Catahoula Formation

Gray to white sandstones; loose quartz sand, tuffaceous sandstone, volcanic ash, and brown sandy clays; petrified wood locally.
State Louisiana
Name Catahoula Formation
Geologic age Oligocene
Lithologic constituents
Sedimentary > Clastic > Sandstone (Bed)
Igneous > Volcanic (Pyroclastic-air fall)
Unconsolidated > Coarse-detrital > Sand
Unconsolidated > Fine-detrital > Clay (Bed)
Comments Lower member of the Fleming FM.

Snead, J.I., and Mcculloh, R.P., 1984, Geologic Map of Louisiana: Louisiana Geological Survey, scale 1:500,000.

NGMDB product
Counties Catahoula - Grant - La Salle - Natchitoches - Rapides - Sabine - Vernon