Geologic units in Allen county, Kentucky

Renfro and Muldraugh Members of Borden Formation and Fort Payne Formation, undivided (Mississippian) at surface, covers 39 % of this area

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

Salem, Warsaw, and Harrodsburg Limestones, undivided (Mississippian) at surface, covers 37 % of this area

Salem, Warsaw, and Harrodsburg Limestones, undivided

Ste. Genevieve and St. Louis Limestones, undivided (Mississippian) at surface, covers 10 % of this area

Ste. Genevieve and St. Louis Limestones, undivided; includes Salem Limestone west of Christian County

New Albany, Chattanooga, and Ohio Shales, Boyle Dolomite (Limestone), and Sellersburg Limestone, undivided (Devonian to Mississippian) at surface, covers 7 % of this area

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

Laurel Dolomite, Osgood Formation, and Brassfield Dolomite, undivided (Silurian) at surface, covers 2 % of this area

Laurel Dolomite, Osgood Formation, and Brassfield Dolomite, undivided

Alluvium (Pleistocene to Holocene) at surface, covers 2 % of this area

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

Louisville Limestone and Waldron Shale, undivided (Silurian) at surface, covers 0.8 % of this area

Louisville Limestone and Waldron Shale, undivided

Cumberland Formation and Leipers and Catheys (?) Limestones, undivided (Ordovician) at surface, covers 0.4 % of this area

Cumberland Formation and Leipers and Catheys (?) Limestones, undivided; in southernmost Kentucky