Session information

[E] Oral

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

[S-IT21] Planetary cores: Structure, formation, and evolution

Sun. May 22, 2022 10:45 AM - 12:15 PM 103 (International Conference Hall, Makuhari Messe)

convener:Hidenori Terasaki(Faculty of Science, Okayama University), convener: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), convener:Riko Iizuka-Oku(Geochemical Research Center, Graduate School of Science, The University of Tokyo), Chairperson: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)

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.

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10:45 AM - 11:00 AM

[SIT21-07] In-situ observations of iron-silicate-water-sulfur system and behaviors of light elements during the Earth’s core-mantle formation

*Riko Iizuka-Oku^1,2, Hirotada Gotou³, Hiroyuki Kagi¹ (1.Geochemical Research Center, Graduate School of Science, The University of Tokyo, 2.Department of Earth and Planetary Sciences, Harvard University, USA, 3.ISSP, The University of Tokyo)

11:00 AM - 11:15 AM

[SIT21-08] The Earth core formation process inferred from phosphorus metal-silicate partitioning

*Nagi Ikuta¹, Naoya Sakamoto², Shoh Tagawa^1,3, Kei Hirose^1,3, Hisayoshi Yurimoto² (1.The University of Tokyo, 2.Hokkaido University, 3.Tokyo Institute of Technology)

11:15 AM - 11:30 AM

[SIT21-09] Wetting ability of liquid Fe–S in solid core during planetesimal core crystallization

*Shiori Matsubara¹, Hidenori Terasaki¹, Takashi Yoshino², Daisuke Yumitori¹, Satoru Urakawa¹ (1.Department of Earth Sciences, Okayama University, 2.Institute for Planetary Materials, Okayama University)

11:30 AM - 11:45 AM

[SIT21-10] Constraint on the condition of core melt segregation in pyroxene mantle of planetary embryo

Takumi Miura², *Hidenori Terasaki¹, Takashi Yoshino³, Matsubara Shiori¹, Osamu Ohtaka², Tadashi Kondo² (1.Department of Earth sciences, Okayama University, 2.Department of Earth and Space science, Osaka University, 3.Institute for Planetary Materials, Okayama University)

11:45 AM - 12:00 PM

[SIT21-11] The oxygen and sulfur enriched Martian big core and Martian dynamo

*Eiji Ohtani¹, William F McDonough^1,2, Takashi Yoshizaki¹ (1.Department of Earth and Planetary Materials Science, Graduate School of Science, Tohoku University, 2.Department of Geology, University of Maryland)

Discussion (12:00 PM - 12:15 PM)