Spechty Kopf Formation

Light- to olive-gray, fine- to medium- grained, crossbedded sandstone, siltstone, and local polymictic diamictite, pebbly mudstone, and laminite; arranged in crude fining-upward cycles in some places; locally has grayish-red shale near top and conglomerate at base and in middle.
State Pennsylvania
Name Spechty Kopf Formation
Geologic age Mississippian and Devonian
Lithologic constituents
Major
Sedimentary > Clastic > Sandstone (Bed)Light- to olive-gray, fine- to medium- grained, crossbedded sandstone
Minor
Sedimentary > Clastic > Siltstone (Bed)
Sedimentary > Clastic > Mudstone (Bed)pebbly mudstone, and laminite; arranged in crude fining-upward cycles in some places
Incidental
Sedimentary > Clastic > Mudstone > Shale (Bed)locally has grayish-red shale near top
Sedimentary > Clastic > Conglomerate (Bed)local polymictic diamictite; conglomerate at base and in middle
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 - Perry - Schuylkill