Session information

[E] Oral

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

[S-IT18] Planetary cores: Structure, formation, and evolution

Fri. May 26, 2023 1:45 PM - 3:00 PM 102 (International Conference Hall, Makuhari Messe)

convener:Riko Iizuka-Oku(Geochemical Research Center, Graduate School of Science, The University of Tokyo), Hidenori Terasaki(Faculty of Science, Okayama University), Eiji Ohtani(Department of Earth and Planetary Materials Science, Graduate School of Science, Tohoku University), William F McDonough(Department of Earth Science and Research Center for Neutrino Science, Tohoku University, Sendai, Miyagi 980-8578, Japan), Chairperson:Hidenori Terasaki(Faculty of Science, Okayama University), Riko Iizuka-Oku(Geochemical Research Center, Graduate School of Science, The University of Tokyo)

There are fundamental links between the formation and evolution of planets and their satellites to that of their cores, both in terms of magnetic field generation and chemical and physical structures. Defining properties of cores and core materials are therefore important for understanding their internal structures, evolution, and thermal profile. Recent advances in experimental and theoretical studies provide new insights into the Earth's cores and the cores of other terrestrial bodies. We seek to understand the nature and role of light elements in the early history of planets and better define their current state. Recent, on-going and future space missions have and will continue to obtain data on the internal structure of terrestrial planets (e.g., Mars and Mercury) and planet-satellite systems. We welcome presentations on recent advances on the physical and chemical properties of cores and discussions regarding the latest views of their formation and evolution. We welcome contributions from mineral/rock physics, geophysics, geochemistry, geodynamics, and planetary science. We also welcome papers stimulating an interdisciplinary collaboration relating to establishment of the Study of Earth Deep Interior (SEDI)-Japan community. The Commission of Physics of Minerals of the International Mineralogical Association (CPM-IMA) sponsors this session.

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1:45 PM - 2:00 PM

[SIT18-01] Hadean to Eoarchean stagnant lid tectonics tracked by the paleomagnetism of zircons

*John Anthony Tarduno^1,2,3, Rory D. Cottrell¹, Richard K. Bono⁴, Francis Nimmo⁵, Hirokuni Oda⁶ (1.Department of Earth and Environmental Sciences, University of Rochester, Rochester, USA, 2.Department of Physics and Astronomy, University of Rochester, Rochester, USA, 3.Laboratory for Laser Energetics, University of Rochester, Rochester, NY, 14623, USA, 4.Department Earth, Ocean and Atmospheric Science, Florida State University, Tallahassee, FL 32306, USA , 5.Department of Earth and Planetary Sciences, University of California – Santa Cruz, Santa Cruz, CA, USA, 6.Geological Survey of Japan, National Institute of Advanced Science and Technology, Tsukuba, Ibaraki, 305-8567, Japan)

2:00 PM - 2:15 PM

[SIT18-02] Core evolution in the presence of a basal magma ocean

★Invited Papers

*Amy Ferrick¹, Jun Korenaga¹ (1.Yale University Department of Earth and Planetary Sciences)

2:15 PM - 2:30 PM

[SIT18-03] Impurity resistivity of the Earth’s inner core

*Hitoshi Gomi^1,2, Kei Hirose^1,2 (1.The University of Tokyo, 2.Tokyo Institute of Technology)

2:30 PM - 2:45 PM

[SIT18-04] Sound velocity measurement of B2 Fe-Ni-Si alloys at high pressure and high temperature

*Daijo Ikuta^1,2, Eiji Ohtani², Hiroshi Fukui^3,4, Tatsuya Sakamaki², Izumi Mashino¹, Daisuke Ishikawa^3,4, Alfred Q. R. Baron^3,4 (1.Institute for Planetary Materials, Okayama University, 2.Department of Earth Science, Tohoku University, 3.JASRI, 4.RIKEN)

2:45 PM - 3:00 PM

[SIT18-05] First-principles calculations and neutron diffraction measurements on hydrogenation of FeS at high-pressure conditions

*Takano Masahiro¹, Hiroyuki Kagi¹, Yuichiro Mori¹, Sho Kakizawa², Asami Sano-Furukawa³, Taku Tsuchiya⁴ (1.Graduate School of Science, University of Tokyo, 2.Japan Synchrotron Radiation Research Institute, 3.J-PARC center, Japan Atomic Energy Agency, 4.Geodynamics Research Center, Ehime University)