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- W2034609091 abstract "Research Article| August 01, 2002 Experimental rapid alteration of basaltic glass: Implications for the origins of atmospheric particulates Francesca R. Spadaro; Francesca R. Spadaro 1Laboratoire Interuniversitaire des Systèmes Atmosphériques, Université Paris XII—Val de Marne, France Search for other works by this author on: GSW Google Scholar Roger A. Lefèvre; Roger A. Lefèvre 1Laboratoire Interuniversitaire des Systèmes Atmosphériques, Université Paris XII—Val de Marne, France Search for other works by this author on: GSW Google Scholar Patrick Ausset Patrick Ausset 1Laboratoire Interuniversitaire des Systèmes Atmosphériques, Université Paris XII—Val de Marne, France Search for other works by this author on: GSW Google Scholar Geology (2002) 30 (8): 671–674. https://doi.org/10.1130/0091-7613(2002)030<0671:ERAOBG>2.0.CO;2 Article history received: 23 Oct 2001 rev-recd: 01 Apr 2002 accepted: 12 Apr 2002 first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Francesca R. Spadaro, Roger A. Lefèvre, Patrick Ausset; Experimental rapid alteration of basaltic glass: Implications for the origins of atmospheric particulates. Geology 2002;; 30 (8): 671–674. doi: https://doi.org/10.1130/0091-7613(2002)030<0671:ERAOBG>2.0.CO;2 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 Glassy microspherules collected from the plume of Etna volcano show a surprising compositional variability with SiO2 from 48 to 90 wt%, despite a very homogeneous basaltic source magma (SiO2 = 48%). This same variability is also observed in individual microspherules from their inner to outer parts. The most plausible hypothesis concerning these compositional variabilities is the interaction of the microspherules with the volcanic gases inside the crater prior to their atmospheric dispersal. In order to study this compositional variability we experimentally exposed basaltic glass to volcanic gases at Etna. The resulting glass composition documents a fundamental alteration mechanism, involving an apparent leaching process that can rapidly form nearly pure silica. Because microspherules erupted directly into the air from lava fountains remain unaltered, the duration of microspherules within a gas plume can explain the chemical variability of glass alteration. A major implication for the origin of glassy atmospheric particulates is that chemical compositions cannot be used as a reliable indicator of their source (e.g., meteoric, volcanic, anthropogenic). You do not have access to this content, please speak to your institutional administrator if you feel you should have access." @default.
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- W2034609091 title "Experimental rapid alteration of basaltic glass: Implications for the origins of atmospheric particulates" @default.
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- W2034609091 doi "https://doi.org/10.1130/0091-7613(2002)030<0671:eraobg>2.0.co;2" @default.
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