Geologic units in Bartholomew county, Indiana

Muscatatuck Group (Devonian) at surface, covers 42 % of this area

Limestone and dolomite

Borden Group (Mississippian) at surface, covers 31 % of this area

Mostly siltstone; lenses of crinodial limestone in upper part. Much cherty and silty limestone and dolomite in northwest. NP, top of New Providence Shale

New Albany Shale (Devonian-Mississippian) at surface, covers 27 % of this area

Black and greenish-gray shale

Louisville Limestone through Brassfield Limestone (Silurian) at surface, covers 0.9 % of this area

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