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Carnahan Bayou Member

yellow to gray siltstones, sandstones, and clays with thin tuffaceous beds; some lenses of black chert gravel; petrified wood locally.
State Louisiana
Name Carnahan Bayou Member
Geologic age Phanerozoic | Cenozoic | Tertiary | Miocene
Comments Member of the Fleming FM.
Primary rock type siltstone
Secondary rock type sandstone
Other rock types clay or mud; tuff; gravel
Lithologic constituents
Major
Sedimentary > Clastic > Siltstone (Bed)
Sedimentary > Clastic > Sandstone (Bed)
Unconsolidated > Fine-detrital > Clay (Bed)
Incidental
Igneous > Volcanic
Unconsolidated > Coarse-detrital > Gravel
Map references
United States Geological Survey, 1998, Digital Overlay of the Geologic Map of Louisiana: U.S. Geological Survey, Biological Resources Division, National Wetlands Research Center, Product Id USGS-NWRC 1984-02-0001, http://www.nwrc.usgs.gov/.
Unit references
United States Geological Survey, 1998, Digital Overlay of the Geologic Map of Louisiana: U.S. Geological Survey, Biological Resources Division, National Wetlands Research Center, Product Id USGS-NWRC 1984-02-0001, http://www.nwrc.usgs.gov/.
Counties Grant - La Salle - Natchitoches - Rapides - Sabine - Vernon