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Nacatoch Sand

Nacatoch Sand
State Arkansas
Name Nacatoch Sand
Geologic age Phanerozoic | Mesozoic | Cretaceous-Late
Comments Unconsolidated quartz sand, fossiliferous sandy limestone, glauconitic sand, argillaceous sand, clay and marl. Approximately 400 ft. thick. Marl refers to loosley consolidated calcareous clays, silts and sands containing glauconite
Primary rock type sand
Secondary rock type limestone
Other rock types clay or mud; mixed clastic/carbonate
Lithologic constituents
Major
Sedimentary > Clastic > Sandstone (Bed)
Minor
Sedimentary > Carbonate > Limestone (Bed)
Sedimentary > Clastic > Mudstone (Bed)
Sedimentary > Carbonate > Marlstone (Bed)
Map references
Haley, B. R., Glick, E. E., Bush, W. V.; Clardy, B. F.; Stone, C. G.; Woodward, M. B., Zachry, D.L., 1993, Geologic Map of Arkansas: U.S.Geological Survey Special Geologic Map. Scale 1:500K
Unit references
Dane,C. H.,1929, Upper Cretaceous formations of southwestern Arkansas: Arkansas Geol. Survey Bull.1, 215 pp.
Counties Clark - Hempstead - Howard - Nevada