[B-PT05] Decoding the history of Earth: From Hadean to Modern

Wed. May 25, 2016 9:00 AM - 10:30 AM 105 (1F)

Convener:*Tsuyoshi Komiya(Department of Earth Science & Astronomy Graduate School of Arts and Sciences The University of Tokyo), Yasuhiro Kato(Department of Systems Innovation, Graduate School of Engineering, University of Tokyo), Katsuhiko Suzuki(Research and Development Center for Submarine Resources, Japan Agency for Marine-Earth Science and Technology), Chair:Tsuyoshi Komiya(Department of Earth Science & Astronomy Graduate School of Arts and Sciences The University of Tokyo)

The latest results of Earth's evolution and geological processes through 4.6 billion years from Hadean to Modern, based on various approaches including fieldworks, chemical analyses, experiments and computer simulation, will be presented. In this session, we aim to discuss and understand causal relationships and interplay among the evolution of Earth's deep interior, changes in the surface environments, and development and evolution of life. Wide-ranging topics are accepted.

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9:00 AM - 9:15 AM

[BPT05-01] The progress of research on REY-rich mud within the Minamitorishima EEZ

*Yasuhiro Kato^1,2,3, Koichiro Fujinaga^3,1, Kentaro Nakamura^1,2, Kazutaka Yasukawa^1,3, Junichiro Ohta¹, Yutaro Takaya^4,1, Koichi Iijima², Shiki Machida^2,1, Tatsuo Nozaki^2,1, Jun-Ichi Kimura², Katsuhiko Suzuki², Hikaru Iwamori^2,5 (1.Department of Systems Innovation, Graduate School of Engineering, University of Tokyo, 2.Japan Agency for Marine-Earth Science and Technology, 3.Chiba Institute of Technology, 4.Department of Resources and Environmental Engineering School of Creative Science and Enginerring, Waseda University, 5.Tokyo Institute of Technology)

9:15 AM - 9:30 AM

[BPT05-02] Distribution of highly/extremely REY-rich mud layers in the southern part of the Minamitorishima EEZ: Insight from major and trace element geochemistry

*Kentaro Nakamura¹, Kazutaka Yasukawa¹, Koichiro Fujinaga¹, Yasuhiro Kato^1,2,3 (1.Department of Systems Innovation, School of Engineering, The University of Tokyo, 2.Frontier Research Center for Energy and Resources (FRCER), School of Engineering, The University of Tokyo, 3.Japan Agency for Marine-Earth Science and Technology (JAMSTEC))

9:30 AM - 9:45 AM

[BPT05-03] Distribution of extremely REY-rich mud in the southern part of the Minamitorishima EEZ

*Koichiro Fujinaga^1,2, Kazutaka Yasukawa^2,1, Shiki Machida^3,2, Tatsuo Nozaki^3,2, Yutaro Takaya^4,2, Junichiro Ohta², Kazutaka Oya², Daiki Niikuma⁴, Yoshiro Nishio⁵, Yuka Masaki³, Yoichi Usui³, Satoru Haraguchi³, Koichi Iijima³, Hiroshi Amakawa³, Katsuhiko Suzuki³, Kentaro Nakamura^2,3, Yasuhiro Kato^2,3,1, MR15-E02 Leg.2 cruise members (1.Chiba Institute of Technology, 2.Department of Systems Innovation, School of Engineering, University of Tokyo, 3.Japan Agency for Marine-Earth Science and Technology, 4.Department of Resources and Environmental Engineering School of Creative Science and Enginerring, Waseda University, 5.Research and Education Faculty, Kochi University)

9:45 AM - 10:00 AM

[BPT05-04] Geochemical independent components constituting deep-sea sediments within the Minamitorishima EEZ

*Kazutaka Yasukawa^1,2, Kentaro Nakamura¹, Koichiro Fujinaga^2,1, Junichiro Ohta^3,1, Hikaru Iwamori^3,4, Yasuhiro Kato^1,2,3 (1.School of Engineering, The University of Tokyo, 2.Chiba Institute of Technology, 3.JAMSTEC, 4.Department of Earth and Planetary Sciences, Tokyo Institute of Technology)

10:00 AM - 10:15 AM

[BPT05-05] Evidence from the Acasta zircons for consistent occurrence of magmas with moderately elevated d¹⁸O throughout the Eoarchean

*Takayuki Ushikubo¹, Tsuyoshi Iizuka², Michael J. Spicuzza³, John W. Valley³ (1.Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology, 2.University of Tokyo, 3.University of Wisconsin-Madison)

10:15 AM - 10:30 AM

[BPT05-06] Hadean detrital zircons in the Jack Hills metaconglomerate, Western Australia: Implications for Hadean Earth tectonics

*Shinji Yamamoto¹, Tsuyoshi Komiya², Tsuyoshi Iizuka², Takazo Shibuya³, Kenneth D Collerson⁴, Shuhei Sakata⁵, Hideyuki Obayashi⁵, Takafumi Hirata⁴, Yukio Isozaki⁵, Shigenori Maruyama⁶ (1.Yohohama National University, 2.The University of Tokyo, 3.JAMSTEC, 4.Queensland University, 5.Kyoto University, 6.Tokyo Institute of Technology)