|Name||Atoka Formation - Upper part|
|Geologic age||Middle Pennsylvanian- Atokan|
Sedimentary > Clastic > Sandstone (Bed)
Sedimentary > Clastic > Mudstone > Shale (Bed)
|Comments||Sandstone alternating with thick intervals of shale. Approximatly 3000 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||Conway - Faulkner - Franklin - Logan - Lonoke - Perry - Pope - Pulaski - Scott - Sebastian - White - Yell|