Stonehenge Limestone

Gray, thin-bedded to massive, fossiliferous limestone, largely mechanically deposited, with small black chert nodules and beds of "edgewise" conglomerate. The highly resistant Stoufferstown Limestone member is found at the base.
State West Virginia
Name Stonehenge Limestone
Geologic age Ordovician
Lithologic constituents
Major
Sedimentary > Carbonate > Limestone (Bed)gray, thin-bedded to massive, fossiliferous limestone, largely mechanically deposited
Minor
Sedimentary > Chemical > Chertwith small black chert nodules
Sedimentary > Clastic > Conglomerate (Bed)beds of ""edgewise"" conglomerate
Comments Thickness: Northeastern - Stonehenge 800 ft, Northeastern - Stoufferstown 200 ft.
References

Cardwell, D.H., Erwin, R.B., and Woodward, H.P., 1968 (slightly revised 1986), Geologic Map of West Virginia: West Virginia Geological and Economic Survey, Map 1, East Sheet, scale 1:250,000.

NGMDB product
Counties Berkeley - Jefferson