Edwardsville Formation
Appearance
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 |
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]
References
[edit]- ^ Edwardsville Formation at the Indiana Geological Survey
- ^ Crinoids from the Edwardsville Formation (Lower Mississippian) of Southern Indiana. William I. Ausich and N. Gary Lane, Journal of Paleontology, November 1982, Volume 56, Number 6, pages 1343-1361 (abstract)