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

Tuscarora Formation

Subject	Stratigraphy
Creator	Wells, Richard B.
Date	1968-08-27

Tuscarora Formation

Subject	Stratigraphy
Creator	Wells, Richard B.
Date	1968-08

Tuscarora Formation

Subject	Stratigraphy
Creator	Wells, Richard B.
Date	1969-03-27

Tuscarora Formation

Subject	Stratigraphy
Creator	Wells, Richard B.
Date	1968-08-27

Tuscarora Formation

Subject	Stratigraphy
Creator	Wells, Richard B.
Date	1969-05-27

Tuscarora Formation

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

Tuscarora Formation

Subject	Stratigraphy
Creator	Wells, Richard B.
Date	1967-08-10

Tuscarora Formation

Subject	Stratigraphy
Creator	Wells, Richard B.
Date	1969-05-27

Tuscarora Formation

Subject	Stratigraphy
Creator	Wells, Richard B.
Date	1968-08-27

Tuscarora Formation

Subject	Stratigraphy
Creator	Wells, Richard B.
Date	1968-08-27

Tuscarora Formation

Subject	Stratigraphy
Creator	Wells, Richard B.
Date	1968-03-05

Tuscarora (or mountain) sandstone used for monument

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1924-10-04

Tuscarora sandstone (?)

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1922-10-15

Tuscarora sandstone (?)

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1922-10-15

Tuscarora (?) sandstone in new roadcut

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1933-09-26

Tuscarora (?) sandstone in new roadcut

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1933-09-26

Twisted and squeezed Birmingham shale

Subject	Stratigraphy
Creator	Johnson, Meredith E., 1897-
Date	1925-05-16

Type measured section of Dalmatia Member of Mahantango Formation

Subject	Stratigraphy
Creator	Hoskins, Donald M.
Date	1964

Typical appearance of partially weathered Pine Creek limestone

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

Typical Chemung strata

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

Typical outcrops, Martinsburg shale

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1968

Typical outcrops, Martinsburg shale

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1968

Typical schistose structure, Peters Creek

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

Unconformal contact

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1924-07-29

Unconformity in Mauch Chunk, Pa.

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

Unconformity or fault between horizontal Martinsburg shale and vertical Medina sandstone

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

Unconformity, Triassic

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1960-12

Unconformity, west end of Shoo Fly Tunnel, north side of B&O Railroad

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

Unconformity, west end of Shoo Fly Tunnel, south side of B&O Railroad

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

Upper bench of quarry in Catteraugus Group

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

Upper blue Mauch Chunk limestone

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

Upper Conemaugh Formation

Subject	Stratigraphy
Creator	Craft, Jesse L.

Upper Devonian, Lock Haven Formation

Subject	Stratigraphy
Creator	Berg, Thomas M.
Date	1976

Upper Freeport coal, clay and limestone

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

Upper Freeport limestone

Subject	Stratigraphy
Creator	Graeber, Charles Karsner, 1896-
Date	1933-07-10

Upper Freeport limestone in stream bed

Subject	Stratigraphy
Creator	Hughes, H. Herbert (Harry Herbert), 1905-
Date	1927-09-01

Upper half of Allegheny and base of Conemaugh

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

Upper Hamilton (Moscow) shales with abundant fossils

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1933-05-28

Upper Mahoning sandstone exposed in roadcut

Subject	Stratigraphy
Creator	Lohman, Stanley William, 1907-
Date	1934

Upper part of Don where formation is dominantly limestone

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

Upper Triassic

Subject	Stratigraphy
Creator	Willard, Bradford, 1894-
Date	1934-04-17

Upper Washington limestone

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1925-11-03

Upper Washington limestone

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1926-09-14

Upper Washington limestone

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1925-11-03

Upper Washington limestone

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1926-09-16

Upper Washington limestone

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1925-11-10

Upper Washington limestone

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1928-06-17

Upper Washington limestone

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1926-09-16

Upper Washington limestone

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1925-11-03

Upturned stones

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1929-04-23