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

Clay and shale under Lower Kittanning coal

Subject	Nonmetallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1923-09-25

Clay dam from Route 6 near Covington

Subject	Engineering Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1932-05-15

Clay mine of New York and Pennsylvania Clay Products Company

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

Clay plant at Barrett Station

Subject	Economic Uses
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1940-10-18

Clay slope

Subject	Nonmetallic Mineral Resources
Creator	Hughes, H. Herbert (Harry Herbert), 1905-
Date	1927-08-01

Clay tile plant at Brockway

Subject	Nonmetallic Mineral Resources
Creator	Geyer, Alan R.
Date	1970-10

Clearfield

Subject	Cities, Towns, and Buildings

Clearfield County roads

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

Clearfield County roads

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

Clearfield County roads

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

Clearfield County roads

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

Clearfield County roads

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

Clearfield County stream

Subject	Rivers and Streams
Creator	Ashley, Geo. H. (George Hall), 1866-1951

Clearfield County stream

Subject	Rivers and Streams
Creator	Ashley, Geo. H. (George Hall), 1866-1951

Clearfield County stream

Subject	Rivers and Streams
Creator	Ashley, Geo. H. (George Hall), 1866-1951

Clearfield County stream

Subject	Rivers and Streams
Creator	Ashley, Geo. H. (George Hall), 1866-1951

Clearfield County stream

Subject	Rivers and Streams
Creator	Ashley, Geo. H. (George Hall), 1866-1951

Clearfield County stream

Subject	Rivers and Streams
Creator	Ashley, Geo. H. (George Hall), 1866-1951

Clearfield Creek

Subject	Rivers and Streams
Creator	Ashley, Geo. H. (George Hall), 1866-1951

Clearfield Creek

Subject	Rivers and Streams
Creator	Ashley, Geo. H. (George Hall), 1866-1951

Cleavage and joint planes in red shale

Subject	Structure
Creator	Moseley, John Reed

Cliff across river from Beaver Falls

Subject	Topography
Creator	Corbin, J. Ross
Date	1925-11-02

Cliff across river from Beaver Falls

Subject	Topography
Creator	Corbin, J. Ross
Date	1925-11-02

Cliff below Dauphin

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

Cliff directly across Allegheny River from Freeport

Subject	Stratigraphy
Creator	Hughes, H. Herbert (Harry Herbert), 1905-
Date	1927-07-01

Cliff from bridge at Leechburg

Subject	Geomorphology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1927-07-11

Cliff in Peters Creek Formation grading into Tucquan schist

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1922-06-04

Cliff of Catskill?

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

Cliff of Girard Shale

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

Cliff of Girard Shale

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

Cliff of limestone on Little Juniata

Subject	Nonmetallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1942-08

Cliff of Mahoning sandstone along Youghiogheny River

Subject	Stratigraphy
Creator	Hickok, W. O. (William Orville), 1905-
Date	1934-07-01

Cliff of Peters Creek Formation

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1922-06-04

Cliff of Pocono sandstone

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

Cliff section, Natrona

Subject	Stratigraphy
Creator	Hughes, H. Herbert (Harry Herbert), 1905-
Date	1927-10-01

Cliff section, Natrona

Subject	Stratigraphy
Creator	Hughes, H. Herbert (Harry Herbert), 1905-
Date	1927-10-01

Cliff with folded strata

Subject	Topography
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1925-07-16

Cliff with folding

Subject	Topography
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1925-07-16

Clinger Well

Subject	Oil and Gas
Creator	Johnson, Meredith E., 1897-
Date	1922-06-28

Clinger Well (gusher)

Subject	Oil and Gas
Creator	Johnson, Meredith E., 1897-
Date	1922-06-28

"Clinton" red shales

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

"Clinton" Shale and sandstone beds

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

Close folding, Catskill strata

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

Close folding, Catskill strata

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

Close folding of limestone and dolomite in quarries southeast of Northampton

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

Close folding of limestone and dolomite in quarries southeast of Northampton

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

Close folding of limestone and dolomite in quarries southeast of Northampton

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

Close folding of rocks

Subject	Structure-Folds
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1931-07-17

Closer view of the valley wall of drift of Middle Branch of Little Neshannock Creek

Subject	Glacial Geology
Creator	Graeber, Charles Karsner, 1896-
Date

Close-up of conglomerate

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