Pennsylvania Geological Survey - Historical Photographs

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  • Subject = Engineering Geology

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This collection includes photographs from the Pennsylvania Geological Survey Historical Photographs Collection.
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Base of pier failure in limestone collapse
Base of pier failure in limestone collapse
Engineering Geology
Base of pier failure in limestone collapse, new Rt. 222 between Lancaster and Ephrata.
Base of pier failure in limestone collapse
Base of pier failure in limestone collapse
Engineering Geology
Base of pier failure in limestone collapse, new Rt. 222 between Lancaster and Ephrata.
Base of pier failure in limestone collapse
Base of pier failure in limestone collapse
Engineering Geology
Base of pier failure in limestone collapse, new Rt. 222 between Lancaster and Ephrata.
Base of pier failure in limestone collapse
Base of pier failure in limestone collapse
Engineering Geology
Base of pier failure in limestone collapse, new Rt. 222 between Lancaster and Ephrata.
Beaver dam in Prouty Creek
Beaver dam in Prouty Creek
Engineering Geology
Beaver dam in Prouty Creek, Summit Township.
Beltzville Dam
Beltzville Dam
State Parks, Surface Water, Engineering Geology
Beltzville Dam, view from downstream
Black Moshannon State Park dam
Black Moshannon State Park dam
Surface Water, Engineering Geology
Black Moshannon State Park dam
Boulder field
Boulder field
Engineering Geology
Boulder field, diabase weathered to surface; topographic expression in southeastern Dauphin County.
Boulder field
Boulder field
Engineering Geology
Boulder field, diabase weathered to surface; topographic expression in southeastern Dauphin County.
Bridge (L.R. 1010, Sec. D1) across Schuylkill River
Bridge (L.R. 1010, Sec. D1) across Schuylkill River
Engineering Geology
Bridge (L.R. 1010, Sec. D1) across Schuylkill River, West Conshohocken Borough, Norristown 7.5 minute quadrangle., Foundation rock is pinnacled Conestoga limestone beneath channel and flood plain deposits. Looking northeast. Structure supported by caissons.
Bridge over Conewago Creek
Bridge over Conewago Creek
Engineering Geology
Bridge over Conewago Creek, south of Hampton. Mostly Triassic sandstone, piers partly diabase.
Bridge over failure due to collapse of leached limestone zone along fault
Bridge over failure due to collapse of leached limestone zone along fault
Engineering Geology
Bridge over failure due to collapse of leached limestone zone along fault, Route 222
Cheat Haven Dam
Cheat Haven Dam
Engineering Geology
Cheat Haven Dam, West Virginia.
Cheat Haven Dam
Cheat Haven Dam
Engineering Geology
Cheat Haven Dam, West Virginia.
Cheat Haven Dam from bank above power house
Cheat Haven Dam from bank above power house
Engineering Geology
Cheat Haven Dam from bank above power house, West Virginia.
Civilian Conservation Corps (CCC) dam in 14-mile narrows
Civilian Conservation Corps (CCC) dam in 14-mile narrows
Engineering Geology
Civilian Conservation Corps (CCC) dam in 14-mile narrows, north of Mifflinburg.
Civilian Conservation Corps (CCC) dam in 14-mile narrows
Civilian Conservation Corps (CCC) dam in 14-mile narrows
Engineering Geology
Civilian Conservation Corps (CCC) dam in 14-mile narrows, north of Mifflinburg.
Clarks Creek dam
Clarks Creek dam
Engineering Geology
Clarks Creek dam, weep wall at lower toe, rolled fill on left
Clarks Creek dam
Clarks Creek dam
Engineering Geology
Clarks Creek dam, upper toe of Pottsville float. Trench for core wall below cranes
Clarks Creek dam
Clarks Creek dam
Engineering Geology
Clarks Creek dam. Sandstone in shale at concrete bypass, north side of creek