Geologic units in Spencer county, Kentucky

Additional scientific data in this geographic area

Ashlock Formation, Grant Lake and Calloway Creek Limestones, and Fairview Formation, undivided (Ordovician) at surface, covers 48 % of this area

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

Garrard Siltstone and Kope and Clays Ferry Formations, undivided (Ordovician) at surface, covers 38 % of this area

Garrard Siltstone and Kope and Clays Ferry Formations, undivided

Drakes Formation (Ordovician) at surface, covers 11 % of this area

Drakes Formation

Alluvium (Pleistocene to Holocene) at surface, covers 3 % of this area

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