|Name||Ordovician, middle calcareous units|
Sedimentary > Carbonate > Limestone (Calcareous)Ordovician, middle calcareous units
|Comments||Only name given on printed map is Ordovician, followed by brief desciption "middle calcareous units". Brackets used to combine other units. Symbol is used in digital map. Undivided grouping of units: Trenton Group, Black River Group and St. Paul Group. Combined thickness: Northeastern 805-1350 ft, Western 1440 ft, Southeastern 975 ft.|
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||Berkeley - Jefferson|