[B-CG04] Decoding the history of the Earth-like planets: From their birth to the present

[BCG04-P16] Paleoenvironmental variations recorded by biomarkers in coal beds of the Cretaceous Hakobuchi Formation, Hokkaido, Japan

*Keishiro Sakurai¹, Yuki Tateshita¹, Ken Sawada^1,2 (1. Graduate School of Science, Hokkaido University, 2. Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University)

Keywords:Hakobuchi Formation, biomarker, paleoenvironment, environmental event, Campanian