|Name||Berea Sandstone through Venango Formation, undivided|
Sedimentary > Clastic > Mudstone > Shale (Bed)becoming more shaly and more gray downward; Includes, in descending order: Bedford Shale, Riceville Shale, and Venango Formation equivalent; contains marine fossils.
Sedimentary > Clastic > Sandstone (Bed)greenish-yellow and gray sandstone; Venango not mapped separately because upper key bed (Woodcock Sandstone) is missing. Includes, in descending order: Berea Sandstone, Cussewago Sandstone, and Venango Formation equivalent; contains marine fossils.
Sedimentary > Clastic > Siltstone (Bed)
Sedimentary > Clastic > Conglomerate (Bed)bottom of interval is bottom of Panama Conglomerate
|Comments||Digital map differences from 1980 printed map: age changed from Mississippian and Devonian to Devonian; map symbol changed from MDbv to Dbv.|
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||Crawford - Erie - Mercer|