| Ste. Genevieve Limestone | |
| Age: | Mississippian Sub-period |
| Period: | Mississippian |
| Type: | Geological formation |
| Prilithology: | Limestone |
| Otherlithology: | Sandstone, chert[1] |
| Unitof: | Blue River Group |
| Subunits: | Fredonia Member |
| Underlies: | Aux Vases Sandstone and Paoli Limestone |
| Overlies: | St. Louis Limestone |
| Thickness: | up to 85feet |
| Region: | Missouri, Kentucky, Illinois, Indiana |
| Country: | United States |
| Namedfor: | Ste. Genevieve, Missouri[2] |
| Namedby: | Shumard |
| Year Ts: | 1859 |
The Ste. Genevieve Limestone is a geologic formation named for Ste. Genevieve, Missouri where it is exposed and was first described. It is a thick-bedded limestone that overlies the St. Louis Limestone. Both are Mississippian in age. The St. Louis Limestone is Meramecian and the Ste. Genevieve is the base of the Chesterian series.[2]
It is a primary producer in the Illinois Basin and has produced commercial oil and gas in Warren County, Kentucky.