[B-PT23] Decoding the history of Earth: From Hadean to Modern

Mon. May 25, 2015 9:00 AM - 10:45 AM 104 (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(Institute for Research on Earth Evolution, Japan Agency for Marine-Earth Science and Technology), Chair:Shogo Aoki(Graduate School of arts and science, 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

★ [BPT23-01] Splashed Hadean Seawater Hypothesis

*Hidenori GENDA¹, Yuichiro UENO², Tomohiro USUI², Shoji UETA², Julien FORIEL¹, Huiming BAO³, Tao SUN⁴ (1.Earth-Life Science Institute, Tokyo Institute of Technology, 2.Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 3.Louisiana State University, 4.JSC NASA)

9:15 AM - 9:30 AM

[BPT23-02] Melting of Hadean continents and its influences on the environment by Late Heavy Bombardment

*Yuhito SHIBAIKE¹, Takanori SASAKI², Shigeru IDA³ (1.Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2.Earth-Life Science Institute, Tokyo Institute of Technology, 3.Department of Astronomy, Kyoto University)

9:30 AM - 9:45 AM

[BPT23-03] Major element composiiton of the missing reservoir: Implication for the early Earth differentiation

*Nozomi KONDO¹, Takashi YOSHINO², Kyoko MATSUKAGE³, Kenta YOSHIDA⁴, Tetsu KOGISO¹ (1.Guraduate school of Human and Environmental Studies, Kyoto University, 2.Institute for Study of the Earth's Interior, 3.Graduate School of Science, Kobe University, 4.Graduate school of Science, Kyoto University)

9:45 AM - 10:00 AM

[BPT23-04] Searching Hadean zircon based on growth history of the continental crust

*Hikaru SAWADA¹, Shigenori MARUYAMA², Yukio ISOZAKI³, Takafumi HIRATA⁴, Shuhei SAKATA⁴, Yukiyasu TSUTSUMI⁵ (1.Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2.Earth-Life Institute, Tokyo Institute of Technology, 3.Department of Earth Science and Astronomy, the University of Tokyo, 4.Division of Earth and Planetary Sciences, Kyoto University, 5.Department of Geology and Paleontology, National Museum of Nature and Science)

10:00 AM - 10:15 AM

[BPT23-05] Osmium isotope heterogeneity in the Pacific mantle: implications for the evolution of convecting upper mantle

*Akira ISHIKAWA¹, Ryoko SENDA², Katsuhiko SUZUKI², Kenichiro TANI³, Teruaki ISHII⁴ (1.The University of Tokyo, Komaba, 2.JAMSTEC, 3.National Museum of Nature and Science, 4.Fukada Geological Institute)

10:15 AM - 10:30 AM

[BPT23-06] Geology of the Eoarchean (>3.95 Ga) Nulliak supracrustal belt, Labrador, Canada: The oldest evidence for plate tectonics

*Tsuyoshi KOMIYA¹ (1.Department of Astronomy & Earth Sciences, The University of Tokyo, Komaba)

10:30 AM - 10:45 AM

[BPT23-07] A chronological constraint on ancient hydrothermal activity using zircon inclusion ages

*Keiko SATO¹, Shinji YAMAMOTO², Hironobu HYODO³, Hidenori KUMAGAI¹, Takazo SHIBUYA⁴, Tsuyoshi KOMIYA² (1.R&D CSR, JAMSTEC, 2.Graduate School of Arts and Sciences, University of Tokyo, 3.Natural Science Research Center, Okayama University of Sciences, 4.Precambrian Ecosystem Laboratory, JAMSTEC)