Geologic units in Shelby county, Indiana

Wabash Formation (Silurian) at surface, covers 2 % of this area: Wabash Formation - Limestone, dolomite, and argillaceous dolomite
Lithology: limestone; dolostone (dolomite)
Louisville Limestone through Brassfield Limestone (Silurian) at surface, covers 5 % of this area: Louisville Limestone through Brassfield Limestone - Sexton Creek Limestone at base in Kentland area and on cross-section
Lithology: limestone
Muscatatuck Group (Devonian) at surface, covers 88 % of this area: Muscatatuck Group - Limestone and dolomite
Lithology: limestone; dolostone (dolomite)
Pleasant Mills Formation (Silurian) at surface, covers 5 % of this area: Pleasant Mills Formation - Dolomite, limestone, and argillaceous dolomite
Lithology: dolostone (dolomite); limestone
New Albany Shale (Devonian-Mississippian) at surface, covers 0.4 % of this area: New Albany Shale - Black and greenish-gray shale
Lithology: black shale; shale