Geologic units in Montgomery county, Kentucky

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

Garrard Siltstone and Kope and Clays Ferry Formations, undivided (Ordovician) at surface, covers 18 % of this area

Garrard Siltstone and Kope and Clays Ferry Formations, undivided

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 17 % 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

New Albany, Chattanooga, and Ohio Shales, Boyle Dolomite (Limestone), and Sellersburg Limestone, undivided (Devonian to Mississippian) at surface, covers 13 % of this area

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

Preachersville Member of Drakes Formation and Bull Fork Formation, undivided (Ordovician) at surface, covers 8 % of this area

Preachersville Member of Drakes Formation and Bull Fork Formation, undivided; in Bath and Montgomery Counties

Crab Orchard Formation and Brassfield Dolomite, undivided (Silurian) at surface, covers 6 % of this area

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

Drakes Formation (Ordovician) at surface, covers 4 % of this area

Drakes Formation

Breathitt Formation, lower part (Pennsylvanian) at surface, covers 0.8 % of this area

lower part which includes Livingston Conglomerate Member of Lee Formation in eastern Rockcastle County

Newman Limestone (Mississippian) at surface, covers 0.2 % of this area

Newman Limestone

Corbin Sandstone Member of Lee Formation (Pennsylvanian) at surface, covers 0.2 % of this area

Corbin Sandstone Member of Lee Formation

Lexington Limestone (Ordovician) at surface, covers < 0.1 % of this area

Lexington Limestone