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Knox Group undifferentiated

Knox Group undifferentiated - Light-gray to light-brown locally sandy dolomite, dolomitic limestone, and limestone; characterized by abundant light-colored chert.
StateAlabama
NameKnox Group undifferentiated
Geologic ageOrdovician-Cambrian
Original map labelOCk
Primary rock typedolostone (dolomite)
Secondary rock typelimestone
Other rock typeschert
Lithologic constituents
Major
Sedimentary > Carbonate > Limestone
Sedimentary > Carbonate > Dolostone
Minor
Sedimentary > Chemical > Chert
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.
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.
Geographic coverageCalhoun - Cherokee - Cleburne - DeKalb - Etowah - Jackson - Jefferson - Saint Clair - Shelby - Talladega

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