Bull Fork Formation
Ashlock Formation, Grant Lake and Calloway Creek Limestones, and Fairview Formation, undivided
Garrard Siltstone and Kope and Clays Ferry Formations, undivided
Glacial deposits, undifferentiated; shown locally
Alluvium; includes glacial deposits along the Ohio River and its tributaries west of Cannelton locks
Shale and thin skeletal limestone
Micritic and skeletal limestone
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.