Geologic units in Gallatin county, Kentucky

Garrard Siltstone and Kope and Clays Ferry Formations, undivided (Ordovician) at surface, covers 50 % of this area

Garrard Siltstone and Kope and Clays Ferry Formations, undivided

Ashlock Formation, Grant Lake and Calloway Creek Limestones, and Fairview Formation, undivided (Ordovician) at surface, covers 33 % of this area

Ashlock Formation, Grant Lake and Calloway Creek Limestones, and Fairview Formation, undivided

Alluvium (Pleistocene to Holocene) at surface, covers 9 % of this area

Alluvium; includes glacial deposits along the Ohio River and its tributaries west of Cannelton locks

Glacial deposits, undifferentiated (Pleistocene to Holocene) at surface, covers 5 % of this area

Glacial deposits, undifferentiated; shown locally

Bull Fork Formation (Ordovician) at surface, covers 3 % of this area

Bull Fork Formation

Lexington Limestone (Ordovician) at surface, covers 0.6 % of this area

Micritic and skeletal limestone