Edwardsville Formation | |
Type: | Formation |
Age: | Mississippian |
Period: | Mississippian |
Region: | Indiana |
Country: | United States |
Unitof: | Borden Group |
Underlies: | Muldraugh Formation and Ramp Creek Formation |
Overlies: | Spickert Knob Formation |
The Edwardsville Formation is a geological structure in the Borden Group, of the Lower Mississippian sub system,[1] (Osagean, late Tournaisian). Crinoids fossils can be found in the formation.[2]