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

Ledges in Susquehanna River

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1939-09-12

Ledges in Susquehanna River

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1939-09-12

Ledges in Susquehanna River

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1939-09-12

Ledges of Chickies Rock

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

Ledges of the Tuscarora in Susquehanna River

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1939-09-12

Lehigh Valley south of Mauch Chunk

Subject	Stratigraphy
Creator	Willard, Bradford, 1894-
Date	1935-05-31

Limestone and dolomite, Elbrook Formation

Subject	Stratigraphy
Creator	Bolles, William H.

Limestone and dolomite (light), fresh face

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

Limestone and dolomite (light), weathered surface

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

Limestone breccia

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

Limestone breccia in contrast with limestone loosened from quarry wall

Subject	Stratigraphy

Limestone conglomerate

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

Limestone conglomerate

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

Limestone conglomerate

Subject	Stratigraphy
Creator	Willard, Bradford, 1894-
Date	1932-08-19

Limestone conglomerate or breccia

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

Limestone conglomerate or breccia

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

Limestone in Marcellus

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

Limestone lenses in Martinsburg shale

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

Limestone (Loyalhanna) outcrop

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1922-10-12

Limestone nodules in Conemaugh shale

Subject	Stratigraphy
Creator	Shaffner, Marchant N. (Marchant Nissley), 1897-1990
Date	1954

Limestone quarry, Canoe Creek Stone Company

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1933-10-05

Limestone quarry, vintage dolomite

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1934-08-24

Limestone typical of the Millbach Member of the Conococheague

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1955

Little Pittsburgh coal and adjacent strata

Subject	Stratigraphy
Creator	Johnson, Meredith E., 1897-
Date	1923-05-22

Lockatong Formation

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

Looking across terrace through orchard toward outcrop of Pottsville sandstone


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

Looking east in Loysburg Gap

Subject	Stratigraphy
Creator	Foose, Richard Martin, 1915-
Date	1941-10

Looking south across Monongahela River

Subject	Stratigraphy
Creator	Chubb, Leslie
Date	1972

Looking toward Selinsgrove

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

Lower Allegheny strata

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1935-08-10

Lower bench of quarry in Catteraugus Group

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1926-08-27

Lower part of Don where formation is dominantly black shale

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

Lower part of Pocono

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1939-10-12

Lower part of Upper Shenango sandstone

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1941-08

Loyalhanna limestone

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1929-09-21

Loyalhanna limestone

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1929-09-21

Loyalhanna limestone

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1928-05-23

Loyalhanna limestone 40 feet thick cross-bedded siliceous limestone (lower half of rock exposure)

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

Loyalhanna limestone and Burgoon sandstone 300 feet

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

Loyalhanna limestone, close-up showing details

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1928-05-23

Loyalhanna limestone interfingering in Mauch Chunk red beds

Subject	Stratigraphy
Creator	Shaffner, Marchant N. (Marchant Nissley), 1897-1990
Date	1954

Loyalhanna limestone (upper half of rock exposure) in contact with top of Pocono sandstone

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

Magnesite vein in serpentine

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1922-08-31

Mahoning coal (arrow), and sandstone

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

Mahoning coal (arrow), clay and sandstone

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

Mahoning sandstone

Subject	Stratigraphy
Creator	Shaffner, Marchant N. (Marchant Nissley), 1897-1990
Date	1954

Mahoning sandstone at Monroe

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

Mahoning sandstone quarry near Apollo, Pa.

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1928-09-18

Mapleton-Ridgeley across Juniata

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

Mapleton-Ridgeley sandstone

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