************************************************************************************************************
VOLCANO: AGU Session V14 on Conduits and Lava domes
From: Ben Kennedy <ben.kennedy@xxxxxxxxxxxxxxxx>
************************************************************************************************************
Hi Volcano enthusiasts, we would like to draw your attention to an exciting session at the Fall AGU in San Francisco to be convened By Hugh Tuffen, Jon Castro, and Ben Kennedy.
V14: Crystals, Glass, Cracks and Bubbles: Degassing and Crystallisation in Silicic Conduits and Lavas
The degassing and crystallization of magma during ascent and emplacement has profound implications for the mechanisms of both explosive and effusive silicic eruptions. The end product is lava or pumice that contains bubbles, crystals, cracks and glass in varying proportions.
V14: Crystals, Glass, Cracks and Bubbles: Degassing and Crystallisation in Silicic Conduits and Lavas
The degassing and crystallization of magma during ascent and emplacement has profound implications for the mechanisms of both explosive and effusive silicic eruptions. The end product is lava or pumice that contains bubbles, crystals, cracks and glass in varying proportions.
Details of the processes driving these textural changes, their timescales and consequences can be elucidated using textural and geochemical analysis, experimentation and modelling approaches. Key questions to address include how gas escapes from magma in the viscous and brittle regimes, how volatiles resorb and bubbles collapse, how rapidly magma ascends during different styles of activity, how crystallisation affects the ductile/brittle rheology of magma and how gas loss and crystal growth are interrelated. We welcome all contributions addressing these and related topics, especially those that combine natural observations with well-constrained experiments or numerical models.
Invited Authors are
Ed Llewellin
Alison Rust
Jeffrey Johnson
Luca Caricchi
We look forward to your contributions,
Ben, Jon, and Hugh
Ben, Jon, and Hugh
To contribute to the volcano list, send your message to: volcano@xxxxxxxx Please do not send attachments. ==============================================================
