Spherulite crystallization induces Fe - redox redistribution in silicic melt 1 2
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چکیده
Spherulite crystallization induces Fe-redox redistribution in silicic melt 1 2 Jonathan M. Castro 1* , Elizabeth Cottrell 1 , Hugh Tuffen 2 , Amelia Logan 1 , and Katherine 3 A. Kelley 3 4 5 1 Department of Mineral Sciences, Smithsonian Institution, 10 th and Constitution Ave. 6 NW, Washington, DC 20560 7 8 2 Department of Environmental Science, Lancaster University, LA1 4YQ, UK 9 10 3 Graduate School of Oceanography, University of Rhode Island, Narragansett, RI 02882 11 12 * Corresponding author: email: [email protected]; phone: 202-633-1810; fax: 202-35713 2476 14 15 Abstract 16 17 Rhyolitic obsidians from Krafla volcano, Iceland, record the interaction between mobile 18
منابع مشابه
Spherulite crystallization induces Fe-redox redistribution in silicic melt
Rhyolitic obsidians from Krafla volcano, Iceland, record the interaction between mobile hydrous species liberated during crystal growth and the reduction of ferric iron in the silicate melt. We performed synchrotron μ-FTIR and μ-XANES measurements along a transect extending from a spherulite into optically distinct colorless and brown glass zones. Measurements show that the colorless glass is e...
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تاریخ انتشار 2010