolite magma from the Inyo volcanic chain ascended slowly (centimeters per second), at same rates as the dome-building phases. We propose that the explosive-effusive transition sub-Plinian rhyolite eruptions is governed by the alleviation of exsolved volatile pressure in the shallow conduit rather than the magma flow rate. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.