Ordovician, middle calcareous units (WVOmc;0)

State	West Virginia
Name	Ordovician, middle calcareous units
Geologic age	Ordovician
Original map label	Omc
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.
Primary rock type	limestone
Secondary rock type
Other rock types
Lithologic constituents	Major Sedimentary > Carbonate > Limestone (Calcareous)Ordovician, middle calcareous units
Map references	Digital version of 1968 printed map available from http://wvgis.wvu.edu/data/data.php with the specific data available from http://wvgis.wvu.edu/data/dataset.php?action=search&ID=43 [http://wvgis.wvu.edu/data/data.php] [http://wvgis.wvu.edu/data/dataset.php?action=search&ID=43]
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.
Geographic coverage	Berkeley - Jefferson