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

Skip to search Skip to main Skip to footer

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

Pinnacle at point of ridge

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1930-07-31

Portage shale, overlain by drift, with large imbedded boulder

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1930-08-01

Portage with thin sandstone layers

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1930-08-03

Pre-glacial channel looking north toward New Milford

Subject	Glacial Geology
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1922-08-13

Pre-glacial channel south from New Milford


Subject	Topography Glacial Geology
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964

Rock debris being freed by melting of the ice

Subject	Glacial Geology
Creator	Socolow, Arthur A.
Date	1952

Sand and gravel of Illinoian age

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1926-09-02

Sand and gravel of Illinoian age

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1926-09-02

Sand dune

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1930-08-03

Sand pit beside road

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1934-08

Sand plant

Subject	Glacial Geology
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1933-09-30

Section of glacial hill cut by road

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1931-02-25

Section of gravel pit

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1930-07-18

Section of gravel pit

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1930-07-18

Section of sand pit (glacial)

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1926-09-21

Shale cliff

Subject	Glacial Geology
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1933-10-01

Shore of Lake Erie showing erratic boulders

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1930-07-31

Slippery Rock Creek

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1921-09-22

Slippery Rock Run in post-glacial channel

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1921-09-22

Slippery Rock Run in post-glacial channel

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1921-09-22

Slippery Rock Run in post-glacial channel

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1921-09-22

Terminal moraine (Illinoian)

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1926-10-19

Terminal moraine (Illinoian)

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1926-10-19

Terrace deposit in road cut

Subject	Glacial Geology
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1925-06-18

Top of glacial gravel deposits of supposed Kansasian age

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1926-08-26

Top of glacial pothole

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1921-08-07

To show amount of stripping (glacial)

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1924-08-01

Township road through a glacial deposit

Subject	Glacial Geology
Creator	Graeber, Charles Karsner, 1896-
Date	1934-08-02

Valley of Conewango Creek

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1942-05

View from panorama point between Bangor and Portland

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1932-05-29

View over Whittlesey Lake bottom and toward beach

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1930-08-03

Water-worn sandstone

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1921-08-07

West Springfield

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1930-08-03

Whittlesey Lake bottom in foreground

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1930-07-30

Wisconsin gravel in pit at Riegelsville

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1932-05-28

Wisconsin moraine

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951

Wisconsin moraine

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951

Wisconsin stratified drift near mouth of Martins Creek

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1932-05-29

W. W. Gulich sand pit, river side glacial lake deposit

Subject	Glacial Geology
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1924-08-08