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

Lewistown Narrows

Subject	Topography
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1921-07-01

Lewistown Narrows

Subject	Topography
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1921-07-01

Lewistown Narrows

Subject	Topography
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1921-07-01

Lewistown Narrows

Subject	Topography
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1921-07-01

Lewistown Narrows looking down

Subject	Topography
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1921-07-01

Lower part of Don where formation is dominantly black shale

Subject	Stratigraphy
Creator	Willard, Bradford, 1894-
Date	1934-06-22

Method of piling silica brick

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1923-07-09

Mifflin Coal and Sandstone

Subject	Stratigraphy
Creator	Cleaves, Arthur B. (Arthur Bailey), 1905-1985
Date	1936-08

Mifflin Sand Company

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1931-06-25

Mifflin Sand Company

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1931-06-25

Mifflin Sand Company pit

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1928-06-22

Monument stone

Subject	Miscellaneous
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1924-04-01

Monument stone

Subject	Miscellaneous
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1924-04-01

Monument stone

Subject	Miscellaneous
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1924-04-01

Monument stones

Subject	Miscellaneous
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1924-04-01

Monument stones, Oriskany sandstone (?)

Subject	Miscellaneous
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1924-04-01

Mud cracks

Subject	Weathering
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1921-07-01

Non-symmetrical sharp anticline

Subject	Structure-Folds
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1921-08-16

Oneida (?) conglomerate

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1924-04-01

Oneida-Medina rock flow

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1924-04-01

"Oswego" conglomerate

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1929-08-02

Oswego sandstone

Date
Subject	Stratigraphy Sedimentation
Creator	Ashley, Geo. H. (George Hall), 1866-1951

Oswego sandstone

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1930-05-16

Reedsville Formation

Subject	Stratigraphy
Creator	Wells, Richard B.
Date	1968-03-07

Ridgeley sandstone

Subject	Stratigraphy
Creator	Cleaves, Arthur B. (Arthur Bailey), 1905-1985
Date	1936-08

Ridgeley sandstone

Subject	Stratigraphy
Creator	Cleaves, Arthur B. (Arthur Bailey), 1905-1985
Date	1936-08

Ridgeley sandstone

Subject	Stratigraphy
Creator	Cleaves, Arthur B. (Arthur Bailey), 1905-1985
Date	1936-08

Ripple marks, Tuscarora sandstone

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1930-05-16

Rose Hill and Tuscarora Formations

Subject	Stratigraphy
Creator	Wells, Richard B.
Date	1968-03-06

Salina strata highly inclined and folded

Subject	Structure-Folds
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1921-07-01

Seawra Cave

Subject	Caves
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1929

Sharp anticlinal elbow / Silurian (Clinton?)

Subject	Structure-Folds
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1921-08-16

Sharply intersecting faults in Salina rocks

Subject	Structure-Faults
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1921

Sharp right-angled fold in Salina rocks

Subject	Structure-Folds
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1921-08-16

Sharp syncline

Subject	Structure-Folds
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1921-07-01

Silurian rocks

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1921

Silurian rocks (detail)

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1921

Silurian rocks (detail) red shale and sandstone

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1921

Steeply folded strata

Subject	Structure-Folds
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1921

Steeply folded strata

Subject	Structure-Folds
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1921-07-01

Steeply folded strata

Subject	Structure-Folds
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1921-08-16

Steeply folded strata

Subject	Structure-Folds
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1921-07-01

Steeply inclined and folded rocks

Subject	Structure-Folds
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1921-07-01

Steeply inclined Salina rocks

Subject	Structure-Folds
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1921-08-16

St. Marks Protestant Episcopal Church offices

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

Structure of Middle Silurian rocks

Subject	Structure-Folds
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1929-08-02

Swimming in Johnston Cave

Subject	Caves
Creator	Hickok, W. O. (William Orville), 1905-
Date	1932-06-01

Swimming in Johnston Cave

Subject	Caves
Creator	Hickok, W. O. (William Orville), 1905-
Date	1932-06-01

Swimming in Johnston Cave

Subject	Caves
Creator	Hickok, W. O. (William Orville), 1905-
Date	1932-06-01

Symetrical syncline in Silurian (Clinton) rock

Subject	Structure-Folds
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1921-08-16