|Geologic age||Mississippian and Devonian|
Sedimentary > Clastic > Mudstone > Shale (Bed)dark-gray shale; includes some carbonaceous shale
Sedimentary > Clastic > Sandstone (Bed)Buff, fine- to medium-grained, crossbedded, argillaceous sandstone
Sedimentary > Clastic > Conglomerate (Bed)sporadic conglomerate beds, and diamictite
Berg, T.M., Edmunds, W.E., Geyer, A.R., and others, compilers, 1980, Geologic map of Pennsylvania: Pennsylvania Geological Survey, 4th ser., Map 1, 2nd ed., 3 sheets, scale 1:250,000.
Pennsylvania Bureau of Topographic and Geologic Survey, Department of Conservation and Natural Resources, Miles, C.E., and Whitfield, T.G., compilers, 2001, Bedrock Geology of Pennsylvania, edition: 1.0, digital map, scale 1:250,000.
|Counties||Bedford - Blair - Cambria - Centre - Clearfield - Fulton - Huntingdon - Somerset|