Pennsylvania Geological Survey - Historical Photographs - Browse all items - Pennsylvania Photos and Documents

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Pennsylvania Geological Survey - Historical Photographs - Browse all items - Pennsylvania Photos and Documents

Tunnel connecting quarries either side of William Penn Highway

Subject	Nonmetallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951

Tunnel of abandoned canal west of Lebanon

Subject	Engineering Geology
Creator	Horich, Franklin J. W.
Date	1924-03-02

Tunnel of abandoned canal west of Lebanon

Subject	Engineering Geology
Creator	Horich, Franklin J. W.
Date	1924-03-02

Typical outcrops, Martinsburg shale

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1968

Typical outcrops, Martinsburg shale

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1968

Unconformity, Martinsburg Formation and Tuscarora quartzite

Subject	Structure
Creator	Bolles, William H.
Date	1971

Unconformity, Martinsburg Formation and Tuscarora quartzite

Subject	Structure
Creator	Bolles, William H.
Date	1971

Upper surface of the diabase at Cornwall

Subject	Metallic Mineral Resources
Creator	Geyer, Alan R.
Date	1952

Vertical fault plane

Subject	Structure-Faults
Creator	Moseley, John Reed

Visual pollution

Subject	Environmental Geology
Creator	Bolles, William H.
Date	197?

Wall of ore under railroad, Cornwall

Subject	Metallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1922-08-17

Zeller's Fort

Subject	Cities, Towns, and Buildings
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1929-05-08