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Bald Eagle Formation
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The Ordovician Bald Eagle Formation is a mapped bedrock unit in central Pennsylvania, USA. It is a ridge-forming unit in the Appalachian Mountains.
Outcrop of Bald Eagle Formation, where Rt. 164 crosses Tussey Mountain, Blair County, Pennsylvania
Outcrop of Bald Eagle Formation, where Rt. 164 crosses Tussey Mountain, Blair County, Pennsylvania
Close-up of outcrop of Bald Eagle Formation, where Rt. 164 crosses Tussey Mountain, Blair County, Pennsylvania. Note prominent crossbedding and lens c
Close-up of outcrop of Bald Eagle Formation, where Rt. 164 crosses Tussey Mountain, Blair County, Pennsylvania. Note prominent crossbedding and lens cap for scale.
Pyrite in the Bald Eagle Formation, from the Skytop Roadcut where I-99 crosses Bald Eagle Mountain, Centre County, Pennsylvania. Scale bar is 1 cm.
Pyrite in the Bald Eagle Formation, from the Skytop Roadcut where I-99 crosses Bald Eagle Mountain, Centre County, Pennsylvania. Scale bar is 1 cm.
Natural outcrop of the Bald Eagle Formation visible from U.S. Route 522 west of Shade Gap, Huntingdon County, Pennsylvania
Natural outcrop of the Bald Eagle Formation visible from U.S. Route 522 west of Shade Gap, Huntingdon County, Pennsylvania
The Narrows (Pennsylvania)
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The Narrows is a water gap where the Raystown Branch of the Juniata River passes through Evitts Mountain in Bedford County, Pennsylvania. Both U.S. Route 30 and the Pennsylvania Turnpike pass through
Bald Eagle Formation
…stone. However, iron pyrite inclusions may lead to acidic rainwater runoff. See also Geology of Pennsylvania A panorama of the Bald Eagle portion of the Narrows roadcut in Bedford County for the Pennsylvania Turnpike. Stratigraphic up is to the left, and thus the beds are overturned. The beds are highly folded…
Another view looking west in 1982
Another view looking west in 1982
A panorama of a portion of the Narrows roadcut for the Pennsylvania Turnpike. Stratigraphic up is to the left, and thus the beds are overturned. The b
A panorama of a portion of the Narrows roadcut for the Pennsylvania Turnpike. Stratigraphic up is to the left, and thus the beds are overturned. The beds are highly folded and faulted at right. February 2001.
The Narrows Bridge in 1997
The Narrows Bridge in 1997