Title: Arrival of extremely volatile-rich high-Mg magmas changes explosivity of Mount Etna
Abstract: Research Article| March 01, 2007 Arrival of extremely volatile-rich high-Mg magmas changes explosivity of Mount Etna Vadim S. Kamenetsky; Vadim S. Kamenetsky 1Australian Research Council Centre of Excellence in Ore Deposits and School of Earth Sciences, University of Tasmania, Hobart, Tasmania 7001, Australia Search for other works by this author on: GSW Google Scholar Massimo Pompilio; Massimo Pompilio 2Istituto Nazionale di Geofisica e Vulcanologia-Sezione di Pisa, Via della Faggiola 32 Pisa 56126, Italy Search for other works by this author on: GSW Google Scholar Nicole Métrich; Nicole Métrich 3Laboratoire Pierre Sue, Centre National de la Recherche Scientifique-Commissariat à l'Energie Atomique, CE-Saclay, 91191 Gif sur Yvette, France Search for other works by this author on: GSW Google Scholar Alexander V. Sobolev; Alexander V. Sobolev 4Max-Planck-Institut für Chemie, Postfach 3060, 55020 Mainz, Germany, and Vernadsky Institute of Geochemistry, Moscow 117975, Russia Search for other works by this author on: GSW Google Scholar Dmitry V. Kuzmin; Dmitry V. Kuzmin 5Max-Planck-Institut für Chemie, Postfach 3060, 55020 Mainz, Germany, and Institute of Geology and Mineralogy SB RAS, Novosibirsk 630090, Russia Search for other works by this author on: GSW Google Scholar Rainer Thomas Rainer Thomas 6GeoForschungsZentrum Potsdam, Telegrafenberg B 120, D-14473 Potsdam, Germany Search for other works by this author on: GSW Google Scholar Author and Article Information Vadim S. Kamenetsky 1Australian Research Council Centre of Excellence in Ore Deposits and School of Earth Sciences, University of Tasmania, Hobart, Tasmania 7001, Australia Massimo Pompilio 2Istituto Nazionale di Geofisica e Vulcanologia-Sezione di Pisa, Via della Faggiola 32 Pisa 56126, Italy Nicole Métrich 3Laboratoire Pierre Sue, Centre National de la Recherche Scientifique-Commissariat à l'Energie Atomique, CE-Saclay, 91191 Gif sur Yvette, France Alexander V. Sobolev 4Max-Planck-Institut für Chemie, Postfach 3060, 55020 Mainz, Germany, and Vernadsky Institute of Geochemistry, Moscow 117975, Russia Dmitry V. Kuzmin 5Max-Planck-Institut für Chemie, Postfach 3060, 55020 Mainz, Germany, and Institute of Geology and Mineralogy SB RAS, Novosibirsk 630090, Russia Rainer Thomas 6GeoForschungsZentrum Potsdam, Telegrafenberg B 120, D-14473 Potsdam, Germany Publisher: Geological Society of America Received: 04 Jul 2006 Accepted: 31 Oct 2006 Revision Received: 30 Oct 2007 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2007) 35 (3): 255–258. https://doi.org/10.1130/G23163A.1 Article history Received: 04 Jul 2006 Accepted: 31 Oct 2006 Revision Received: 30 Oct 2007 First Online: 09 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 Vadim S. Kamenetsky, Massimo Pompilio, Nicole Métrich, Alexander V. Sobolev, Dmitry V. Kuzmin, Rainer Thomas; Arrival of extremely volatile-rich high-Mg magmas changes explosivity of Mount Etna. Geology 2007;; 35 (3): 255–258. doi: https://doi.org/10.1130/G23163A.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 The volcanic hazard potential of Mount Etna volcano is currently nourished by long-lasting, powerful eruptions of basaltic magmas coupled with increased seismicity and ground deformation, and the world's largest discharge of volcanic gases. The current evolutionary cycle of Mount Etna activity is consistent with subduction-related chemical modifications of the mantle source. Arrival of a new mantle-derived magma batch beneath the volcano has been hypothesized, but is still elusive among the erupted products. Here we demonstrate petrological and geochemical affinities between the magmas supplying modern eruptions and high-Mg, fall-stratified (FS) basalts ejected violently ∼4 k.y. ago. The FS primitive magmas (∼13 wt% MgO) are characteristically volatile enriched (at least 3.8 wt% H2O and 3300 ppm CO2), and bear a trace element signature of a garnet-bearing, metasomatized source (high Gd/Yb, K/La, U/Nb, Pb/Ce, Ca/Al). They started crystallizing olivine (Fo91), clinopyroxene (Mg# 92.5), and Cr spinel deep in the plumbing system (>5 kbar), contributing to the cumulate piles at depth and to differentiated alkaline basalt and trachybasalt magmas in the shallow conduit. Continuous influx of mantle-derived, volatile-rich magmas, such as those that supplied the FS fallout, provides a good explanation for major compositional and eruptive features of Mount Etna. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
Publication Year: 2007
Publication Date: 2007-01-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 85
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