| State | Pennsylvania |
|---|---|
| Name | Llewellyn Formation |
| Geologic age | Pennsylvanian |
| Lithologic constituents |
Major
Sedimentary > Clastic > Sandstone (Bed)Gray, fine- to coarse-grained sandstone
Minor
Sedimentary > Clastic > Siltstone (Bed)
Sedimentary > Coal > Anthracite (Bed)numerous anthracite coals in repetitive sequences
Sedimentary > Clastic > Mudstone > Shale (Bed)
Incidental
Sedimentary > Clastic > Conglomerate (Bed)
|
| 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 | Carbon - Columbia - Dauphin - Lackawanna - Lebanon - Luzerne - Northumberland - Schuylkill - Susquehanna - Wayne |