[S-IT22] [EE] Interaction and Coevolution of the Core and Mantle in the Earth and Planets

Mon. May 22, 2017 3:30 PM - 5:00 PM Convention Hall B (International Conference Hall 2F)

convener:Taku Tsuchiya(Geodynamics Research Center, Ehime University), Hidenori Terasaki(Graduate School of Science, Osaka University), Madhusoodhan Satish-Kumar(Department of Geology, Faculty of Science, Niigata University), Tetsuo Irifune(Geodynamics Research Center, Ehime University), John Hernlund(Earth-Life Science Institute, Tokyo Institute of Technology), Eiji Ohtani(Department of Earth and Planetary Materials Science, Graduate School of Science, Tohoku University), Chairperson:Taku Tsuchiya(Geodynamics Research Center, Ehime University)

Recent observational and experimental investigations have significantly advanced our understanding of the structure and constituent materials of the deep Earth. However, even fundamental properties intimately linked with formation and evolution of the planet, such as details of the chemical heterogeneity in the mantle and light elements dissolved in the core, have remained unclear for over 60 years. Seismological evidence has suggested a vigorous convection in the lower mantle, whereas geochemistry has suggested the presence of stable regions there that hold the chemical signature of early Earth. The amounts of radioactive isotopes that act as the heat sources that drive the dynamic behaviors of the deep Earth are also still largely unknown. We provide an opportunity to exchange the achievements and ideas, and encourage the persons who try to elucidate these unresolved mysteries in the Earth and planetary interiors through comprehensive investigations of the interactions between the core and mantle by combining high-pressure and high-temperature experiments, microscale geochemical analysis, high-resolution geophysical observations, geo-neutrino observations and large-scale numerical simulations.

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3:30 PM - 3:45 PM

[SIT22-37] Iron-carbonate interaction in the lower mantle and at the core-mantle boundary

★Invited papers

*Konstantin Litasov¹, Naira Martirosyan¹, Hiroaki Ohfuji², Sergey Lobanov³, Alexander Goncharov³ (1.V.S. Sobolev Institute of Geology and Mineralogy SB RAS, Novosibirsk, Russia, 2.Geodynamic Research Center, Ehime University, Matsuyama, Japan, 3.Geophysical Laboratory, Carnegie Institution of Washington, Washington DC, USA)

3:45 PM - 4:00 PM

[SIT22-38] Composition of the core: Geochemical and mineral physics constraints

*Eiji Ohtani¹, Takanori Sakairi¹, Tatsuya Sakamaki¹, Seiji Kamada², Ryosuke Tanaka¹, Hiroshi Fukui³, Alfred Q.R. Baron⁴ (1.Department of Earth and Planetary Materials Science, Graduate School of Science, Tohoku University, 2.Frontier Research Institute of Interdisciplinary Sciences, Tohoku University, 3.Graduate School of Material Science, University of Hyogo, 4. RIKEN SPring-8 Center)

4:00 PM - 4:15 PM

[SIT22-39] High-P,T Elasticity of Iron-Light Element Alloys

*Taku Tsuchiya¹, Yasuhiro Kuwayama², Miaki Ishii³, Kenji Kawai² (1.Geodynamics Research Center, Ehime University, 2.University of Tokyo, 3.Harvard University)

4:15 PM - 4:30 PM

[SIT22-40] Constraint on composition and size of lunar Fe-Ni-S core

*Hidenori Terasaki¹, Keisuke Nishida², Satoru Urakawa³, Yuta Shimoyama¹, Yuji Higo⁴ (1.Graduate School of Science, Osaka University, 2.Graduate School of Science, The University of Tokyo, 3.Graduate School of Natural Science, Okayama University, 4.JASRI)

4:30 PM - 4:45 PM

[SIT22-41] Thermoelastic properties of iron-carbide melts under high pressure: implication for carbon in the lunar interior

*Yuta Shimoyama¹, Hidenori Terasaki¹, Satoru Urakawa², Yusaku Takubo¹, Tetsu Watanuki³, Akihiko Machida³, Yoshinori Katayama³, Tadashi Kondo¹ (1.Dept. Earth&Space Science, Osaka University, 2.Graduate School of Natural Science and technology, Okayama University,, 3.Natural Institutes for Quantum and Radiological Science and Technology)

4:45 PM - 5:00 PM

[SIT22-42] A textural and chemical view of melting of the Sahara 97072 (EH3) meteorite at 5 GPa and different temperatures

*WEI DU^1,2,3, Vincenzo Stagno^2,3, Hiroaki Ohfuji², Masayuki Nishi^2,3, Tetsuo Irifune^2,3 (1.School of Earth and Space Sciences, Peking University, Beijing 100871, China, 2.Geodynamic Research Center, Ehime University, Matsuyama 790-8577, Japan, 3.Earth-Life Science Institute, Tokyo Institute of Technology, Tokyo 152-8550, Japan)

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