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SUMMARY:Feedbacks between deformation and melts in the upper mantle - Andr
 ea  Tommasi (CNRS (Centre national de la recherche scientifique)\; Univers
 ité de Montpellier)
DTSTART:20160218T100000Z
DTEND:20160218T110000Z
UID:TALK64719@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:Co-authors: Katherine Higgie		(CNRS & Universite Montpellier\,
  France)\, Veronique Le Roux		(WHOI\, USA)\, Vincent Soustelle		(Universit
 y Wuhan\, China)\, Virginie Baptiste		(CNRS & Universite Montpellier\, Fra
 nce)\, Alain Vauchez		(CNRS & Universite Montpellier\, France)\, Jean Loui
 s Bodinier		(CNRS & Universite Montpellier\, France)<span><br><span><br>Ex
 periments and theoretical considerations predict feedbacks between deforma
 tion and melts\, namely strain localization controlled by the presence of 
 melts and melt focusing controlled by deformation. Yet\, peridotite massif
 s and mantle xenoliths\, which record deformation and melt transport throu
 gh the shallow mantle (lithosphere and lithosphere-asthenosphere boundary)
 \, feature a wide variety of relations between melts and deformation. Thes
 e relations range from strong feedbacks between deformation and melt distr
 ibution to absence of any relation between the two processes. We will pres
 ent an overview of the different types of relations between deformation an
 d melts observed in the field (km to cm scale) and in thin sections (mm sc
 ale) and highlight the questions these observations bring.</span></span>
LOCATION:Seminar Room 1\, Newton Institute
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