[S-GL27] Geologic structure and tectonic history of East Asia and Japanese Islands

[SGL27-P06] Carbon isotope stratigraphy of the Hiraiso Formation, Upper Cretaceous Nakaminato Group in the Hitachinaka City, Ibaraki Prefecture, Japan

*Aoto Sato¹, Makoto Okada¹, Minoru Ikehara² (1. Ibaraki University, 2. Kochi University)

Keywords:Carbon isotope stratigraphy, Upper Cretaceous, Campanian, Nakaminato Group