Vicksburg Group (undifferentiated)

Brown to gray liginitic clays with thin interbeds of lignite or micaceous sands; calcareous shale, petrified wood, and bluish fossilferous clay locally.
State Louisiana
Name Vicksburg Group (undifferentiated)
Geologic age Oligocene
Lithologic constituents
Unconsolidated > Coarse-detrital > Sand (Bed)
Unconsolidated > Fine-detrital > Clay (Bed)
Sedimentary > Coal > Lignite (Bed)
Sedimentary > Clastic > Mudstone > Shale (Calcareous)

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 - Sabine - Vernon