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GULFIAN SERIES

GULFIAN SERIES - Owl Creek Formation - massive, sandy, micaceous, fossilliferous, glauconitic marine clay, max 100 ft. McNairy Formation - unconsolidated sandstone with clay and gravel lenses, max of 250 ft.
State Missouri
Name GULFIAN SERIES
Geologic age Phanerozoic | Mesozoic | Cretaceous-Late [Gulfian]
Primary rock type sandstone
Secondary rock type clay or mud
Other rock types gravel
Lithologic constituents
Major
Sedimentary > Carbonate > Marlstone (Bed)marl refers to loosley consolidated calcareous clays, silts and sands containing glauconite
Minor
Sedimentary > Clastic > Mudstone (Lense)
Incidental
Sedimentary > Clastic > Conglomerate (Bed)
Map references
Middendorf, M. A., and others, 2003, Geologic Map of Missouri: Missouri Geological Survey. Scale 1:500K
Unit references
Howe, W. B. and Koenig, 1961, The Stratigraphic Succession in Missouri: Missouri Geological Survey and Water Resources, Vol XL. 2nd Series.
Counties Bollinger - Scott - Stoddard