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Catahoula Formation

gray to white sandstones; loose quartz sand, tuffaceous sandstone, volcanic ash, and brown sandy clays; petrified wood locally.
StateLouisiana
NameCatahoula Formation
Geologic agePhanerozoic | Cenozoic | Tertiary | Oligocene
Original map labelOc
CommentsLower member of the Fleming FM.
Primary rock typesandstone
Secondary rock typesand
Other rock typesvolcanic ash
Lithologic constituents
Major
Igneous > Volcanic (Pyroclastic, air fall)
Sedimentary > Clastic > Sandstone (Bed)
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/.
Geographic coverageCatahoula - Grant - La Salle - Natchitoches - Rapides - Sabine - Vernon

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