Nittany and Stonehenge/Larke Formations, undivided

Includes, in descending order, the Nittany (On) and Stonehenge/Larke (Osl) Formations.
State Pennsylvania
Name Nittany and Stonehenge/Larke Formations, undivided
Geologic age Ordovician
Lithologic constituents
Major
Sedimentary > Carbonate > Dolostone (Bed)Nittany Formation (On) and Larke Formation
Minor
Sedimentary > Carbonate > Limestone (Bed)
Incidental
Sedimentary > Clastic > Conglomerate (Bed)Stonehenge/Larke Formation (Osl): containing edgewise conglomerate; to the west.
Sedimentary > Chemical > Chert (Bed)Nittany Formation (On)
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