Geologic units in LaGrange county, Indiana

Ellsworth Shale (Devonian-Mississippian) at surface, covers 13 % of this area: Ellsworth Shale - Green shale; some black shale in lower part
Lithology: shale; black shale
Ellsworth Shale (Late Devonian) at surface, covers < 0.1 % of this area: Ellsworth Shale
Lithology: shale; siltstone; sandstone
Coldwater Shale (Mississippian) at surface, covers 0.3 % of this area: Coldwater Shale
Lithology: shale; limestone; dolostone (dolomite); sandstone; siltstone
Coldwater Shale (Mississippian) at surface, covers 87 % of this area: Coldwater Shale - Mostly gray shale
Lithology: shale