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

Diabase quarry of Black Diamond Granite Corporation

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1924-11-14

Diabase quarry of Coopersburg Granite Company

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

Diabase quarry plant

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1933-07-10

Diamond core drilling for flint clay

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

Diamond Mine

Subject	Mineral Resources-Coal
Creator	Shaffner, Marchant N. (Marchant Nissley), 1897-1990
Date	1950

Dick Sand Company quarry

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1924-08-20

Dick Sand Company quarry

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1924-08-20

Differential Thermal Analysis (DTA) furnace pit

Subject	Miscellaneous
Creator	Koppe, Edwin F.
Date	1957

Differential Thermal Analysis (DTA) with furnaces on top

Subject	Miscellaneous
Creator	Koppe, Edwin F.
Date	1957

Differential weathering in drift

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

Digging molding sand

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1925-10-01

Dike at Cornwall

Subject	Metallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1922-08-17

Dike in limestone, Cornwall

Subject	Metallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1922-08-17

Dimension stone quarry in Chickies Formation

Subject	Nonmetallic Mineral Resources
Creator	Inners, Jon D.
Date	1972-12-01

Dinosaur imprint

Subject	Fossils
Creator	Hickok, W. O. (William Orville), 1905-
Date	1933-02-01

Dintaman Boat House during spring flood

Subject	Cities, Towns, and Buildings
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date

Dipping and slightly fractured Bellefonte strata

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

Dipping Triassic brownstone

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

Dip slope into creek

Subject	Geomorphology
Creator	Bolles, William H.
Date	1970-04

Dip slope of Birmingham shale

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

Dirt road at end of concrete

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

Discarded blocks of Pine Creek limestone

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

Discharge from mine pump

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1929-04-23

Dissected plateau in baked shales near trap dike

Subject	Geomorphology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1928-05-01

Distant view of Bedford County wells

Subject	Topography
Creator	Johnson, Meredith E., 1897-
Date	1922

Distant view of cliff

Subject	Topography
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1927-10-14

Distant view of gravel dredge in Allegheny River

Subject	Nonmetallic Mineral Resources
Creator	Johnson, Meredith E., 1897-
Date

Distant view of Wind Gap

Subject	Topography
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1924-08-01

Distant view of Wind Gap

Subject	Topography
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1924-08-01

Distorted beds in middle Conemaugh

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

Distorted sand layers

Subject	Glacial Geology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1930-08-03

Distorted strata, Cambria-Ordovician limestone

Subject	Structure-Folds
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1925-10-15

Disturbed morraine in foreground, Kame farther back, Bald Mountains in background.

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

Ditch-digging machine

Subject	Miscellaneous
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1924-08-01

Divide between Crooked Creek and Marsh Creek

Subject	Geomorphology
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1937-08

Dodge Roadster

Subject	Miscellaneous
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1925-05-08

Dolomite beds, boudinaged

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

Dolomite beds, boudinaged

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

Dolomite quarry

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1929-04-24

Dolomite quarry

Subject	Structure-Folds
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1929-05-03

Dolomite quarry

Subject	Nonmetallic Mineral Resources
Creator	Bolles, William H.
Date	1970-04

Dolomite quarry

Subject	Structure
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1929-05-03

Dolomite quarry, folded strata

Subject	Structure-Folds
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1929-05-03

Don Hoskins, Geologist

Subject	Survey Staff
Creator	Koppe, Edwin F.
Date	1957

Dorr thickener

Subject	Mineral Resources-Coal
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1931

Double folding in Helderberg limestone

Subject	Structure-Folds
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1933-09

Down Blockhouse Fork of Little Pine Creek

Subject	Topography
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1931-02-01

Down Swatara Creek valley

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

Drag fold in Conestoga limestone along Route 72 at Lynden

Subject	Structure-Folds
Creator	Geyer, Alan R.
Date	1960

Drag folds in Pocono sandstone

Subject	Structure-Folds
Creator	Shaffner, Marchant N. (Marchant Nissley), 1897-1990
Date	1952