Kirkwood Formation
Geology
Group: Uitenhage
Members: unnamed (47), Alloway Clay (1), Asbury Park (1), lower (2), Shiloh marl (39), Uppermost (1)
Lithologies: not reported (10), claystone (9), mudstone (22), "shale" (1), siltstone (16), sandstone (59), marl (1)
Paleoenvironments: marine indet. (5), terrestrial indet. (18), marginal marine indet. (1), coastal indet. (61), fluvial indet. (5), "channel" (1), lacustrine indet. (2)
Age range: base of the Asbian to the top of the Early/Lower Hemingfordian or 340.00000 to 15.97000 Ma
Collections