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

Delaware River bluff (Chemung Hamilton shales)

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1922-08-09

Detached boulder of Homewood (?) sandstone


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

Detail of cliff

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

Detail of Pottsville sandstone


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

Detail of Tully limestone across river from Lock Haven

Subject	Stratigraphy
Creator	Willard, Bradford, 1894-
Date	1934-10

Details in Peters Creek Formation in railroad cut

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

Detrital character of Rockdale Run Formation

Subject	Stratigraphy
Creator	Root, Samuel I.
Date	1972-09-21

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

Devonian-Ordovician contact near Catskill, New York

Subject	Stratigraphy
Creator	Willard, Bradford, 1894-
Date	1931-10-01

Diabase dike along Pennsylvania Turnpike

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1955

Diabase dike along Pennsylvania Turnpike

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1955

Differential weathering in drift

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

Dip slope of Birmingham shale

Subject	Stratigraphy
Creator	Graeber, Charles Karsner, 1896-
Date	1921

Discarded blocks of Pine Creek limestone

Subject	Stratigraphy
Creator	Johnson, Meredith E., 1897-
Date	1924-08-30

Distorted beds in middle Conemaugh

Subject	Stratigraphy
Creator	Shaffner, Marchant N. (Marchant Nissley), 1897-1990
Date	1934-05-25

Dr. S. A. Hogue Quarry

Subject	Stratigraphy
Creator	Robinson, J. French, 1890-
Date	1920

Duncannon Member of the Catskill Formation

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1962

Duquesne coal

Subject	Stratigraphy
Creator	Schoeneck, P. S.
Date	Summer 1921

East of Gallitzin

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

Eighty foot sandstone in Mauch Chunk

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1923-08-21

Epler Formation in small quarry

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1968

Experiment Mills Section

Subject	Stratigraphy
Creator	Cleaves, Arthur B. (Arthur Bailey), 1905-1985
Date	1937-07-08

Exposure in railroad cut at Patton Station

Subject	Stratigraphy
Creator	Graeber, Charles Karsner, 1896-
Date	1933-06-24

Exposure of basal Tuscarora


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

Exposure of fossiliferous D. sandstone in Raystown Branch, Juniata River

Subject	Stratigraphy
Creator	Willard, Bradford, 1894-
Date

Exposure of Juniata group on road to Sterretts Gap


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

Exposure of Salamanca

Subject	Stratigraphy
Creator	Shaffner, Marchant N. (Marchant Nissley), 1897-1990
Date	1937-05-29

Exposure of Salamanca in brick quarry

Subject	Stratigraphy
Creator	Shaffner, Marchant N. (Marchant Nissley), 1897-1990
Date	1937-05-29

Exposure of Triassic contact (north boarder) with limestone

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1970-10-02

Exposure of Upper Connoquenessing sandstone

Subject	Stratigraphy
Creator	Graeber, Charles Karsner, 1896-
Date	1934-08-07

Exposure of Upper Silurian

Subject	Stratigraphy
Creator	Willard, Bradford, 1894-
Date	1921

Exposure of Vanport limestone along railroad west of Vanport

Subject	Stratigraphy
Creator	Graeber, Charles Karsner, 1896-
Date	1934-05-26

Exposures of Shawangunk and of Hamilton

Subject	Stratigraphy
Creator	Willard, Bradford, 1894-
Date	1932-04-01

Extreme case of cross-bedding

Subject	Stratigraphy
Creator	Johnson, Meredith E., 1897-
Date	1926-06-24

Face of upper quarry

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

Fairhope and Savage Mountains, Catskill rocks

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1935-09-11

Falls Cut terminal in basal Catskill

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1935-09-10

Falls in Muddy Creek over Waynesburg coal

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1925-11-06

Fanglomerate, Triassic

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1923-10-03

Fault at old quarry northeast of Bellefonte


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

Fault contact

Subject	Stratigraphy

Fault in Chemung rocks

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1923-08-21

Field road on Red Hill

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

Fifty feet of Homewood sandstone

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

Fine conglomerate (Homewood)

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1935-08-05

Flaggy Pottsville sandstone, Shafer Run

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1935-08-24

Flaggy sandstone under conglomerate

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1936-10-21

Fossiliferous Greenbrier limestone

Subject	Stratigraphy
Creator	Shaffner, Marchant N. (Marchant Nissley), 1897-1990
Date	1934-05-27

Fractured Chickies Rock

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1923-08-23