Blakely Sandstone (Middle and Lower Ordovician)

Blakely Sandstone (Middle and Lower Ordovician)
State Arkansas
Name Blakely Sandstone (Middle and Lower Ordovician)
Geologic age Middle Ordovician to Early Ordovician
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > Shale (Bed)
Sedimentary > Clastic > Sandstone (Bed)
Minor
Sedimentary > Clastic > Conglomerate (Bed)
Comments Mostly grey shale (75%) with alternating beds of sandstone and minor conglomerate. Approximatly 500 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.

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.

NGMDB product
Counties Garland - Montgomery - Pulaski - Saline