Pennsylvania Geological Survey - Historical Photographs

Active Filters:
  • Location Covered = Dauphin
  • Subject = Engineering Geology

About This Collection

This collection includes photographs from the Pennsylvania Geological Survey Historical Photographs Collection.
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Contributing Institution
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.
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
Clarks Creek dam
Clarks Creek dam
Engineering Geology
Clarks Creek dam. Trench for core wall north slope, in Mauch Chunk beds, dipping 60 degrees toward camera
Clarks Creek dam
Clarks Creek dam
Engineering Geology
Clarks Creek dam, center line, core wall with grouting pipes in foreground
Diabase float from dike
Diabase float from dike
Engineering Geology
Diabase float from dike, southern Dauphin County
Diabase float from dike
Diabase float from dike
Engineering Geology
Diabase float from dike, southern Dauphin County