Coburn Formation through Loysburg Formation, undivided

Includes, in descending order, the Coburn Formation through Nealmont Formation, undivided (Ocn) and Benner Formation through Loysburg Formation, undivided (Obl).
State Pennsylvania
Name Coburn Formation through Loysburg Formation, undivided
Geologic age Ordovician
Lithologic constituents
Major
Sedimentary > Carbonate > Dolostone (Bed)Obl
Sedimentary > Clastic > Mudstone > Shale (Bed, Calcareous)Ocn
Sedimentary > Carbonate > Limestone (Bed)
Minor
Sedimentary > Clastic > Mudstone > Claystone > Bentonite (Bed)Ocn and Obl: metabentonite beds
Sedimentary > Clastic > Sandstone > Arenite > Calcarenite (Bed)Ocn: Nealmont Formation--medium-gray fossiliferous limestone (calcarenite--Rodman Member)
References

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 Bedford - Blair - Centre - Fulton - Huntingdon