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

Mon. May 25, 2015 2:15 PM - 4:00 PM 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:Kentaro Nakamura(Department of Systems Innovation, School of Engineering, 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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2:15 PM - 2:30 PM

[BPT23-14] Three oceanic oxidation events coincided with diversification of early animals after the Snowball Earth

*Kunio KAIHO¹, Atena SHIZUYA¹, Kenji YAMADA¹, Masahiro OBA¹, Zhong-qiang CHEN², Jinnan TONG², Tsuyoshi KOMIYA³, Li TIAN², Paul GORJAN⁴, Satoshi TAKAHASHI³ (1.Tohoku University, 2.China University of Geosciences, 3.University of Tokyo, 4.Washington University)

2:30 PM - 2:45 PM

[BPT23-15] In-situ iron isotope analysis of pyrite and organic carbon/nitrogen isotope ratios from the Middle Proterozoic sediments

*Kazumi YOSHIYA¹, Yusuke SAWAKI¹, Manabu NISHIZAWA², Tsuyoshi KOMIYA³, Takafumi HIRATA⁴, Shigenori MARUYAMA¹ (1.Tokyo Institute of Technology, 2.JAMSTEC, 3.The University of Tokyo, 4.Kyoto University)

2:45 PM - 3:00 PM

[BPT23-16] Lithostratigraphy of mesoproterozoic stratum at Jixian, north China

*Yusuke SAWAKI¹, Hisashi ASANUMA¹ (1.Tokyo Tech)

3:00 PM - 3:15 PM

[BPT23-17] Paleoproterozoic Ocean Floor Reconstruction Project: II Geology of Cape Three Points area in the Ashanti belt of the

*Shoichi KIYOKAWA¹, Takashi ITO², Tetsuji ONOUE³, Minoru IKEHARA⁴, Kosei E. YAMAGUCHI⁵, Kenji HORIE⁶, Kosuke T. GOTO⁷, Satoshi YOSHIMARU¹, Frank NYAME⁸, George TETTEH⁹ (1.Earth and Planetary Science, Kyushu University, 2.Ibaraki Univ. Dep. Education, 3.Kumamoto Univ. Dep. Science, 4.Kochi Univ. Marine core Research, 5.Toho Univ. Dep. Science & NASA Astrobiology Institute, 6.National institute of Polar Research, 7.Geological Survey of Japan, 8.University of Mines and Technology, Tarkwa,, 9.University of Ghana Dep. earth science)

3:15 PM - 3:30 PM

[BPT23-18] The stratigraphy and U-Pb zircon age of the Itapanhoacanga formation, Espinhaco supergroup, Brasil

*Satoshi YOSHIMARU¹, Shoichi KIYOKAWA¹, Yukiyasu TSUTSUMI², Carlos A. Rosiere³ (1.Kyushu University, 2.National Museum of Nature and Science, 3.Federal University of Minas Gerais)

3:30 PM - 3:45 PM

[BPT23-19] Carbon isotope compositions of carbonaceous materials and carbonate from Saglek Block (>3.96 Ga), Labrador, Canada

*Takayuki TASHIRO¹, Akizumi ISHIDA², Masako HORI², Motoko IGISU³, Yuji SANO², Tsuyoshi KOMIYA⁴ (1.Department of Earth and Planetary Science Graduate School of Science The University of Tokyo, 2.Atmosphere and Ocean Research Institute The University of Tokyo, 3.Japan Agency for Marine-Earth Science and Technology, 4.Department of Earth Science & Astronomy Graduate School of Arts and Sciences The University of Tokyo)

3:45 PM - 4:00 PM

[BPT23-20] Experimental hydrothermal alteration of komatiite under CO2-rich condition at 250 Celsius degrees and 500 bars

*Hisahiro UEDA¹, Yusuke SAWAKI¹, Takazo SHIBUYA², Shigenori MARUYAMA¹ (1.Department of Earth and Planetary Science,Tokyo Institute of Technology, 2.JAPAN AGENCY FOR MARIN-EARTH SCIENCE AND TECHNOJOGY)