Nashville Group; Bigby-Cannon Limestone and Hermitage Formation

Nashville Group - Bigby-Cannon Limestone - Brownish-gray phosphatic calcarenite and light-gray to brownish-gray, cryptograined to medium- grained, even-bedded limestone. Thickness 50 to 125 feet; and Hermitage Formation - Thin-bedded to laminated, sandy and argillaceous limestone with shale; nodular shaly limestone; coquina; and phosphatic calcarenite. Thickness 50 to 100 feet.
State Tennessee
Name Nashville Group; Bigby-Cannon Limestone and Hermitage Formation
Geologic age Ordovician
Lithologic constituents
Major
Sedimentary > Carbonate > Limestone
Sedimentary > Clastic > Sandstone > Arenite > Calcarenite
Minor
Sedimentary > Clastic > Mudstone > Shale
Incidental
Sedimentary > Carbonate > Limestone > Coquina
Comments West-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 Bedford - Cannon - Coffee - Davidson - DeKalb - Giles - Hickman - Jackson - Lincoln - Macon - Marshall - Maury - Moore - Putnam - Rutherford - Smith - Sumner - Trousdale - Williamson - Wilson