Hawk Shale Formation

Geology

Members: unnamed (3)

Lithologies: "siliciclastic" (1), "shale" (2)

Paleoenvironments: marine indet. (3)

Age range: Late/Upper Tithonian or 145.06000 to 143.10000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Oxfordian - Valanginian161.5 - 132.6USA (California) (185399)
Late/Upper Tithonian145.06 - 143.1USA (California) (185724 185761)