Edwardsville Formation
The Edwardsville Formation is a geological structure in the Borden Group, of the Lower Mississippian sub system, (Osagean, late Tournaisian). Crinoids fossils can be found in the formation.
| Edwardsville Formation | |
|---|---|
| Stratigraphic range: Mississippian | |
| Type | Formation |
| Unit of | Borden Group |
| Underlies | Muldraugh Formation and Ramp Creek Formation |
| Overlies | Spickert Knob Formation |
| Location | |
| Region | Indiana |
| Country | United States |
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