Womble Shale (Middle Ordovician) (AROw;0)

State	Arkansas
Name	Womble Shale (Middle Ordovician)
Geologic age	Phanerozoic \| Paleozoic \| Ordovician-Middle
Original map label	Ow
Comments	80% black shale with thin beds of limestone and sandstone. Approximately 2500 ft. maximum thickness.
Primary rock type	shale
Secondary rock type	limestone
Other rock types	sandstone
Lithologic constituents	Major Sedimentary > Clastic > Mudstone > Shale > Black-shale (Bed) Minor Sedimentary > Clastic > Sandstone (Bed) Sedimentary > Carbonate > Limestone (Bed)
Map references	Haley, B. R., Glick, E. E., Bush, W. V.; Clardy, B. F.; Stone, C. G.; Woodward, M. B., Zachry, D.L., 1993, Geologic Map of Arkansas: U.S.Geological Survey Special Geologic Map. Scale 1:500K
Unit references	Ferguson, J.G., 1920. Outlines of the geology, soils, and minerals of the State of Arkansas: Arkansas State Bureau of Mines, Manufactures and Agriculture,192 pp. Stone, C. G. and Bush, W. V. 1982, Summary of the geology of the eastern Ouachita Mountains, Arkansas: Guidebook - Arkansas Geological Commission, vol.82-2, 24 pp.
Geographic coverage	Garland - Hot Spring - Montgomery - Polk - Pulaski - Saline