Cuyahoga Group

Medium-gray siltstone and dark-gray shale containing interbedded light-gray, flaggy sandstone. Includes, in descending order: Meadville Shale, Sharpsville Sandstone, and Orangeville Shale; marine fossils common.
State Pennsylvania
Name Cuyahoga Group
Geologic age Mississippian
Lithologic constituents
Sedimentary > Clastic > Mudstone > Shale (Bed)Includes, in descending order: Meadville Shale and Orangeville Shale; marine fossils common.
Sedimentary > Clastic > Siltstone (Bed)
Sedimentary > Clastic > Sandstone (Bed)interbedded light-gray, flaggy sandstone; Sharpsville Sandstone

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.

NGMDB product
Counties Crawford - Erie - Forest - Lawrence - Mercer - Venango - Warren