[1oral111-17] T4.［Topic Session］History of the Earth

Sun. Sep 4, 2022 1:30 PM - 3:30 PM oral room 2 (Build. 14, 101)

Chiar:Takuto Ando, Daisuke Kuwano

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1:30 PM - 2:00 PM

[T4-O-11] （Invited）Paleoecological changes in marine benthos during the Mesozoic: Ichnological evidence

【ハイライト講演】

*Kentaro IZUMI¹ (1. Faculty & Graduate School of Education, Chiba University)

世話人よりハイライトの紹介：中生代は海洋プランクトンの多様性が変革した時代であり，当時の海洋ベントスの行動生態にも大きな影響をもたらした．本講演では，生痕化石を用いたアプローチにおいて最前線で研究に取り組まれている泉健太郎氏に，硬組織を持たない海洋ベントスの行動生態について，最近の研究動向もふまえてご紹介いただく．生痕化石研究から得られる重要な知見は，地球生命がたどった進化の軌跡の解明に繋がるだろう．※ハイライトとは

2:00 PM - 2:15 PM

[T4-O-12] Reconstruction of fungal flora changes by fungal palynomorph analysis in the sediments deposited during the Cretaceous Oceanic Anoxic Events

*Masashi A IKEDA¹, Ken SAWADA², Takuto ANDO³, Reishi TAKASHIMA⁴, Hiroshi NISHI⁵ (1. Graduate School of Science, Hokkaido University, 2. Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University, 3. Estuary Research Center, Shimane University, 4. The Center for Academic Resources and Archives, The Tohoku University Museum, Tohoku University, 5. Institute of Dinosaur Research, Fukui Prefectural University)

2:15 PM - 2:30 PM

[T4-O-13] The Review of Late Cretaceous of East Asia Continental margin of Hinterland and The impact of Hinterland uplift on the Forearc Basin Sediments

*Jumpei SAIGAN¹ (1. Yamaguchi university)

2:30 PM - 2:45 PM

[T4-O-14] Development of a lutetium-hafnium radiometric dating for pelagic brown clay

*Junichiro Ohta^1,2,3, Jun-Ichi Kimura³, Qing Chang³, Takashi Miyazaki³, Vaglarov Bogdan Stefanov³, Yasuhiro Kato^1,2,3 (1. The University of Tokyo, 2. Chiba Institute of Technology, 3. Japan Agency for Marine-Earth Science and Technology (JAMSTEC))

2:45 PM - 3:00 PM

[T4-O-15] Spatangoida fossils from middle Miocene Tanabe Group in the Wakayama Prefecture, Japan.

*Masaaki OHARA¹ (1. Wakayama Prefectural Museum of Natural History)

3:00 PM - 3:15 PM

[T4-O-16] Reconstruction of paleoenvironmental changes based on the planktic foraminiferal assemblages in the upper Pliocene to lower Pleistocene Tentokuji and Sasaoka Formations distributed in the Masayamazawa area, northern part of Akita Prefecture

*Makoto YAMASAKI¹, Yuki MUKAE², Noki NEMOTO³, Minoru IKEHARA⁴ (1. Akita University, 2. JAPAN GAS ENERGY CORPORATION, 3. Hirosaki University, 4. Kochi University)

3:15 PM - 3:30 PM

[T4-O-17] Dimorphic life cycle through transverse division in burrowing hard coral Deltocyathoides orientalis

*Asuka SENTOKU¹, Keisuke SHIMIZU², Tsubasa NAKA¹, Yuki Tokuda³ (1. Faculty of ScienceUniversity of the Ryukyus, , 2. Graduate School of Agricultural and Life Sciences, The University of Tokyo, 3. Faculty of Environmental Studies, Tottori University of Environmental Studies)

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