Geologic units in Jennings county, Indiana

New Albany Shale (Devonian-Mississippian) at surface, covers 46 % of this area

Black and greenish-gray shale

Muscatatuck Group (Devonian) at surface, covers 38 % of this area

Limestone and dolomite

Louisville Limestone through Brassfield Limestone (Silurian) at surface, covers 13 % of this area

Sexton Creek Limestone at base in Kentland area and on cross-section

Whitewater Formation (Ordovician) at surface, covers 2 % of this area

Skeletal limestone and calcareous shale; dolomitic mudstone (S, Saluda Member) at base