Kita-ama Formation

Geology

Group: Izumi

Members: unnamed (8)

Lithologies: not reported (2), mudstone (6)

Paleoenvironments: marine indet. (7), submarine fan (1)

Age range: base of the Late/Upper Campanian to the top of the Early/Lower Maastrichtian or 83.60000 to 66.00000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Late/Upper Campanian83.6 - 72.2Japan (176807 176808 176809)
Early/Lower Maastrichtian72.2 - 66.0Japan (176810 176811)
Early/Lower Maastrichtian72.2 - 66.0Japan (Hyogo) (119014 119015 176812)