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Volcanic Glass Heterogeneity: Primary and Secondary Causes, and Uses
From: Kim Berlo <Kim_Berlo@xxxxxxxxx>
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Dear Colleagues
We would like to draw your attention and invite your contribution to the following session at Goldschmidt 2011 (August 14-19th) in Prague:
09h: Volcanic Glass Heterogeneity: Primary and Secondary Causes, and Uses
Volcanic glasses from single eruptions can span a wide range in composition, which recent developments in analytical techniques now allow us to explore and exploit. Chemical variability in glasses can result from primary processes such as crystallisation, assimilation, magma mixing and degassing prior and during eruption. Chemical heterogeneity may, in this case, provide unprecedented information on the timescales of processes occurring during the crucial last moments before eruption. However, chemical variability can also be caused by alteration and weathering, which mars fingerprinting efforts and understanding of pre-eruptive processes, but can tell about post-eruptive storage conditions and duration. This session will address the identification and uses of primary and secondary chemical heterogeneity in volcanic glasses. We welcome contributions using groundmass glasses and/or melt inclusions to document and use variability in natural systems, as well as experimental and numerical models addressing the development and fading of chemical gradients in silicate glasses.
Keynote: Diego Perugini (University of Perugia)
Invited: Hugh Tuffen (Lancaster University)
Convenors: Kim Berlo, Victoria Smith, Olivier Reubi
Abstract deadline April 15th
http://www.goldschmidt2011.org/
Hope to see you in Prague,
Kim, Victoria & Olivier
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