Chattanooga Shale (Lower Mississippian and Upper Devonian), Clifty Limestone (Middle Devonian), and Penters Chert (Lower Devonian)

Chattanooga Shale (Lower Mississippian and Upper Devonian), Clifty Limestone (Middle Devonian), and Penters Chert (Lower Devonian)
State Arkansas
Name Chattanooga Shale (Lower Mississippian and Upper Devonian), Clifty Limestone (Middle Devonian), and Penters Chert (Lower Devonian)
Geologic age Early Mississippian to Early Devonian
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > Shale (Bed)
Sedimentary > Carbonate > Limestone (Bed)
Sedimentary > Carbonate > Dolostone (Bed)
Minor
Sedimentary > Chemical > Chert (Bed)
Sedimentary > Clastic > Sandstone (Bed)
Sedimentary > Clastic > Siltstone (Bed)
Comments Chattanooga Shale- mostly shale with minor sandstone and siltstone; Clifty Limestone-thin beds of sandy fossiliferous limestone; Penters Chert-dominantly dolomite with minor chert. Approximatly 50 ft. maximum thickness.
References

Craig W.W, Wise, O, and McFarland, J.D. III,1984, A guidebook to the post-St. Peter Ordovician and the Silurian and Devonian rocks of north-central Arkansas: Guidebook - Arkansas Geological Commission, vol.84-1, 49 pp.

NGMDB product
Counties Benton - Carroll - Independence - Izard - Lawrence - Madison - Sharp - Stone - Washington