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Lock Haven Formation

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Interbedded olive-gray mudstone, siltstone, sandstone, and thin conglomerate; marine fossils throughout; "Chemung" of earlier workers. Laterally equivalent to Scherr and Foreknobs Formations.
State Pennsylvania
Name Lock Haven Formation
Geologic age Devonian
Lithologic constituents
Major
Sedimentary > Clastic > Sandstone (Bed)marine fossils throughout
Sedimentary > Clastic > Mudstone (Bed)marine fossils throughout
Sedimentary > Clastic > Siltstone (Bed)marine fossils throughout
Minor
Sedimentary > Clastic > Conglomerate (Bed)marine fossils throughout
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 Blair - Bradford - Cameron - Centre - Clinton - Lycoming - McKean - Potter - Sullivan - Susquehanna - Tioga