Sakasegawa Formation, Group
Geology
Group: Sakasegawa
Formations: Fukami (1), Itchoda (2), Sakasegawa (1)
Members: unnamed (1)
Lithologies: "shale" (1), siltstone (1), sandstone (2)
Paleoenvironments: marine indet. (2), coastal indet. (2)
Age range: Late/Upper Eocene or 37.71000 to 33.90000 Ma