Ridley Limestone

Medium- to very thick-bedded, fine- to medium-grained, gray dolomitic limestone, with prominent greenish-gray calcareous shale and shaly limestone unit in middle. Thickness 200 to 275 feet.
State Tennessee
Name Ridley Limestone
Geologic age Ordovician
Lithologic constituents
Sedimentary > Carbonate > Limestonedolomitic limestone
Sedimentary > Clastic > Mudstone > Shale (Calcareous)
Comments East-Central sheet

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 - Cumberland - Marion - Sequatchie