[S-GL22] Frontier research on chronostratigraphic unit boundaries

Fri. May 26, 2023 9:00 AM - 10:15 AM International Conference Room (IC) (International Conference Hall, Makuhari Messe)

convener:Hiroyuki Hoshi(Department of Earth Sciences, Aichi University of Education), Reishi Takashima(Tohoku University Museum, Tohoku University), Junichiro Kuroda(Department of Ocean Floor Geoscience, Atmosphere and Ocean Research Institute, the University of Tokyo), Makoto Okada(Department of Earth Sciences, College of Science, Ibaraki University), Chairperson:Hiroyuki Hoshi(Department of Earth Sciences, Aichi University of Education), Reishi Takashima(Tohoku University Museum, Tohoku University), Junichiro Kuroda(Department of Ocean Floor Geoscience, Atmosphere and Ocean Research Institute, the University of Tokyo), Makoto Okada(Department of Earth Sciences, College of Science, Ibaraki University), Tetsuji Onoue(Department of Earth and Planetary Sciences, Faculty of Science, Kyushu University)

This session aims to share the current knowledge on stratigraphy, geochronology, geochemistry, paleoclimatology, and paleoceanography at or around chronostratigraphic unit boundaries. Geological studies dealing with chronostratigraphic unit boundaries, such as the Permian-Triassic (P-T) and Cretaceous-Paleogene (K-Pg) boundaries, as well as boundaries between systems (periods), series (epochs), stages (ages), and other chronozones (chrons) are welcome. We also welcome studies on global events such as oceanic anoxic events (OAEs), asteroid impacts, and geomagnetic reversals, as well as the lithostratigraphy, sequence stratigraphy, biostratigraphy, chemostratigraphy, magnetostratigraphy, radiometric dating, tectonics, etc. of rock sequences above or below the chronostratigraphic unit boundaries in Japan and elsewhere.

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9:00 AM - 9:15 AM

[SGL22-01] The Carboniferous–Permian boundary in pelagic deep-sea starata of Panthalassa in the North Kitkami Belt

*Shun Muto¹, Satoshi Takahashi², Masafumi MURAYAMA^3,4 (1.Geological Survey of Japan, AIST, 2.Department of Earth and Planetary Sciences, Nagoya University, 3.Faculty of Agriculture and Marine Science, Kochi University, 4.Center for Advanced Marine Core Research, Kochi University)

9:15 AM - 9:30 AM

[SGL22-02] Late Triassic extinction events: recent research progress

★Invited Papers

*Tetsuji Onoue¹, Manuel Rigo² (1.Kyushu Univ., 2.Univ. Padova)

9:30 AM - 9:45 AM

[SGL22-03] The Weissert Event record and radiometric ages of Soma Nakamura Group

*Taiga Tomaru¹, Reishi Takashima², Yuji Orihashi³, Toshiro Yamanaka⁴, Hiroshi Nishi⁵, Azumi Kuroyanagi², Yoshihiro Asahara⁶ (1.Department of Earth Science, Graduate School of Science, Tohoku University, 2.The Center for Academic Resources and Archives Tohoku University Museum , 3.Global Environment and Disaster Prevention Sciences, Graduate School of Science and Technology, Hirosaki University, 4. School of Marine Resource and Environment, Tokyo University of Marine Science and Technology, 5.Institute of Dinosaur Research , Fukui Prefectural University, 6.Department of Earth and Environmental Sciences, Graduate School of Environmental Studies, Nagoya University)

9:45 AM - 10:00 AM

[SGL22-04] Integrated stratigraphy across the Cretaceous/Paleocene boundary in the Shiranuka Hill, Hokkaido, Japan.

*Reishi Takashima¹, Keiichi Hayashi², Junichiro Kuroda⁴, Hayu Ota⁴, Hiroyuki Hoshi³, Yuji Orihashi⁵, Hiroshi Nishi⁶, Toshiro Yamanaka⁸, Ken Sawada⁷, Kazuo Hayashi⁷, Masashi A. Ikeda⁷, Kohei Hosogaya¹, Yoshihiro Asahara⁹ (1.Tohoku University, 2.Hokkaido Research Organization, 3.Aichi University of Education, 4.The University of Tokyo, 5.Hirosaki University, 6.Fukui Prefectural University, 7.Hokkaido University, 8.Tokyo University of Marine Science and Tehnology, 9.Nagoya University)

10:00 AM - 10:15 AM

[SGL22-05] Osmium isotope stratigraphy of the Cretaceous-Paleogene boundary in the Nemuro Group

*Hayu Ota¹, Junichiro Kuroda¹, Akira Ishikawa², Katsuhiko Suzuki³, Reishi Takashima⁴ (1.Department of Ocean Floor Geoscience, Atmosphere and Ocean Research Institute, the University of Tokyo, 2.Department of Earth and Planetary Sciences, Tokyo institute of Technology, 3.Submarine Resources Research Center, Japan Agency for Marine-Earth Science and Technology, 4.Tohoku University Museum, Tohoku University)

Session information