Geologic units in Neshoba county, Mississippi

Tallahatta formation and Neshoba sand (Eocene) at surface, covers 17 % of this area: Tallahatta formation and Neshoba sand - (Claiborne group), Southeast of Pearl River predominantly more or less glauconitic claystone and clay with lenses of sand and some sandstone; highly cross-bedded sand at base; northwest of Pearl river predominantly sand, locally glauconitic, containing claystone and clay lenses and abundant clay stringers; Neshoba sand, sparingly glauconitic fairly coarse sand not recognized southeast of Newton County or north of Yalobusha River.
Lithology: claystone; clay or mud; sand; sandstone
Zilpha formation and Winona formation (Eocene) at surface, covers 15 % of this area: Zilpha formation and Winona formation - (Claiborne group), Zilpha clay, chocolate-colored clay containing some glauconitic sand, not recognized north of Yalobusha River; Winona sand, highly glauconitic sand, more or less clayey.
Lithology: sand; clay or mud
Wilcox formation (Eocene) at surface, covers 58 % of this area: Wilcox formation - Irregularly bedded fine to coarse sand, more or less lignitic clay and lignite; includes bauxite bearing Fearn Springs sand member at base.
Lithology: clay or mud; sand; coal
Kosciusko formation (Eocene) at surface, covers 11 % of this area: Kosciusko formation - (Claiborne group), irregularly bedded sand, clay, and some quartzite.
Lithology: sand; clay or mud; quartzite