MR54A:
Physics, Chemistry, and Petrology of Earths Deep Mantle and Core II

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Session ID#: 34538

Session Description:
Recently, geophysical observations have revealed that the Earth’s deep mantle and core are more complex than previously thought. At same time, advances in experimental and analytical techniques now enable the routine investigation of chemical reactions between planetary materials under high pressure and temperature (P-T) conditions exceeding Earth's core-mantle boundary. In this session, we focus on the physics, chemistry, and petrology of the Earth’s deep mantle and core at very high P-T to better understand fundamental phenomena in planetary evolution, including magma ocean crystallization, bulk core compositions, the growth of Earth's inner core, maintaining dynamos, partial melting in the lower-most mantle, the deep transport and sequestration of volatiles, and the potential properties of terrestrial exoplanets. Topics include, but are not limited to, phase relations, thermodynamics, elasticity, EOS, crystal chemistry, and transport and rheological properties. We also welcome contributions from seismology, geodynamics, and geochemistry to provide a unified view of deep Earth.
Primary Convener:  Rebecca A. Fischer, Harvard University, Cambridge, MA, United States
Conveners:  Zhixue Du, Geophysical Laboratory of the Carnegie Institution for Science, Washington, United States, Ryosuke Sinmyo, Tokyo Institute of Technology, Earth-Life Science Institute, Tokyo, Japan and Zhicheng Jing, Case Western Reserve University, Cleveland, United States
Chairs:  Rebecca A. Fischer, Harvard University, Cambridge, MA, United States, Zhixue Du, Geophysical Laboratory of the Carnegie Institution for Science, Washington, United States, Ryosuke Sinmyo, Earth-Life Science Institute, Meguro, Japan and Zhicheng Jing, Case Western Reserve University, Cleveland, United States
OSPA Liaison:  Rebecca A. Fischer, Harvard University, Cambridge, MA, United States
Index Terms:

3909 Elasticity and anelasticity [MINERAL PHYSICS]
3919 Equations of state [MINERAL PHYSICS]
3924 High-pressure behavior [MINERAL PHYSICS]
3954 X-ray, neutron, and electron spectroscopy and diffraction [MINERAL PHYSICS]

Abstracts Submitted to this Session:

Rheological properties of bridgmanite based on deformation experiments (Invited) (223832)
Noriyoshi Tsujino1, Daisuke Yamazaki2, Takashi Yoshino2, Moe Sakurai2, Yuji Higo3 and Yoshinori Tange3, (1)Japan Synchrotron Radiation Research Institute, Hyogo, Japan, (2)Okayama University, Institute for Planetary Materials, Tottori, Japan, (3)Japan Synchrotron Radiation Research Institute, Kouto, Japan
Phase Behavior and Equations of State of the Actinide Oxides (263711)
Chidester Bethany1, Olivia Pardo2, Wendy R Panero3, Rebecca A. Fischer4, Elizabeth Colette Thompson1, Dion L Heinz5, Clemens Prescher6, Vitali B Prakapenka7 and Andrew Campbell5, (1)University of Chicago, Chicago, United States, (2)University of Chicago, Geophysical Sciences, Chicago, United States, (3)Ohio State University, School of Earth Sciences, Columbus, OH, United States, (4)Harvard University, Cambridge, MA, United States, (5)University of Chicago, Chicago, IL, United States, (6)University of Freiburg, Center for Advanced Radiation Sources, Freiberg, Germany, (7)The University of Chicago, Center for Advanced Radiation Sources, Chicago, United States
The Effect of Pressure on Iron Speciation in Silicate Melts at a Fixed Oxygen Fugacity: The Possibility of a Redox Profile Through a Terrestrial Magma Ocean (Invited) (210639)
Katherine Armstrong1, Daniel J Frost2, Catherine A McCammon3, David C Rubie4 and Tiziana Boffa Ballaran3, (1)University of California Davis, Davis, CA, United States, (2)University Bayreuth, Bayerisches Geoinstitut, Bayreuth, Germany, (3)University of Bayreuth, Bayerisches Geoinstitut, Bayreuth, Germany, (4)Bayerisches Geoinstitut, University of Bayreuth, Bayreuth, Germany
Ab Initio Predictions of K, He and Ar Partitioning Between Silicate Melt and Liquid Iron Under High Pressure (237952)
Zhihua Xiong, Taku Tsuchiya and Takashi T, Ehime University, Matsuyama, Japan
Composition of the low seismic velocity E' layer at the top of Earth's core (Invited) (235650)
James Badro, Université Paris Cité, Institut de Physique du Globe de Paris, CNRS, Paris, France and John Peter Brodholt, University of Oslo, Centre of Earth Evolution and Dynamics, Oslo, Norway

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