| State | Arkansas |
|---|---|
| Name | Brownstown Marl |
| Geologic age | Late Cretaceous |
| Lithologic constituents |
Major
Sedimentary > Carbonate > Marlstone (Bed)
Sedimentary > Clastic > Sandstone (Bed)
Minor
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. |
| References | Dane, C.H.,1929, Upper Cretaceous formations of southwestern Arkansas: Arkansas Geol. Survey Bull.1, 215 pp. |
| NGMDB product | |
| Counties | Clark - Hempstead - Hot Spring - Howard - Little River - Pike - Sevier |