Japan Geoscience Union Meeting 2015

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International Session (Oral)

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

[S-IT06] Early Earth - from accumulation to formation -

Mon. May 25, 2015 11:00 AM - 11:45 AM 303 (3F)

Convener:*Tatsuya Sakamaki(Department of Earth Science, Tohoku University), Akio Suzuki(Department of Earth and Planetary Materials Science, Faculty of Science, Tohoku University), Seiji Kamada(Graduate school of Science, Tohoku University), Bjorn Mysen(Geophysical Laboratory, Carnegie Inst. Washington), Chair:Tatsuya Sakamaki(Department of Earth Science, Tohoku University)

Prof. Eiji Ohtani is among the earliest leaders of deep earth mineralogy, geophysics and geochemistry, and remains so to this day. Central themes of his career, and the focus of this session, are experimental study of high temperature/pressure mineralogy, geophysics and geochemistry, of terrestrial and extraterrestrial materials (meteorites), which he deploys to model formation and evolution of the interior of the Earth and terrestrial planets. These include partial melting of deep silicate earth, element partitioning, role of hydrous circulation of water and hydrogen in the early deep Earth, and core/mantle equilibria together with equation-of-state of silicate mantle and metal core materials.

This session aims to bring together high-pressure/-temperature experiment on physics and chemistry of deep Earth materials, natural observation, and theoretical modeling within the principal subject areas of "Early Earth" research emphasizing;

(1) Shock events: discover of high pressure minerals in shocked meteorites
(2) Magma ocean: melting behavior of Earth and planetary materials and properties of melts at high pressures and temperatures
(3) Core formation: mineralogy, geochemistry, and physical properties of the core and core-mantle boundary

11:33 AM - 11:36 AM

[SIT06-P02] Jadeite in shocked meteorites: various textures and formation processes

3-min talk in an oral session

*Shin OZAWA1, Masaaki MIYAHARA2, Eiji OHTANI1, Yoshinori ITO1, Akio SUZUKI1, Makoto KIMURA3, Olga N. Koroleva4, Konstantin Litasov5, Nikolay P. Pokhilenko5 (1.Department of Earth Science, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan, 2.Department of Earth and Planetary Systems Science, Graduate School of Science, Hiroshima University,, 3.Faculty of Science, Ibaraki University, Mito 310-8512, Japan, 4.Institute of Mineralogy, UB RAS, Miass, 456317, Russia, 5.V. S. Sobolev Institute of Geology and Mineralogy, SB RAS, Novosibirsk, 630090, Russia)

11:36 AM - 11:39 AM

[SIT06-P04] The effect of Ni and C on sound velocity of liquid Fe at high pressure

3-min talk in an oral session

Soma Kuwabara1, *Hidenori TERASAKI1, Yuta Shimoyama1, Keisuke Nishida2, Yuji Higo3, Yusaku Takubo1, Yuki Shibazaki4, Masaki Tahara4, Mako Igarashi4, Tatsuya Sakamaki4, Yoshinori Tange3, Tadashi Kondo1 (1.Department of Earth and Space Science, Osaka University, 2.Department of Earth and Planetary Science, The University of Tokyo, 3.Japan Synchrotron Radiation Research Institute, 4.Department of Earth and Planetary Materials Science, Tohoku University)

11:42 AM - 11:45 AM

[SIT06-P06] Sound velocity measurements of solid iron under high pressure and high temperature using an ultrasonic method

3-min talk in an oral session

*Yuki SHIBAZAKI1, Keisuke NISHIDA2, Yuji HIGO3, Mako IGARASHI4, Masaki TAHARA4, Tatsuya SAKAMAKI4, Hidenori TERASAKI5, Yuta SHIMOYAMA5, Souma KUWABARA5, Yusaku TAKUBO5, Eiji OHTANI4 (1.Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, 2.Department of Earth and Planetary Science, The University of Tokyo, 3.Japan Synchrotron Radiation Research Institute, 4.Department of Earth and Planetary Material Sciences, Tohoku University, 5.Department of Earth and Space Science, Osaka University)