Bald Eagle Formation
The Ordovician Bald Eagle Formation is a mapped bedrock unit in central Pennsylvania, USA. It is a ridge-forming unit in the Appalachian Mountains.
| Bald Eagle Formation | |
|---|---|
| Stratigraphic range: Late Ordovician | |
| Type | sedimentary |
| Underlies | Juniata Formation |
| Overlies | Reedsville Formation |
| Thickness | 275 +/-25 m |
| Lithology | |
| Primary | sandstone |
| Other | conglomerate, shale |
| Location | |
| Region | Appalachian Mountains |
| Extent | Pennsylvania, Maryland, West Virginia |
| Type section | |
| Named for | Bald Eagle Mountain, Pennsylvania |
| Named by | A. W. Grabau |
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