McAlester Formation

McAlester Formation
State Arkansas
Name McAlester Formation
Geologic age Middle Pennsylvanian- Des Moinesian
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > Shale (Bed)
Sedimentary > Clastic > Sandstone (Bed)
Incidental
Sedimentary > Coal (Bed)
Comments Shale with interbedded sandstone and some economic coal beds. Approximatly 1800 ft. maximum thickness.
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.

Haley, B.R., 1960, Coal resources of Arkansas: U. S. Geological Survey Bull., Report: B 1072-P, pp.795-831

https://pubs.er.usgs.gov/publication/b1072P

NGMDB product
Counties Conway - Crawford - Franklin - Johnson - Logan - Perry - Pope - Scott - Sebastian - Yell