Dear all,
Together with Simon Turner, we are convening a session "28. FLUID
DEFORMATION ROCK INTERACTIONS AND MELT EXTRACTION IN THE DEEP CRUST AND
MANTLE" at the IMA meeting in Edinburgh, September 1-6, 2002.
http://www.minersoc.org/pages/meetings/IMA2002.html
Many existing models for melt migration and interaction are based on porous
flow implying, or assuming, slow transport and maximum opportunity for
equilibration with the surrounding matrix. However, there is growing
evidence for rapid melt transport within the mantle which needs to be
confirmed and, if correct, appropriate modifications of melt flow models
implemented. Models assessing thermal and rheological aspects of crustal
deformation have generally considered only conductive cooling and failed to
solve the role of fluid production and circulation on the
ductile-to-brittle evolution of major shear zones. However, there is
increasingly strong evidence for episodic and short-lived fluid production
controlling drastic advective heat extraction and the embrittlement of
ductile shear zones for a wide range of pressure and temperature
conditions. This session aims to bring together experts on fluid,
deformation, rock interactions and melt extraction in the deep crust and
mantle to debate these issues, to compare the approaches developed by
mantle and crustal communities and to identify future research directions.
The deadline for the submission of Abstracts to the IMA meeting is 30th of
March, that is next week!
We look forward to seeing as many of you as possible at Edinburgh.
Best Regards
Pascal
Pascal Philippot
Laboratoire de Géosciences Marines
CNRS, Institut de Physique du Globe de Paris
T26-E3, Case 89, 4 place Jussieu
75252 Paris Cedex 05
France
Tel : 33-(0)1 44 27 71 42
Fax : 33-(0)1 44 27 39 11
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