Geologic units in Henderson county, Kentucky

Carbondale Formation (Middle Pennsylvanian) at surface, covers 4 % of this area: Carbondale Formation
Lithology: siltstone; sandstone; shale; coal
Carbondale Group (Pennsylvanian) at surface, covers 0.2 % of this area: Carbondale Group - Mostly shale and sandstone; also includes thin beds of limestone, clay, and coal. S, Springfield Coal Member
Lithology: shale; sandstone; limestone; clay or mud; coal
Alluvium (Pleistocene to Holocene) at surface, covers 52 % of this area: Alluvium; includes glacial deposits along the Ohio River and its tributaries west of Cannelton locks
Lithology: sand; silt; glacial drift
Sturgis Formation (Middle to Upper Pennsylvanian) at surface, covers 40 % of this area: Sturgis Formation
Lithology: siltstone; sandstone; shale; limestone; coal
Bond Formation (Pennsylvanian) at surface, covers < 0.1 % of this area: Bond Formation - Mostly shale and sandstone; also includes thin beds of limestone and coal
Lithology: shale; sandstone; limestone; coal
Patoka and Shelburn Formations (Pennsylvanian) at surface, covers < 0.1 % of this area: Patoka and Shelburn Formations - Mostly shale and sandstone; also includes thin beds of limestone and coal. WF, top of West Franklin member
Lithology: shale; sandstone; limestone; coal