Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Brassfield Formation  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Silurian | |
| ....Lower Silurian | |
| .....Brassfield Formation | |
| RT | Kentucky |
| Illinois | |
| Indiana | |
| Ohio | |
| Tennessee | |
| Arkansas | |
| SN | Considered to consist of lower dolomitic limestone, including Whitfieldella bed, and Plum Creek Clay Member above. In central N Arkansas, S Indiana, SW Illinois, central Kentucky, SW Ohio, and S Tennessee. |