Pennsylvania Geological Survey - Historical Photographs

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This collection includes photographs from the Pennsylvania Geological Survey Historical Photographs Collection.
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Abandoned quarry in folded Helderberg limestone
Abandoned quarry in folded Helderberg limestone
Structure-Folds
Abandoned quarry in folded Helderberg limestone, southwest of Jersey Shore
An abandoned quarry in folded Helderberg limestone
An abandoned quarry in folded Helderberg limestone
Structure-Folds
An abandoned quarry in folded Helderberg limestone, southwest of Jersey Shore
Abandoned quarry in folded Helderberg limestone
Abandoned quarry in folded Helderberg limestone
Structure-Folds
Abandoned quarry in folded Helderberg limestone, southwest of Jersey Shore
Anticlinal
Anticlinal
Structure-Folds
Anticlinal, Lewistown, just east of station., Small anticline, Lewistown just east of station. July 1921
Anticlinal nose in Setters Formation plunging under Cockeysville Marble.
Anticlinal nose in Setters Formation plunging under Cockeysville Marble.
Structure-Folds
Anticlinal nose in Setters Formation plunging under Cockeysville Marble, pointed hill southeast of Avondale, Coatesville quadrangle.
Anticline
Anticline
Structure-Folds
Anticline between poles 153-5 and 153-6 south of Mifflin.
Anticline bringing up Onondaga limestone
Anticline bringing up Onondaga limestone
Structure-Folds
Anticline bringing up Onondaga limestone, north of Thompsontown.
Anticline, in bright sun
Anticline, in bright sun
Structure-Folds
Anticline, in bright sun. Near Losh Run.
Anticline in Lerch Quarry
Anticline in Lerch Quarry
Structure-Folds
Anticline in Lerch Quarry, 50-75 feet high. Bethlehem
Anticline in limestone quarry
Anticline in limestone quarry
Structure-Folds
Anticline in limestone quarry. Precambrian limestone, probably Cockeysville, shows in photo. Eastburne Delaware, Wilmington quadrangle. Date of photograph not known. George Ashley's tenure with the Survey, 1919-1946., Anticline in limestone quarry. Eastburne Del. Wilmington Quad. Precambrian limestone, probably Cockeysville gneiss shows in photo. Wissahickon.
Anticline, in shadow cavity
Anticline, in shadow cavity
Structure-Folds
Anticline, in shadow cavity. Near Losh Run.
Anticline in slate quarry
Anticline in slate quarry
Structure-Folds
Anticline in slate quarry.
Bellefonte Lime Company
Bellefonte Lime Company
Structure-Folds
Bellefonte Lime Company, Salona. Shows slight bend in strata.
Bent strata
Bent strata
Structure-Folds
Bent strata, railroad cut west of Birmingham Station.
Between poles 153-7 and 153-8 below Mifflin
Between poles 153-7 and 153-8 below Mifflin
Structure-Folds
Between poles 153-7 and 153-8 below Mifflin.
Between poles 153-7 and 153-8 near Mifflin
Between poles 153-7 and 153-8 near Mifflin
Structure-Folds
Between poles 153-7 and 153-8 near Mifflin.
Bloomsburg red bed
Bloomsburg red bed
Structure-Folds
Bloomsburg red bed on Schuylkill River opposite Port Clinton.
Broad anticline
Broad anticline
Structure-Folds
Broad anticline, pole 153-16 near Mifflin.
Broad syncline in Salina rocks
Broad syncline in Salina rocks
Structure-Folds
Broad syncline in Salina rocks, pole 153-16 just below Mifflin.
Broad syncline in Salina rocks
Broad syncline in Salina rocks
Structure-Folds
Broad syncline in Salina rocks, pole 153-15 below Mifflin.