Attalla Chert Conglomerate Member of the Chickamauga Limestone (ALOca;5)

State	Alabama
Name	Attalla Chert Conglomerate Member of the Chickamauga Limestone
Geologic age	Ordovician
Original map label	Oca
Primary rock type	conglomerate
Secondary rock type	chert
Other rock types	dolostone (dolomite); quartzite; shale
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 Metamorphic > Metasedimentary > Metaclastic > Quartziteconglomerate of pebbles, cobbles, and boulders of chert and rare dolomite and quartzite in a sand-sized chert and quartz matrix Sedimentary > Carbonate > Dolostoneconglomerate of pebbles, cobbles, and boulders of chert and rare dolomite and quartzite in a sand-sized chert and quartz matrix
Map references	Szabo, M. W., Osborne, E. W., Copeland, C. W. Jr., Neathery; T. L., 1988, Geologic Map of Alabama, Geological Survey of Alabama Special Map 220, scale 1:250,000. [http://www.ogb.state.al.us/ogb/ogb_gisdata/algeomap.zip]
Unit references	Szabo, M. W., Osborne, E. W., Copeland, C. W. Jr., Neathery; T. L., 1988, Geologic Map of Alabama, Geological Survey of Alabama Special Map 220, scale 1:250,000. [http://www.ogb.state.al.us/ogb/ogb_gisdata/algeomap.zip]