Cliff-former
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A cliff-former is a geological unit of bedrock that is more resistant to erosion than overlying or underlying strata and consequently produces outcrops with high slope angles. It is more or less equiv
Cliff-forming Tuscarora Quartzite outcrop in West Virginia
Tuscarora Sandstone
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The Silurian Tuscarora Formation — also known as Tuscarora Sandstone or Tuscarora Quartzite — is a mapped bedrock unit in Pennsylvania, Maryland, West Virginia, and Virginia, US.
Outcrop of Tuscarora Formation in Thickhead Wild Area, Centre County, Pennsylvania
Conformable contact of overlying Tuscarora Formation (white rock, left) with underlying Juniata Formation (red rock, right) at the Narrows along U.S. 30 in Bedford County, Pennsylvania.
Sample of Silurian Tuscarora Formation collected from Bald Eagle Mountain, Centre County, Pennsylvania, showing Diplocraterion trace fossil at left. Specimen is ~22cm high.