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

Clarks Creek dam

Subject	Engineering Geology
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1939-08-01

Clarks Creek dam

Subject	Engineering Geology
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1939-08-01

Clarks Creek dam

Subject	Engineering Geology
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1939-08-01

Clarks Creek dam

Subject	Engineering Geology
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1939-08-01

Cliff below Dauphin

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

Cliff of Pocono sandstone

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

Column of Pottsville sandstone

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

Column of Pottsville sandstone

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

Conglomerate faulted against base of Tuscarora

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

Conglomerate in Mauch Chunk

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

Conglomerate near base of Tuscarora

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

Conglomerate rock in Mauch Chunk Formation

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

Construction at Three Mile Island atomic reactor

Subject	Cities, Towns, and Buildings
Creator	Geyer, Alan R.

Construction of new Convention Center

Subject	Miscellaneous
Creator	Bolles, William H.
Date	1973-05-10

Contact between Myerstown and Annville limestone

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1956

Contact of Myerstown and Annville limestone

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1956

Cooling tower at Three Mile Island atomic reactor plant

Subject	Cities, Towns, and Buildings
Creator	Geyer, Alan R.

Country club flat and gap

Subject	Topography
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1925-08-01

Cove Mountain, west side of river

Subject	Topography
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1925-08-01

Covered bridge at Clarks Ferry

Subject	Topography
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1921-08-01

Crest of Third Mountain near western end

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

Crusher, washer, and storage bins

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

Crystal Lake, Indian Echo Caverns

Subject	Caves
Creator	Bolles, William H.
Date	1970-11

Cumbler gravel pit

Subject	Terrace Deposits
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1931-06-02

Cumbler gravel pit

Subject	Terrace Deposits
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1931-06-02

Cut, for big water main, showing cobbles in gravel, all resting on Martinsburg shale

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

Dam above Falmouth

Subject	Surface Water
Creator	Moyer, Forrest Theodore, 1906-

Dauphin Consolidated Water Company

Subject	Environmental Geology
Creator	Geyer, Alan R.
Date	1972-11-01

Decomposed Triassic conglomerate

Subject	Stratigraphy-Weathering
Date	1921-07-01

Decomposed Triassic conglomerate at 400 feet above tide

Subject	Stratigraphy-Weathering
Date	1921-07-01

Derrytown Mall shopping center

Subject	Environmental Geology
Creator	Geyer, Alan R.
Date	197?

Detail of glacial gravel

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1922-10-11

Devonian Hamilton strata

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1929-05-01

Devonian Hamilton strata

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

Diabase boulders, Triassic age

Subject	Igneous and Metamorphic
Creator	Ashley, Geo. H. (George Hall), 1866-1951

Diabase float from dike

Subject	Engineering Geology
Creator	Bolles, William H.
Date	1970

Diabase float from dike

Subject	Engineering Geology
Creator	Bolles, William H.
Date	1970

Differential Thermal Analysis (DTA) furnace pit

Subject	Miscellaneous
Creator	Koppe, Edwin F.
Date	1957

Differential Thermal Analysis (DTA) with furnaces on top

Subject	Miscellaneous
Creator	Koppe, Edwin F.
Date	1957

Dintaman Boat House during spring flood

Subject	Cities, Towns, and Buildings
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1924-05-15

Dipping Triassic brownstone

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

Don Hoskins, Geologist

Subject	Survey Staff
Creator	Koppe, Edwin F.
Date	1957

Down Swatara Creek valley

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

East Quarry and Mine in Annville limestone

Subject	Nonmetallic Mineral Resources
Creator	Geyer, Alan R.
Date	1953

Eisenhower (Penn Harris) Interchange on Interstate 83

Subject	Interstate Highways and Other Roads
Creator	Geyer, Alan R.
Date	1969

Elks Parade

Subject	Cities, Towns, and Buildings
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1931-08-27

Elks Parade

Subject	Cities, Towns, and Buildings
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1931-08-27

Enlarging Hershey Motor Lodge

Subject	Miscellaneous
Creator	Bolles, William H.
Date	1973-05-10

Entering Grand Ballroom, Indian Echo Caverns

Subject	Caves
Creator	Bolles, William H.
Date	1970-11

Entrance of coal mine near top of Peters Mountain

Subject	Mineral Resources-Coal
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1931