Providence Sand, includes Perote Member
Eocene and Oligocene Residuum, undifferentiated
Nanafalia, Porters Creek, and Clayton Formations, undifferentiated
As mapped includes lower Eocene Bashi Marl Member of the Hatchetigbee Formation
Stream alluvium and undifferentiated terrace deposits
Up-dip equivalent of Lisbon and Tallahatta Formations
Varicolored fine to coarse quartz sand containing clay lenses and gravel in places. Gravel composed of quartz and chert pebbles and assorted metmorphic and igneous rock fragments in streams near the Piedmont. In areas of the Valley and Ridge province gravel composed of angular to subrounded chert, quartz, and quartzite pebbles. Coastal deposits include fine to medium quartz sand with shell fragments and accessory heavy minerals along Gulf beaches and fine to medium quartz sand, silt, clay, peat, mud and ooze in the Mississippi Sound, Little Lagoon, bays, lakes, streams, and estuaries.
Cross-bedded, medium to coarse sand; glauconitic, fossiliferous fine sand; and dark-gray fossiliferous, micaceous, carbonaceous clay. The member occurs at the base of the Ripley Formation and extends from Georgia westward into Montgomery County where it merges with the Demopolis Chalk.