Keokuk Limestone
From Wikipedia, the free encyclopedia
The Keokuk Limestone is a geologic formation in Illinois, Iowa and Missouri. It preserves fossils dating back to the Mississippian sub-period.
| Keokuk Limestone | |
|---|---|
| Stratigraphic range: Mississippian | |
| Type | Formation |
| Underlies | Warsaw Formation |
| Overlies | Burlington Limestone[1] |
| Lithology | |
| Primary | Limestone |
| Location | |
| Region | Illinois, Iowa, Missouri |
| Country | United States |
| Type section | |
| Named for | Keokuk in southeastern Iowa[1] |
