| Bellefonte Formation | |
|---|---|
| Stratigraphic range: Lower Ordivician | |
| Type | Formation |
| Unit of | Beekmantown Group |
| Sub-units |
|
| Underlies | Loysburg Formation |
| Overlies | Axeman Formation |
| Thickness | 50' - 2,145' |
| Lithology | |
| Primary | Dolomite, Limestone |
| Other | Sandstone, Chert |
| Location | |
| Region | |
| Country | United States |
| Type section | |
| Named for | Bellefonte, Pennsylvania |
The Ordovician Bellefonte Formation is a mapped bedrock unit in central Pennsylvania. It is the uppermost unit of the Beekmantown Group. The top of the Bellefonte is marked by the Knox Unconformity.