Mon. May 26, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

[E] Poster
| B (Biogeosciences )
| B-PT Paleontology

[B-PT03] Biomineralization, Geochemistry, and Environmental Studies

5:15 PM - 7:15 PM

[BPT03-P02] Analysis of Amino Acids Preserved in Miocene Fossil Shark tooth from Wajima, Japan, for Estimation of Trophic Levels

*Ayaka Shimizu¹, Robert Jenkins¹, Takashi Hasegawa¹, Yukiko Kozaka¹ (1.Kanazawa University)

Thu. May 29, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

[J] Poster
| M (Multidisciplinary and Interdisciplinary)
| M-IS Intersection

[M-IS14] Paleoclimatology and paleoceanography

5:15 PM - 7:15 PM

[MIS14-P03] Automatic sedimentary organic matter (Palynofacies) analysis using AI to deciphering terrestrial vegetation changes during the Cretaceous Ocean Anoxic Events

*Mihoko Kawabe¹, Hitoshi Hasegawa¹, Takuya Itaki², YOSHIKI ASANO¹, U Heimhofer ³, N Ichinorov ⁴, Takashi Hasegawa⁵, Keitaro Yamada⁶, Yoichi Usui⁵, Aki Sakuma⁷, Takuto Ando⁸ (1.Kochi University, 2.AIST, 3.Hannover University, 4.Mongolian Academy of Sciences, 5.Kanazawa University, 6.Ritsumeikan University, 7.University of Tokyo, 8.Akita University)

5:15 PM - 7:15 PM

[MIS14-P07] Carbon isotope stratigraphy and signal of volcanic activity across Oceanic Anoxic Event 1a (OAE1a) from southern high latitude

*Mayuko Kamimura¹, Takashi Hasegawa², Eun Young Lee³, Seunghee Han⁴, Hakwon Jeong⁴ (1.Graduate School of Natural Science and Technology, Kanazawa University, 2.Faculty of Geoscience and Civil Engineering, Institute of Science and Engineering, Kanazawa University, 3.Department of Geology, University of Vienna, Austria, 4.School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea)

5:15 PM - 7:15 PM

[MIS14-P21] Spatio-temporal paleoenvironmental change in the Indian Ocean during Cretaceous OAEs and Paleogene PETM via µXRF analysis of ODP/IODP cores (Preliminary results)

*Ryudai Kotobuki¹, Hitoshi Hasegawa¹, Masafumi MURAYAMA¹, Takashi Hasegawa⁴, Erika Tanaka¹, Kazutaka Yasukawa³, Hironao Matsumoto², Junichiro Kuroda³ (1.Kochi University , 2.Tsukuba University, 3.University Tokyo, 4.Kanazawa University)

Fri. May 30, 2025 3:30 PM - 5:00 PM Convention Hall (CH-A) (International Conference Hall, Makuhari Messe)

[J] Oral
| M (Multidisciplinary and Interdisciplinary)
| M-IS Intersection

[M-IS14] Paleoclimatology and paleoceanography

3:45 PM - 4:00 PM

[MIS14-27] Variety of Cretaceous alkenones as product of haptophytes: perspective for understanding high latitude paleotemperature during Cretaceous

*Takashi Hasegawa¹, Yukiko Kozaka¹, Tsukika Takahashi², Masashi A. Ikeda¹, Hiromichi Komiya^2,3 (1.Faculty of Geoscience and Engineering, Institute of Science and Engineering, Kanazawa University, 2.Graduate School of Natural Science and Technology. Kanazawa University, 3.Now at TEPCO)

Mon. May 26, 2025 1:45 PM - 3:15 PM 201A (International Conference Hall, Makuhari Messe)

[J] Oral
| M (Multidisciplinary and Interdisciplinary)
| M-IS Intersection

[M-IS17] New frontiers in geology

2:15 PM - 2:30 PM

[MIS17-03] Geochemical and isotopic characteristics of the red shale layer deposited during the end-Cenomanian at the Exmouth Plateau, southern Indian Ocean

*Hironao Matsumoto¹, Hitoshi Hasegawa², Kotaro Shirai³, Takashi Hasegawa⁴, Erika Tanaka⁵, Kazutaka Yasukawa⁶, Junichiro Kuroda³ (1.Institute of Life and Evironmental Sciecnces, University of Tsukuba, 2.Department of Global Environmental and Disaster Prevention, Faculty of Science and Technology, Kochi University, 3.Atmosphere and Ocean Research Institute, The University of Tokyo, 4.Faculty of Geosciences and Civil Engineering, Institute of Science and Engineering, Kanazawa University, 5.Marine Core Research Institute, Kochi University, 6.Frontier Research Center for Energy and Resources, School of Engineering, The University of Tokyo)

Takashi Hasegawa

Speaker, Author, Co-Author