Keasey Formation

Geology

Members: unnamed (31), Lower (20), lower/middle (1), Middle (35), Upper (8)

Lithologies: not reported (18), mudstone (57), "shale" (3), siltstone (68), sandstone (2), "carbonate" (2)

Paleoenvironments: marine indet. (33), carbonate indet. (1), offshore indet. (4), basinal (siliceous) (2), offshore (2), basinal (siliciclastic) (1), deep-water indet. (52)

Age range: base of the Priabonian to the top of the Rupelian or 37.71000 to 27.30000 Ma