[B-PT07] Biotic history and its relation to the Earth history

Wed. May 25, 2016 9:00 AM - 10:30 AM 303 (3F)

Convener:*Isao Motoyama(Department of Earth and Environmental Sciences, Yamagata University), Takao Ubukata(Division of Geology & Mineralogy, Department of Earth & Planetary Sciences, Kyoto University), Kazuyoshi Moriya(Department of Earth Sciences, Faculty of Education and Integrated Arts and Sciences, Waseda University), Chair:Isao Motoyama(Department of Earth and Environmental Sciences, Yamagata University), Takao Ubukata(Division of Geology & Mineralogy, Department of Earth & Planetary Sciences, Kyoto University), Kazuyoshi Moriya(Department of Earth Sciences, Faculty of Education and Integrated Arts and Sciences, Waseda University)

The Biotic History session covers all aspects of ancient life and the history of biosphere through the geologic time. The study of ancient life is essential for unveiling mysteries of our planet earth. It also provides evidence for evolution of oceans, continents and island arcs. Modern progress in this field has been enhanced by interdisciplinary collaboration with allied sciences, such as paleoceanography and evolutionary biology. Our session intends to be a hub of communication amongst all earth scientists studying the biosphere; we welcome biological and biogeochemical approaches toward the understanding of the history of life.

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9:00 AM - 9:15 AM

[BPT07-01] Reconstruction of Permian-Triassic ocean redox conditions based on laminae preservation and pyrite framboids from the pelagic Panthalassic Ocean

Akane Mizutani¹, *Satoshi Takahashi¹, Jun Ishida¹, Shinji Yamamoto¹, Masayuki Ikeda², Kazumi Ozaki³, Megumi Saitoh⁴, Nozomi Suzuki⁴, Ryuji Tada¹ (1.Department of Earth and Planetary Science, University of Tokyo, 2.Shizuoka University, 3.Atmosphere and Ocean Research Institute.University of Tokyo, 4.Division of Paleoenvironment and Paleoecology Department of Geology and Paleontology National Museam of Nature and Science)

9:15 AM - 9:30 AM

[BPT07-02] Redox conditions of late Early Triassic oceanic region around the South Kitakami Microcontinent

*Kazuko Yoshizawa¹, Satoshi Takahashi¹, Masayuki Ehiro², Takanobu Tsuihiji¹, Shun Muto¹, Takayuki Tashiro¹, Tsuyoshi Iizuka¹, Masato Tanaka¹, Yoshio Takahashi¹ (1.Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, 2.The Tohoku University Museum, Tohoku University)

9:30 AM - 9:45 AM

[BPT07-03] Paleoenvironmental reconstruction by organic matter analyses of Triassic-Jurassic highly mature sediments from North America and Inuyama, Japan.

*Yuki Tateshita¹, Ken Sawada¹, Masayuki Ikeda² (1.Department of Natural History Sciences, Faculty of Science, Hokkaido University, 2.Faculty of Science, Shizuoka University)

9:45 AM - 10:00 AM

[BPT07-04] Environmental change and morphological variability in mid-Cretaceous planktic foraminifer, Muricohedbergella delrioensis

*Eri Takahashi¹, Kazuyoshi Moriya¹ (1.Dep. Earth Sciences, Waseda University)

10:00 AM - 10:15 AM

[BPT07-05] Evaluation of ‘paleo’ red-tide during the mid-Cretaceous Oceanic Anoxic Event (OAE) 2.

*Takuto Ando¹, Ken Sawada¹, Reishi Takashima², Hiroshi Nishi² (1.Department of Natural History Sciences, Faculty of Science, Hokkaido University, 2.Tohoku University Museum, Tohoku University)

10:15 AM - 10:30 AM

[BPT07-06] Draught in the low latitudes and cooling by global soot aerosols led to the mass extinction at the Cretaceous-Paleogene boundary

*Kunio Kaiho¹, Naga Oshima², Kouji Adachi², Yukimasa Adachi², Takuya Mizukami¹, Megumu Fujibayashi³, Ryosuke Saito¹ (1.Graduate School of Science, Tohoku University, 2.Meteorological Research Institute, Tsukuba, Japan, 3.Ecological Engineering Laboratory, Tohoku University)