Attalla Chert Conglomerate Member of the Chickamauga Limestone

Conglomerate of pebbles, cobbles, and boulders of chert and rare dolomite and quartzite in a sand-sized chert and quartz matrix; thin beds of gray-green or dusky-red shale common at base.
State Alabama
Name Attalla Chert Conglomerate Member of the Chickamauga Limestone
Geologic age Ordovician
Lithologic constituents
Major
Sedimentary > Clastic > Conglomerateconglomerate of pebbles, cobbles, and boulders of chert and rare dolomite and quartzite in a sand-sized chert and quartz matrix
Minor
Sedimentary > Chemical > Chertconglomerate of pebbles, cobbles, and boulders of chert and rare dolomite and quartzite in a sand-sized chert and quartz matrix
Sedimentary > Clastic > Mudstone > Shalethin beds of gray-green or dusky-red shale common at base
Incidental
Sedimentary > Carbonate > Dolostoneconglomerate of pebbles, cobbles, and boulders of chert and rare dolomite and quartzite in a sand-sized chert and quartz matrix
Metamorphic > Metasedimentary > Metaclastic > Quartziteconglomerate of pebbles, cobbles, and boulders of chert and rare dolomite and quartzite in a sand-sized chert and quartz matrix
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
Counties Blount - Etowah - Jefferson