Geologic units in Tipton county, Indiana

Wabash Formation (Silurian) at surface, covers 84 % of this area

Limestone, dolomite, and argillaceous dolomite

Muscatatuck Group (Devonian) at surface, covers 13 % of this area

Limestone and dolomite

Pleasant Mills Formation (Silurian) at surface, covers 3 % of this area

Dolomite, limestone, and argillaceous dolomite