International Session (Oral)

Symbol S (Solid Earth Sciences) » S-IT Science of the Earth's Interior & Techtonophysics

[S-IT04] Rheology of Earth's Interior

Thu. May 28, 2015 2:15 PM - 4:00 PM 106 (1F)

Convener:*Tomohiro Ohuchi(Geodynamics Research Center, Ehime University), Shun-ichiro Karato(Yale University, Department of Geology and Geophysics), Katsuyoshi Michibayashi(Institute of Geosciences, Shizuoka University), Chair:Noriyoshi Tsujino(Institute for Study of the Earth's Interior, Okayama University)

Recently, rheological properties of minerals, which form the interior of the Earth, have been understood. We need to revisit the dynamics of the Earth based on recent results, and we seek to formulate future directions of the study of rheology. We welcome contributions on rheological properties (i.e., ductile/semi-brittle/plastic flow, seismic anisotropy and attenuation, and so on) of the lithosphere, asthenosphere, and core of the Earth, from a broad variety of disciplines including mineral and rock physics, geology, geodynamics and any other relevant fields. Topics related to transportation properties of materials in the interior of the Earth are also welcomed.

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2:15 PM - 2:30 PM

★ [SIT04-06] Anisotropic viscosity of olivine aggregates: A laboratory, field, and numerical approach

*Lars N. Hansen¹, Clinton CONRAD², Jessica WARREN³, David KOHLSTEDT⁴ (1.University of Oxford, 2.University of Hawaii, 3.Stanford University, 4.University of Minnesota)

2:30 PM - 2:45 PM

★ [SIT04-07] Evolution of the rheological and microstructural properties of olivine aggregates during dislocation creep under hydrous

*Miki TASAKA¹, Mark Zimmerman¹, David Kohlstedt¹ (1.University of Minnesota)

2:45 PM - 3:00 PM

[SIT04-08] Synthesis and deformation experiments on polycrystalline olivine

*Kosuke YABE¹, Takehiko HIRAGA¹ (1.Earthquake Research Institute, The University of Tokyo)

3:00 PM - 3:15 PM

★ [SIT04-09] In situ deformation of eclogite at high pressure and temperature

*Robert FARLA¹, Anja ROSENTHAL¹, Sylvain PETITGIRARD¹, Caroline BOLLINGER¹, Takaaki KAWAZOE¹, Daniel FROST¹ (1.Bayerisches Geoinstitut, Universitat Bayreuth, Universitats str. 30, 95447 Bayreuth, Germany)

3:15 PM - 3:30 PM

[SIT04-10] Grain boundary sliding as the major deformation mechanism of olivine in Earth's upper mantle

*Tomohiro OHUCHI¹, Takaaki KAWAZOE², Yuji HIGO³, Ken-ichi FUNAKOSHI⁴, Akio SUZUKI⁵, Takumi KIKEGAWA⁶, Tetsuo IRIFUNE¹ (1.Geodynamics Research Center, Ehime University, 2.Bayerisches Geoinstitut, University of Bayreuth, 3.Japan Synchrotron Radiation Institute, 4.Research Center for Neutron Science and Technology, 5.Graduate School of Science, Tohoku University, 6.High Energy Accelerator Research Organization)

3:30 PM - 3:45 PM

[SIT04-11] Observations of grain- to multi-grain-scale deformation of mineral aggregates deformed by diffusion creep

Genta MARUYAMA¹, *Takehiko HIRAGA¹ (1.The University of Tokyo)

3:45 PM - 4:00 PM

[SIT04-12] Microstructure and growth-kinetics of forsterite reaction rim under high pressure

*Yu NISHIHARA¹, Genta MARUYAMA² (1.Geodynamics Research Center, Ehime University, 2.Earthquake Research Institute, University of Tokyo)