Big Clifty Formation
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| 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]
