Geologic units in Clark county, Kentucky

Additional scientific data in this geographic area

Lexington Limestone (Ordovician) at surface, covers 45 % of this area

Lexington Limestone

Garrard Siltstone and Kope and Clays Ferry Formations, undivided (Ordovician) at surface, covers 24 % 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 12 % of this area

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

Drakes Formation (Ordovician) at surface, covers 8 % of this area

Drakes Formation

Crab Orchard Formation and Brassfield Dolomite, undivided (Silurian) at surface, covers 5 % of this area

Crab Orchard Formation and Brassfield Dolomite, undivided; locally includes Bisher Dolomite in Estill County

New Albany, Chattanooga, and Ohio Shales, Boyle Dolomite (Limestone), and Sellersburg Limestone, undivided (Devonian to Mississippian) at surface, covers 5 % of this area

New Albany, Chattanooga, and Ohio Shales, Boyle Dolomite (Limestone), and Sellersburg Limestone, undivided

High Bridge Group (Ordovician) at surface, covers 1 % of this area

High Bridge Group