MR14A:
Elasticity, Plasticity, and Microstructures in Planetary Interiors I

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Session ID#: 15939

Session Description:
Knowledge of the elastic properties of Earth's mantle materials is essential for understanding the radial and lateral variations of seismic velocities and seismic anisotropy in the mantle, as well as features like the Large Low Shear Velocity Provinces and complex features in the upper mantle and transition zone. The elastic properties of mantle minerals and melts also provide necessary information for developing models of the internal structure and dynamic behavior of our planet. The improvement of both experimental and computational techniques has recently allowed breakthroughs in elasticity studies. However, many questions remain unanswered about the mechanisms that produce a range of seismic anomalies and discontinuities. This session aims to bring together contributions that emphasize the elastic behavior of mantle materials, as well as related contributions from seismology to inspire collaborative discussions, to provide better understanding of the structure and dynamics of Earth’s mantle from the Moho to the core-mantle boundary.
Primary Convener:  Rebecca A. Fischer, Harvard University, Department of Earth and Planetary Sciences, Cambridge, United States
Conveners:  June K Wicks, Princeton University, Princeton, NJ, United States, Lowell M Miyagi, University of Utah, Department of Geology and Geophysics, Salt Lake City, UT, United States and Nadege Hilairet, CNRS, Paris Cedex 16, France
Chairs:  Nadege Hilairet, CNRS, Paris Cedex 16, France, Rebecca A. Fischer, Harvard University, Department of Earth and Planetary Sciences, Cambridge, United States and June K Wicks, Princeton University, Princeton, NJ, United States
OSPA Liaison:  Nadege Hilairet, CNRS, Paris Cedex 16, France

Cross-Listed:
  • DI - Study of the Earth's Deep Interior
  • S - Seismology
Index Terms:

3909 Elasticity and anelasticity [MINERAL PHYSICS]
3924 High-pressure behavior [MINERAL PHYSICS]
5120 Plasticity, diffusion, and creep [PHYSICAL PROPERTIES OF ROCKS]
5430 Interiors [PLANETARY SCIENCES: SOLID SURFACE PLANETS]

Abstracts Submitted to this Session:

Thermoelasticity of Al- and Fe-bearing MgSiO3 Post-perovskite (161734)
Gaurav Shukla1, Kanchan Sarkar2 and Renata Wentzcovitch1, (1)University of Minnesota Twin Cities, Minneapolis, MN, United States, (2)Columbia University, Applied Physics and Applied Mathematics, New York, NY, United States
Dislocation mobility in ringwoodite and bridgmanite as functions of temperature and water content (Invited) (148518)
Hongzhan Fei, Institute for Study of the Earth's Interior, Okayama University, Tottori, Japan; Bayerisches Geoinstitut, Bayreuth, Germany, Daisuke Yamazaki, Okayama University, Institute for Planetary Materials, Okayama, Japan, Moe Sakurai, Okayama University, Institute for Planetary Materials, Tottori, Japan, Nobuyoshi Miyajima, Bayerisches Geoinstitut, Universitaet Bayreuth, Bayreuth, Germany, Hiroaki Ohfuji, Ehime University, Matsuyama, Japan, Tomoo Katsura, University Bayreuth, Bayerisches Geoinstitut, Bayreuth, Germany and Takafumi Yamamoto, Hiroshima University, Higashi-Hiroshima, Japan
Atomistically-informed polycrystalline simulations: how do MgO polycrystals deform under pressure? (Invited) (127999)
Jonathan Amodeo1, Sylvain Dancette1, Ghun Koh1 and Laurent Delannay2, (1)MATEIS laboratory, INSA-Lyon, Villleurbanne, France, (2)Université Catholique de Louvain, Louvain-La-Neuve, Belgium
Experimental evidence supports mantle partial melting in the asthenosphere (Invited) (118556)
Julien Chantel, Case Western Reserve University, Cleveland, OH, United States, Geeth Manthilake, Université Clermont Auvergne, CNRS, IRD, OPGC, Laboratoire Magmas et Volcans, Clermont-Ferrand Cedex, France, Denis Andrault, University Blaise Pascal Clermont-Ferrand II, Clermont-Ferrand, France, Davide Novella, Lawrence Livermore National Laboratory, Livermore, CA, United States, Tony Yu, The University of Chicago, Center for Advanced Radiation Sources, Chicago, United States and Yanbin Wang, University of Chicago, Chicago, IL, United States
Experimental constraints and theoretical bases for microstructural damage in plate boundary shear zones (163574)
Philip A Skemer, Washington University in St Louis, St. Louis, MO, United States, Andrew J Cross, Washington University in St Louis, St. Louis, United States and David Bercovici, Yale University, Earth & Planetary Sciences, New Haven, CT, United States
Modeling Crystallographic Preferred Orientation of Olivine Polycrystals Deformed in Diffusion Creep Regime, and Implications for Seismic Anistropy in the Upper Mantle. (148564)
Navid Hedjazian and Edouard Kaminski, Institut de Physique du Globe de Paris, Paris, France
Seismically imaging the mantle transition zone with EarthScope’s USArray (Invited) (118361)
Brandon Schmandt, University of New Mexico, Earth and Planetary Sciences, Albuquerque, United States
Constraining Seismic Structure of Upper-Mantle Discontinuities: A New Approach Using High-Frequency Triplication Data (149009)
Miaki Ishii, Harvard University, Department of Earth and Planetary Sciences, Cambridge, MA, United States and Sunyoung Park, University of Chicago, Department of the Geophysical Sciences, Chicago, United States

See more of: Mineral and Rock Physics