Pennsylvania Geological Survey - Historical Photographs

Active Filters:
  • Location Covered = Allegheny
  • Subject = Stratigraphy
  • Date = 1926-05-21

About This Collection

This collection includes photographs from the Pennsylvania Geological Survey Historical Photographs Collection.
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Bolder lying on shale (elevation 800)
Bolder lying on shale (elevation 800)
Stratigraphy
Bolder lying on shale (elevation 800). Cut near mouth of Squaw Run.