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Maccrady Formation

Maccrady Formation - red shale and mudrock, red and green sandstone, and minor limestone. Present only from Pendleton County southward. Contains rock salt and gypsum in southwestern Virginia.
State West Virginia
Name Maccrady Formation
Geologic age Mississippian
Comments Thickness: Southeastern 0-350 ft
Primary rock type shale
Secondary rock type sandstone
Other rock types mudstone; limestone; chemical
Lithologic constituents
Sedimentary > Clastic > Mudstone > Shalered shale and mudrock
Sedimentary > Clastic > Sandstone
Sedimentary > Carbonate > Limestone
Sedimentary > Clastic > Mudstonered shale and mudrock
Sedimentary > Chemical > Evaporite > Gypsumcontains rock salt and gypsum is southwestern Virginia.
Sedimentary > Chemical > Evaporite > Saltcontains rock salt and gypsum is southwestern Virginia.
Map references
Digital version of 1968 printed map available from with the specific data available from
Unit 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.
Counties Greenbrier - Monroe - Pocahontas