Geologic units in Garrard county, Kentucky

Ashlock Formation, Grant Lake and Calloway Creek Limestones, and Fairview Formation, undivided (Ordovician) at surface, covers 29 % 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 25 % of this area

Garrard Siltstone and Kope and Clays Ferry Formations, undivided

Lexington Limestone (Ordovician) at surface, covers 12 % of this area

Lexington Limestone

Drakes Formation (Ordovician) at surface, covers 9 % of this area

Drakes Formation

High Bridge Group (Ordovician) at surface, covers 8 % of this area

High Bridge Group

Wildie, Nada, Halls Gap, Holtsclaw Siltstone, Cowbell, Nancy, Kenwood Siltstone, New Providence Shale, Sunbury Shale, Berea Sandstone, and Bedford Shale, undivided; Borden Formation locally includes Renfro Member in eastern Kentucky (Devonian to Mississippian) at surface, covers 7 % of this area

Wildie, Nada, Halls Gap, Holtsclaw Siltstone, Cowbell, Nancy, Kenwood Siltstone, New Providence Shale, Sunbury Shale, Berea Sandstone, and Bedford Shale, undivided; Borden Formation locally includes Renfro Member in eastern Kentucky

Crab Orchard Formation and Brassfield Dolomite, undivided (Silurian) at surface, covers 4 % 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 3 % of this area

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

Breathitt Formation, middle part (Pennsylvanian) at surface, covers 2 % of this area

Breathitt Formation, middle part

Renfro and Muldraugh Members of Borden Formation and Fort Payne Formation, undivided (Mississippian) at surface, covers 0.2 % of this area

Renfro and Muldraugh Members of Borden Formation and Fort Payne Formation, undivided

Porters Creek Clay (Paleocene) at surface, covers 0.1 % of this area

Porters Creek Clay