Geologic units in Ripley county, Indiana

Louisville Limestone through Brassfield Limestone (Silurian) at surface, covers 45 % of this area

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

Whitewater Formation (Ordovician) at surface, covers 42 % of this area

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

Dillsboro Formation (Ordovician) at surface, covers 13 % of this area

Skeletal limestone and calcareous shale

Muscatatuck Group (Devonian) at surface, covers 0.3 % of this area

Limestone and dolomite