| Big Clifty Formation | |
|---|---|
| Stratigraphic range: Mississippian | |
| Type | Formation |
| Unit of | Stephensport Group [1] |
| Underlies | Haney Limestone |
| Overlies | Beech Creek Limestone |
| Location | |
| Region | Indiana |
| Country | United States |
The Big Clifty Formation is a geologic formation in Indiana. [2] It preserves fossils dating back to the Carboniferous period. [3]
In Illinois and Kentucky, the Big Clifty is referred to as the Big Clifty Sandstone and has been assigned to the Golconda Formation. [4]