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VOLCANO: Goldschmidt 2011 Session: Timescales of Magma Evolution, Degassing, and Ascent Through The Crust
From: "Mark Reagan" <mark-reagan@xxxxxxxxx>
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Dear Colleagues,
We invite contributions to session 09e: “Timescales of Magma Evolution, Degassing, and Ascent Through The Crust” at the Goldschmidt 2011 meeting August 14-19 in Prague. The keynote speaker will be Ken Sims of the University of Wyoming.
Session description - The timescales of magmatic processes in the crust range over several orders of magnitude: from days or less for degassing and magma mixing/mingling to potentially hundreds of thousands of years for cooling and crystallisation of a magma body. Investigating the links between evolving magma compositions, volatile exsolution, and the style and timing of volcanic eruptions requires precise chronology for some of the shortest geological timescales. Significant breakthroughs in investigating these timescales have occurred recently because of more focused attention and significant technological advances. In this session we welcome new insights on the timing of degassing (bubble growth, gas segregation and ascent) and differentiation (crystallisation, recharge and assimilation) of magmas in the crust derived from U-series disequilibria (on whole-rock samples or minerals), ion microprobe U-Th/Pb in single crystals, and diffusion modeling of chemical zonation.
Please note that abstract submission is now open and ends on 15th April. We look forward to your contribution!
Sincerely,
Heather Handley and Mark Reagan
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