MR32A:
Atomic to Planetary Scales: Multiscale Understanding of Planetary Dynamics II


Session ID#: 8326

Session Description:
The atomic scale underlies our physical understanding of many material properties, e.g. elasticity, and deformation processes, such as diffusion of point defects and movement of dislocations. The collective organisation of these fundamental processes leads to direct links with larger scales; such as crystal aggregates. The response of aggregates to even larger scale process like convective flow provides a link to planetary dynamics. The geophysical and geochemical observables provide constraints on large-scale dynamics that span from the extreme conditions of the planetary interior to the surface conditions. This session focuses on the understanding of physical and chemical processes at a wide range of PT conditions. Contributions from experimental, modelling, sample measurements and large-scale observations are welcome.
Primary Convener:  David Mainprice, University of Montpellier & CNRS, Geosciences, Montpellier, France
Conveners:  Katharina Marquardt, Bayerisches Geoinstitut, Universitaet Bayreuth, Bayreuth, Germany, Shun-ichiro Karato, Yale University, Earth and Planetary Sciences, New Haven, CT, United States and George R Helffrich, Tokyo Institute of Technology, Earth-Life Science Institute, Tokyo, Japan
Chairs:  David Mainprice, Geosciences Montpellier & Université de Montpellier, Montpellier Cedex 05, France and Katharina Marquardt, Bayerisches Geoinstitut, Universitaet Bayreuth, Bayreuth, Germany
OSPA Liaison:  Katharina Marquardt, Bayerisches Geoinstitut, Universitaet Bayreuth, Bayreuth, Germany

Cross-Listed:
  • DI - Study of the Earth's Deep Interior
  • S - Seismology
  • T - Tectonophysics
  • V - Volcanology, Geochemistry and Petrology
Index Terms:

0545 Modeling [COMPUTATIONAL GEOPHYSICS]
3630 Experimental mineralogy and petrology [MINERALOGY AND PETROLOGY]
5120 Plasticity, diffusion, and creep [PHYSICAL PROPERTIES OF ROCKS]
8124 Earth's interior: composition and state [TECTONOPHYSICS]

Abstracts Submitted to this Session:

How Point Defects and Dislocations Drive Flow in the Deep Mantle (Invited) (60241)
Patrick Cordier1, Francesca Boioli2, Philippe Carrez3, Karine Gouriet2, Pierre Hirel2, Antoine Kraych2 and Sebastian Ritterbex2, (1)University of Lille 1 & CNRS, Unité Matériaux et Transformations, Villeneuve d'Ascq, France, (2)University of Lille 1, Villeneuve d'Ascq, France, (3)University of Lille, Villeneuve d'Ascq, France
Experimental investigation of grain-scale microstructure evolution during olivine-wadsleyite phase transformation under “dry” conditions (63481)
Anwar Mohiuddin, Yale University, Geology and Geophysics, New Haven, CT, United States and Shun-ichiro Karato, Yale University, Earth and Planetary Sciences, New Haven, CT, United States
The stability of Al,Fe-bearing phase H and a new pyrite-type hydroxide at high pressures (Invited) (61192)
Masayuki Nishi1,2, Yasuhiro Kuwayama1, Jun Tsuchiya1 and Tetsuo Irifune3,4, (1)Ehime University, Geodynamics Research Center, Matsuyama, Japan, (2)Earth-Life Science Institute, Meguro, Tokyo, Japan, (3)Geodynamics Research Center, Matsuyama, Japan, (4)Ehime University, Geodynamics Research Center, Ehime, Japan
Combined micro and macro geodynamic modelling of mantle flow: methods, potentialities and limits. (59967)
Manuele Faccenda, Università di Padova, Dipartimento di Geoscienze, Padova, Italy
Crystallographic-preferred-orientation of (Mg,Fe)SiO3-bridgmanite : implications for the mantle dynamics in the lower mantle (77293)
Noriyoshi Tsujino, Japan Synchrotron Radiation Research Institute, Hyogo, Japan; Yale University, Geology & Geophysics, New Haven, CT, United States, Yu Nishihara, Ehime University, Matsuyama, Japan, Daisuke Yamazaki, Okayama University, Institute for Planetary Materials, Okayama, Japan, Yusuke Seto, Kobe University, Faculty of Science, Kobe, Japan, Yuji Higo, Japan Synchrotron Radiation Research Institute, Kouto, Japan and Eiichi Takahashi, Tokyo Institute of Technology, Tokyo, Japan
Defect segregation and migration at Mg2SiO4 forsterite grain boundaries: A first-principles study (58516)
Dipta B Ghosh, Louisiana State University, School of Electrical Engineering and Computer Science, Baton Rouge, LA, United States, Suraj K Bajgain, Louisiana State University, Geology and Geophysics, Baton Rouge, LA, United States and Bijaya B Karki, Louisiana State University, School of Electrical Engineering and Computer Science, Department of Geology & Geophysics, Center for Computation and Technology, Baton Rouge, LA, United States
Volatiles (H, He, Ar) in olivine grain boundaries (Invited) (59467)
Sylvie Aude Demouchy, CNRS & Univ. Montpellier, Géosciences Montpellier, Montpellier, France and Pete Burnard, CNRS, Paris Cedex 16, France
Mg2SiO4 Forsterite Grain Boundary Structures and Self-diffusion from Classical Molecular Dynamics Simulations (77991)
Johannes Wagner, Deutsches GeoForschungsZentrum, Potsdam, Germany, Omar Adjaoud, Darmstadt University of Technology, Darmstadt, Germany, Katharina Marquardt, Bayerisches Geoinstitut, Universitaet Bayreuth, Bayreuth, Germany and Sandro Jahn, University of Cologne, Institute of Geology and Mineralogy, Cologne, Germany
The Identity of Hydrous Defects Controlling the Rheology of Olivine (Invited) (86420)
Ulrich Faul1, Emmanuel Charles David2, Christopher J Cline II3, Andrew Berry3 and Ian Jackson4, (1)Massachusetts Institute of Technology, Earth Atmospheric and Planetary Sciences, Cambridge, MA, United States, (2)University College London, Department of Earth Sciences, London, United Kingdom, (3)Australian National University, Canberra, Australia, (4)Australian National University, Research School of Earth Sciences, Canberra, ACT, Australia

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