|Name||Blakely Sandstone (Middle and Lower Ordovician)|
|Geologic age||Middle Ordovician to Early Ordovician|
Sedimentary > Clastic > Mudstone > Shale (Bed)
Sedimentary > Clastic > Sandstone (Bed)
Sedimentary > Clastic > Conglomerate (Bed)
|Comments||Mostly grey shale (75%) with alternating beds of sandstone and minor conglomerate. Approximatly 500 ft. maximum thickness.|
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.
|Counties||Garland - Montgomery - Pulaski - Saline|