| Edwardsville Formation |
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| Stratigraphic range: Mississippian |
| Type | Formation |
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| Unit of | Borden Group |
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| Underlies | Muldraugh Formation and Ramp Creek Formation |
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| Overlies | Spickert Knob Formation |
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| Location |
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| Region | Indiana |
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| Country | United States |
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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
- ^ 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)
Chronostratigraphy of Indiana
| Ph | | Pz | | C | | ⁋ | | Kasimovian | - McLeansboro Group
- Bond Formation, Mattoon Formation, Patoka Formation
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