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Little Oak Limestone

Little Oak Limestone - dark-gray medium to thick-bedded fossiliferous, argillaceous to silty limestone containing chert nodules. Locally includes thin beds of bentonite in the upper part.
StateAlabama
NameLittle Oak Limestone
Geologic ageOrdovician
Original map labelOlo
Primary rock typelimestone
Secondary rock typechert
Other rock typesbentonite
Lithologic constituents
Major
Sedimentary > Carbonate > Limestone (Bed)dark-gray medium to thick-bedded fossiliferous, argillaceous to silty limestone
Minor
Sedimentary > Chemical > Chertchert nodules
Incidental
Sedimentary > Clastic > Mudstone > Claystone > Bentonite (Bed)
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 - Shelby

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URL: http://mrdata.usgs.gov/geology/state/sgmc-unit.php?unit=ALOlo;6
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