Geologic units in Decatur county, Indiana

Louisville Limestone through Brassfield Limestone (Silurian) at surface, covers 57 % of this area: Louisville Limestone through Brassfield Limestone - Sexton Creek Limestone at base in Kentland area and on cross-section
Lithology: limestone
Whitewater Formation (Ordovician) at surface, covers 7 % of this area: Whitewater Formation - Skeletal limestone and calcareous shale; dolomitic mudstone (S, Saluda Member) at base
Lithology: limestone; shale; mudstone
Muscatatuck Group (Devonian) at surface, covers 36 % of this area: Muscatatuck Group - Limestone and dolomite
Lithology: limestone; dolostone (dolomite)
Dillsboro Formation (Ordovician) at surface, covers < 0.1 % of this area: Dillsboro Formation - Skeletal limestone and calcareous shale
Lithology: limestone; shale