|Name||Atoka Formation - Lower part|
|Geologic age||Middle Pennsylvanian- Atokan|
Sedimentary > Clastic > Sandstone (Bed)
Sedimentary > Clastic > Mudstone > Shale (Bed)
|Comments||Multiple sandstone units seperated by shale beds. Approximatly 2000 ft. maximum thickness.|
Taff, J.A., 1901, A comparison of the Ouachita and Arbuckle Mountain sections, Indiana Terr.: Science, pp.271-272.
Wilson, C.W., 1935, Age and correlation of Pennsylvanian surface formations and of oil and gas sands of Muskogee County, Oklahoma: AAPG Bull. 19, no. 4, pp 503-520.
Sutherland, P.K., and Henry, T,.1977, Carbonate platform facies and new stratigraphic nomenclature of the Morrowan Series (lower and middle Pennsylvanian), northeastern Oklahoma: Geo. Soc.of Amer. Bull., vol.88, no.3, pp.425-440.
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.
|Counties||Clark - Faulkner - Franklin - Logan - Lonoke - Perry - Pike - Polk - Pulaski - Scott - Sebastian - Yell|