MR51A:
Rheology of Earth's Mantle II Small-Scale Observations

Friday, 19 December 2014: 8:00 AM-10:00 AM
Chairs:  Lowell M Miyagi, University of Utah, Salt Lake City, UT, United States, Lars N Hansen, University of Oxford, Oxford, United Kingdom, Anthony Brian Watts, University of Oxford, Oxford, 0X1, United Kingdom and Nadege Hilairet, University of Lille 1, Villeneuve d'Ascq, France
Primary Conveners:  Lowell M Miyagi, University of Utah, Salt Lake City, UT, United States
Co-conveners:  Lars N Hansen, University of Oxford, Oxford, United Kingdom, Anthony Brian Watts, Univ Oxford, Oxford, United Kingdom and Nadege Hilairet, University of Lille 1, Villeneuve d'Ascq, France
OSPA Liaisons:  Lowell M Miyagi, University of Utah, Salt Lake City, UT, United States

Abstracts Submitted to this Session:

8:00 AM
MR51A-01
 
The Relative Strength of the (Fe,Mg)2SiO4 Polymorphs
Simon A Hunt, University College London, London, United Kingdom
8:15 AM
MR51A-02
 
Grain-Boundary Plasticity and the Strength of the Upper Mantle
Paul Raterron, Caroline Bollinger, Nadege Hilairet and Sebastien Merkel, University of Lille 1, Villeneuve d'Ascq, France
8:30 AM
MR51A-03
 
Silicon Grain Boundary Diffusion in Forsterite and Implications to Upper Mantle Rheology
Hongzhan Fei1,2, Sanae Koizumi3, Naoya Sakamoto4, Minako Hashiguchi5, Hisayoshi Yurimoto4, Katharina Marquardt2, Nobuyoshi Miyajima2, Daisuke Yamazaki1 and Tomoo Katsura2, (1)Institute for Study of the Earth's Interior, Okayama University, Tottori, Japan, (2)Bayerisches Geoinstitut, Universitaet Bayreuth, Bayreuth, Germany, (3)Earthquake Research Institute, University of Tokyo, Tokyo, Japan, (4)University of Hokkaido, Isotope Imaging Laboratory, Sapporo, Japan, (5)Hokkaido University, Division of Earth and Planetary Sciences, Sapporo, Japan
8:45 AM
MR51A-04
 
Low strength of the shallow mantle lithosphere: Data and geodynamical consequences
Sylvie Aude Demouchy1, Andrea Tommasi1 and Patrick Cordier2, (1)Géosciences Montpellier, Montpellier Cedex 05, France, (2)University of Lille 1, Villeneuve d'Ascq, France
9:00 AM
MR51A-05
 
Effective Stress Sensitivity of the Viscoplastic Upper Mantle, and Related Deformation Mechanisms at the Grain Scale
Olivier Castelnau1, Fabrice Detrez2, Patrick Cordier3, Sebastien Merkel4 and Paul Raterron3, (1)CNRS, Paris Cedex 16, France, (2)Universite Marne la Vallee, Marne la Vallee, France, (3)University of Lille 1, Villeneuve d'Ascq, France, (4)Université de Lille, Villeneuve d'Ascq, France
9:15 AM
MR51A-06
 
Pressure and temperature dependence of dislocation mobility in the [100](010) and [001](010) slip systems in olivine
Tomoo Katsura1, Lin Wang1, Stephan Blaha1, Zsanett Pintér1, Stella Chariton1, Robert J Farla2, Takaaki Kawazoe3 and Nobuyoshi Miyajima2, (1)University of Bayreuth, Bayreuth, Germany, (2)Bayerisches Geoinstitut, Universitaet Bayreuth, Bayreuth, Germany, (3)Bayreuth University, Bayreuth, Germany
9:30 AM
MR51A-07
 
Synchrotron in-situ deformation experiments of bridgmanite + ferropericlase aggregates under the shallow lower mantle conditions
Jennifer Girard1, George Amulele1, Robert J Farla2, Anwar Mohiuddin1 and Shun-ichiro Karato1, (1)Yale University, Geology and Geophysics, New Haven, CT, United States, (2)Bayerisches Geoinstitut, Universitaet Bayreuth, Bayreuth, Germany
9:45 AM
MR51A-08
 
Stress heterogeneities in anisotropic materials - their effect on dislocation fields and post-deformational recrystallization: Insights from combined experiments and numerical simulations of polycrystalline ice
Sandra Piazolo1, Maurine Montagnat2, Verity Borthwick3, Lynn Evans1, Albert Griera4, Fanny Grennerat2, Herve Moulinec5 and John Wheeler6, (1)Macquarie University, Deparement of Earth and Planetary Sciences, Sydney, Australia, (2)LGGE Laboratoire de Glaciologie et Géophysique de l’Environnement, Saint Martin d'Hères, France, (3)Stockholm University, Geological Science, Stockholm, Sweden, (4)Universitat Autònoma de Barcelona, Geology, Barcelona, Spain, (5)Laboratoire de Mecanique et Acoustique, Marseille, France, (6)University of Liverpool, Liverpool, United Kingdom
 
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