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Colvin Mountain Sandstone

Colvin Mountain Sandstone - light-gray quartzose sandstone, pebbly in part. Locally contains thin beds of bentonite in the upper part.
StateAlabama
NameColvin Mountain Sandstone
Geologic ageOrdovician
Original map labelOcm
Primary rock typesandstone
Secondary rock typebentonite
Other rock types
Lithologic constituents
Major
Sedimentary > Clastic > Sandstonequartzose sandstone, pebbly in part
Minor
Sedimentary > Clastic > Mudstone > Claystone > Bentonite (Bed)Locally contains thin beds of bentonite in the upper part.
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 - Etowah - Saint Clair

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