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Brownstown Marl

Brownstown Marl
StateArkansas
NameBrownstown Marl
Geologic agePhanerozoic | Mesozoic | Cretaceous-Late
Original map labelKb
CommentsDark gray calcareous clay (marl), sandy marl and fine grained sand with some limestone. Approximately 250 ft. thick. Marl refers to loosley consolidated calcareous clays, silts and sands containing glauconite
Primary rock typemixed clastic/carbonate
Secondary rock typesand
Other rock typeslimestone
Lithologic constituents
Major
Sedimentary > Clastic > Sandstone (Bed)
Sedimentary > Carbonate > Marlstone (Bed)
Minor
Sedimentary > Carbonate > Limestone (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.
Geographic coverageClark - Hempstead - Hot Spring - Howard - Little River - Pike - Sevier

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