Geologic units in Crittenden county, Kentucky

Additional scientific data in this geographic area

Ste. Genevieve and St. Louis Limestones, undivided (Mississippian) at surface, covers 26 % of this area

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

Rocks of Chesterian age, lower part (Upper Mississippian) at surface, covers 26 % of this area

Rocks of Chesterian age, lower part

Rocks of Chesterian age, upper part (Upper Mississippian) at surface, covers 19 % of this area

Rocks of Chesterian age, upper part

Alluvium (Pleistocene to Holocene) at surface, covers 12 % of this area

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

Caseyville Formation (Lower to Middle Pennsylvanian) at surface, covers 11 % of this area

Caseyville Formation

Tradewater Formation (Middle Pennsylvanian) at surface, covers 5 % of this area

Tradewater Formation

Lamprophyre dikes and sills (Permian) at surface, covers 0.5 % of this area

Lamprophyre dikes and sills; in Caldwell, Crittenden, and Livingston Counties

Lower Pope Group (Aux Vases Sandstone through Glen Dean Limestone) (Mississippian (Visean)) at surface, covers 0.2 % of this area

Lower Pope Group (Aux Vases Sandstone through Glen Dean Limestone).

St. Louis Limestone (Mississippian (Visean)) at surface, covers 0.2 % of this area

St. Louis Limestone.

Upper Pope Group (Tar Springs Sandstone through Kinkaid Limestone) (Mississippian (Serpukhovian)) at surface, covers < 0.1 % of this area

Upper Pope Group (Tar Springs Sandstone through Kinkaid Limestone).

Ullin and Salem Limestones (Mississippian (Visean)) at surface, covers < 0.1 % of this area

Ullin and Salem Limestones in southern Illinois.

Tuscaloosa Formation (Upper Cretaceous) at surface, covers < 0.1 % of this area

Tuscaloosa Formation

Ste. Genevieve Limestone (Mississippian (Visean)) at surface, covers < 0.1 % of this area

Ste. Genevieve Limestone.