Oldman Formation

Geology

Group: Belly River

Members: unnamed (123), Comrey Sandstone (1), Lower (7), Middle (2), Upper (7)

Lithologies: not reported (80), mudstone (12), siltstone (11), sandstone (30)

Paleoenvironments: terrestrial indet. (97), coastal indet. (1), estuary/bay (1), fluvial indet. (1), channel lag (4), coarse channel fill (1), fine channel fill (2), "channel" (5), crevasse splay (17)

Age range: base of the Judithian to the top of the Campanian or 83.50000 to 72.10000 Ma