| Ashlock Formation | |
|---|---|
| Stratigraphic range: Ordovician | |
 Brachiopod fossil from the Ashlock Formation | |
| Type | Formation |
| Underlies | Drakes Formation |
| Overlies | Calloway Creek Formation |
| Location | |
| Region | Kentucky |
| Country | United States |
The Ashlock Formation is a geologic formation in Kentucky. It preserves fossils dating back to the Ordovician period .
