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Outcrop on U.S. Route 522 at Blacklog Narrows southeast of Orbisonia, Pennsylvania.
Outcrop on U.S. Route 522 at Blacklog Narrows southeast of Orbisonia, Pennsylvania.
Conformable contact of overlying Tuscarora Formation (white rock, left) with underlying Juniata Formation (red rock, right) at the Narrows along rt. 3
Conformable contact of overlying Tuscarora Formation (white rock, left) with underlying Juniata Formation (red rock, right) at the Narrows along rt. 30 in Bedford County, Pennsylvania.
Sample from roadcut on U.S. Route 322 near State College, Pennsylvania, showing slickensides
Sample from roadcut on U.S. Route 322 near State College, Pennsylvania, showing slickensides
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