Sequatchie Formation, Leipers Formation, Inman Formation and Catheys Formation

Sequatchie Formation - Greenish-gray calcareous shale, mudstone, and argillaceous limestone; dolomitic, laminated, and sandy. Thickness 0 to 165 feet; Leipers Formation - Nodular, shaly limestone and fine- to coarse-grained limestone. Thickness 0 to 150 feet; Inman Formation - Thin-bedded to laminated, fine-grained, greenish-gray limestone interbedded with red and green calcareous shale beds. Thickness 0 to 50 feet. (Present only in Sequatchie Valley.); and Catheys Formation - Nodular, shaly, thin- to medium-bedded limestone and fine- to coarse-grained limestone. Thickness 125 to 400 feet.
State Tennessee
Name Sequatchie Formation, Leipers Formation, Inman Formation and Catheys Formation
Geologic age Ordovician
Lithologic constituents
Major
Sedimentary > Carbonate > Limestonelocally dolomitic
Minor
Sedimentary > Clastic > Mudstone > Shale (Calcareous)
Incidental
Sedimentary > Clastic > Mudstone
Comments East-Central sheet
References

Greene, D.C., and Wolfe, W.J., 2000, Superfund GIS - 1:250,000 Geology of Tennessee, USGS, (geo250k).

Hardeman, W.D., Miller, R.A., and Swingle, G.D., 1966, Geologic Map of Tennessee: Division of Geology, Tennessee Department of Environment and Conservation, 4 sheets, scale 1:250,000

NGMDB product
Counties Bledsoe - Cannon - Clay - Cumberland - DeKalb - Jackson - Macon - Marion - Overton - Putnam - Sequatchie - Smith - Warren - White