Geologic units in Nicholas county, Kentucky

Garrard Siltstone and Kope and Clays Ferry Formations, undivided (Ordovician) at surface, covers 66 % of this area: Garrard Siltstone and Kope and Clays Ferry Formations, undivided
Lithology: shale; limestone; siltstone
Lexington Limestone (Ordovician) at surface, covers 24 % of this area: Lexington Limestone
Lithology: limestone; shale
Ashlock Formation, Grant Lake and Calloway Creek Limestones, and Fairview Formation, undivided (Ordovician) at surface, covers 10 % of this area: Ashlock Formation, Grant Lake and Calloway Creek Limestones, and Fairview Formation, undivided
Lithology: limestone; shale; siltstone