Bull Fork Formation
| Bull Fork Formation | |
|---|---|
| Stratigraphic range: Ordovician | |
Bull Fork Formation exposed in southern Ohio | |
| Type | Formation |
| Underlies | Drakes Formation |
| Overlies | Grant Lake Formation |
| Lithology | |
| Primary | Limestone |
| Other | Shale |
| Location | |
| Region | Ohio and Kentucky |
| Country | United States |
The Bull Fork Formation is a geologic formation in north central Kentucky and southwestern Ohio. It preserves fossils dating back to the Ordovician period.
John H. Peck assigned strata previously called the Arnheim, Waynesville, Liberty, and Whitewater Formations in Kentucky to the Bull Fork Formation.