Bellefonte and Axemann Formations, undivided

Includes, in descending order, the Bellefonte (Obf) and Axemann (Oa) Formations.
State Pennsylvania
Name Bellefonte and Axemann Formations, undivided
Geologic age Ordovician
Lithologic constituents
Major
Sedimentary > Carbonate > Dolostone (Bed)Obf: medium-bedded dolomite
Sedimentary > Carbonate > Limestone (Bed)Oa: medium-gray fossiliferous limestone
Minor
Sedimentary > Clastic > Sandstone (Bed)Obf
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 - Huntingdon