|Geologic age||Late Cretaceous|
Sedimentary > Carbonate > Marlstone (Bed)
Sedimentary > Clastic > Sandstone (Bed)
Sedimentary > Carbonate > Limestone (Bed)
|Comments||Dark gray calcareous clay (marl), sandy marl and fine grained sand with some limestone. Approximatly 250 ft. thick. Marl refers to loosley consolidated calcareous clays, silts and sands containing glauconite.|
Dane, C.H.,1929, Upper Cretaceous formations of southwestern Arkansas: Arkansas Geol. Survey Bull.1, 215 pp.
|Counties||Clark - Hempstead - Hot Spring - Howard - Little River - Pike - Sevier|