Pennsylvania Geological Survey - Historical Photographs

Active Filters:
  • Subject = Geomorphology
  • Location Covered = Allegheny

About This Collection

This collection includes photographs from the Pennsylvania Geological Survey Historical Photographs Collection.
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770 foot terrace of Allegheny River gravel
770 foot terrace of Allegheny River gravel
Geomorphology
770 foot terrace of Allegheny River gravel on west side of Squaw Run near mouth.
Terrace between Aspinwall and Squaw Run
Terrace between Aspinwall and Squaw Run
Geomorphology
Terrace between Aspinwall and Squaw Run (elevation 940 - 950').
Terrace between Aspinwall and Squaw Run
Terrace between Aspinwall and Squaw Run
Geomorphology
Terrace between Aspinwall and Squaw Run (elevation 940 - 950').