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Geologic units in Marion county, Kentucky

New Albany, Chattanooga, and Ohio Shales, Boyle Dolomite (Limestone), and Sellersburg Limestone, undivided (Devonian to Mississippian) at surface, covers 38 % of this area

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

Lithology: shale; siltstone; sandstone

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

Garrard Siltstone and Kope and Clays Ferry Formations, undivided

Lithology: shale; limestone; siltstone

Salem, Warsaw, and Harrodsburg Limestones, undivided (Mississippian) at surface, covers 9 % of this area

Salem, Warsaw, and Harrodsburg Limestones, undivided

Drakes Formation and Grant Lake and Calloway Creek Limestones, undivided (Ordovician) at surface, covers 6 % of this area

Drakes Formation and Grant Lake and Calloway Creek Limestones, undivided; in Boyle, Casey, and Marion Counties

Renfro and Muldraugh Members of Borden Formation and Fort Payne Formation, undivided (Mississippian) at surface, covers 5 % of this area

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

Alluvium (Pleistocene to Holocene) at surface, covers 5 % of this area

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

Lithology: sand; silt; glacial drift

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

Drakes Formation

Ashlock Formation, Grant Lake and Calloway Creek Limestones, and Fairview Formation, undivided (Ordovician) at surface, covers 3 % of this area

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

Lithology: limestone; shale; siltstone

Ste. Genevieve and St. Louis Limestones, undivided (Mississippian) at surface, covers 1 % of this area

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

Laurel Dolomite, Osgood Formation, and Brassfield Dolomite, undivided (Silurian) at surface, covers 0.2 % of this area

Laurel Dolomite, Osgood Formation, and Brassfield Dolomite, undivided