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

Fractured rock

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

Fractured surface in Chickies Rock

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

Freeport limestone along highway above Ford City

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

Friable limestone

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

From Mount Royal looking toward Roundtop

Subject	Stratigraphy
Creator	Bissell, Malcolm H.; Stose, George Willis, 1869-1960
Date	1931-06-30

Ganister on flank of Long Mountain

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

Gatesburg quartzite

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1923-08-22

General Braddock's Grave

Subject	Stratigraphy
Creator	Willard, Bradford, 1894-
Date	1933-08-01

Gettysburg shale

Subject	Stratigraphy
Creator	Hickok, W. O. (William Orville), 1905-
Date	1932-06-01

Gettysburg shale

Subject	Stratigraphy
Creator	Hickok, W. O. (William Orville), 1905-
Date	1932-06-01

Glacial gravel bank

Subject	Stratigraphy
Creator	Johnson, Meredith E., 1897-
Date	1924-08-28

Glacial scour

Subject	Stratigraphy
Creator	Willard, Bradford, 1894-
Date	1921

Glass sand quarry and plant (Oriskany sandstone)

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1923-08-22

Godfrey's Ridge south of Stroudsburg

Subject	Stratigraphy
Creator	Willard, Bradford, 1894-
Date	1931-09-01

Godfrey's Ridge south of Stroudsburg Esopus

Subject	Stratigraphy
Creator	Willard, Bradford, 1894-
Date	1931-09-01

Graded bedding in Martinsburg allochthonous graywacke

Subject	Stratigraphy
Creator	Root, Samuel I.
Date	1972-07-21

Grand View, Lincoln Highway

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

Greenbrier limestone

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

Greenbrier limestone

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1935-05-24

Greenbrier limestone

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1935-05-24

Greenbrier limestone quarry

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1928-06-15

Greenbrier limestone quarry

Date
Subject	Stratigraphy Sedimentation
Creator	Willard, Bradford, 1894-

Hamilton conglomerate

Subject	Stratigraphy
Creator	Willard, Bradford, 1894-
Date	1932-09-02

Hamilton or Oriskany sandstone

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1929-08-03

Hamilton sandstone

Subject	Stratigraphy
Creator	Willard, Bradford, 1894-
Date	1932-09-02

Hamilton sandstone

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1929-08-03

Hamilton sandstone

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1929-08-03

Hammer Creek Formation sandstone

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1969

Hammer Creek Formation sandstone and conglomerate

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1968

Harrisburg peneplain

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

Haystack Rocks

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

Haystack Rocks

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

Haystack Rocks

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

Head of incline in quarry

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1927-07-12

Heavy cross-bedding in Catskills, Conemaugh Gorge

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

Helderberg limestone outcrop

Subject	Stratigraphy
Creator	Johnson, Meredith E., 1897-
Date	1921-10-15

Helderberg limestone quarry

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

Helderberg limestone quarry

Subject	Stratigraphy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1933-08-14

Helderberg limestone quarry

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

Helderberg-Oriskany contact

Subject	Stratigraphy
Creator	Willard, Bradford, 1894-
Date	1934-10-04

Helderberg-Oriskany transitional contact

Subject	Stratigraphy
Creator	Willard, Bradford, 1894-
Date	1934-06-25

Helderburg limestone

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1926-09-21

Helderburg-Tonoloway limestone

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1923-08-22

Hershey conglomerate

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1960

Hershey Formation

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1958

Hershey Formation

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1958

Hershey Formation

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1958

Heterogeneous angular gravel

Subject	Stratigraphy
Creator	Corbin, J. Ross
Date	1925-11-04

High cut bank in Ithaca sandstone

Subject	Stratigraphy
Date	1933-07-24

Highly dipping Bellefonte strata

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