Nashville and Stones River Groups undifferentiated (ALOnvsr;3)

Nashville and Stones River Groups undifferentiated

Medium to dark-gray fossiliferous limestone, argillaceous in part; yellowish-gray laminated silty limestone in upper part. Contains one or more thin beds of bentonite and bentonitic shale.

State	Alabama
Name	Nashville and Stones River Groups undifferentiated
Geologic age	Ordovician
Lithologic constituents	Major Sedimentary > Carbonate > Limestonemedium to dark-gray fossiliferous limestone, argillaceous in part; yellowish-gray laminated silty limestone in upper part Incidental Sedimentary > Clastic > Mudstone > Shalebentonitic shale Sedimentary > Clastic > Mudstone > Claystone > BentoniteContains one or more thin beds of bentonite and bentonitic shale.
References	Szabo, M.W., Osborne, E.W., Copeland, C.W. Jr., and Neathery, T.L., 1988, Geologic Map of Alabama, Geological Survey of Alabama Special Map 220, scale 1:250,000.
NGMDB product	NGMDB product page for 55859
Counties	Blount - Jackson - Marshall