| 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 |