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Rapid magma ascent recorded by water diffusion profiles in mantle olivine

2006; Geological Society of America; Volume: 34; Issue: 6 Linguagem: Inglês

10.1130/g22386.1

1943-2682

Sylvie Demouchy, Steven D. Jacobsen, Fabrice Gaillard, Charles R. Stern,

earthquake and tectonic studies

Research Article| June 01, 2006 Rapid magma ascent recorded by water diffusion profiles in mantle olivine Sylvie Demouchy; Sylvie Demouchy 1Bayerisches Geoinstitut, Universität Bayreuth, D-95440 Bayreuth, Germany, and Institut für Geowissenschaften, Universität Tübingen, D-72074 Tübingen, Germany, and Lunar and Planetary Institute, 3600 Bay Area Blvd., Houston, Texas 77058, USA Search for other works by this author on: GSW Google Scholar Steven D. Jacobsen; Steven D. Jacobsen 2Bayerisches Geoinstitut, Universität Bayreuth, D-95440 Bayreuth, Germany, and Carnegie Institution of Washington, Geophysical Laboratory, 5251 Broad Branch Rd. NW, Washington, District of Columbia 20015, USA Search for other works by this author on: GSW Google Scholar Fabrice Gaillard; Fabrice Gaillard 3Bayerisches Geoinstitut, Universität Bayreuth, D-95440 Bayreuth, Germany, and Institut des Sciences de la Terre d'Orléans, Université d'Orléans, 1A rue de la Ferollerie, F-4507 Orléans Cedex, France Search for other works by this author on: GSW Google Scholar Charles R. Stern Charles R. Stern 4Department of Geological Sciences, University of Colorado–Boulder, Boulder, Colorado 80309, USA Search for other works by this author on: GSW Google Scholar Geology (2006) 34 (6): 429–432. https://doi.org/10.1130/G22386.1 Article history received: 01 Nov 2005 rev-recd: 09 Jan 2006 accepted: 12 Jan 2006 first online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share MailTo Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation Sylvie Demouchy, Steven D. Jacobsen, Fabrice Gaillard, Charles R. Stern; Rapid magma ascent recorded by water diffusion profiles in mantle olivine. Geology 2006;; 34 (6): 429–432. doi: https://doi.org/10.1130/G22386.1 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 Mechanisms and rates of magma ascent play a critical role in eruption dynamics but remain poorly constrained phenomena. Water, dissolved in mantle minerals as hydrogen and partitioned into the magma during ascent, may provide clues to quantifying magma ascent rates prior to eruption. We determined the dehydration profiles in olivine crystals from peridotite mantle xenoliths within the Pali-Aike alkali basalt from Patagonia, Chile. The results demonstrate that the amount of water stored in the uppermost mantle has likely been underestimated due to water loss during transport. Using experimental diffusion data for hydrogen, we estimate that the xenoliths reached the surface from 60–70 km depth in several hours, a surprisingly rapid rise comparable to ascent rates for kimberlite magmas. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.