Ashlock Formation, Grant Lake and Calloway Creek Limestones, and Fairview Formation, undivided
Bull Fork Formation
Garrard Siltstone and Kope and Clays Ferry Formations, undivided
Alluvium; includes glacial deposits along the Ohio River and its tributaries west of Cannelton locks
Glacial deposits, undifferentiated; shown locally
Crab Orchard Formation and Brassfield Dolomite, undivided; locally includes Bisher Dolomite in Estill County
Limestone (60%) and shale (40%) interbedded; gray to bluish gray weathers light gray; planar to lenticular, thin to medium bedded; 0 to 80 feet thick.
Shale (75%) and limestone (25%) interbedded; gray to bluish gray weathers light gray to yellowish gray; planar, thin to thick bedded; 200 to 260 feet thick.