Geologic units in Henry county, Indiana

Muscatatuck Group (Devonian) at surface, covers 5 % of this area: Muscatatuck Group - Limestone and dolomite
Lithology: limestone; dolostone (dolomite)
Pleasant Mills Formation (Silurian) at surface, covers 21 % of this area: Pleasant Mills Formation - Dolomite, limestone, and argillaceous dolomite
Lithology: dolostone (dolomite); limestone
Dillsboro Formation (Ordovician) at surface, covers 11 % of this area: Dillsboro Formation - Skeletal limestone and calcareous shale
Lithology: limestone; shale
Ordovician rocks, undifferentiated (Silurian) at surface, covers 3 % of this area: Ordovician rocks, undifferentiated - Shale and limestone; upper part of Maquoketa Group in deep buried valleys; Maquoketa to upper part of Knox Supergroup in Kentland area
Lithology: shale ; limestone; dolostone (dolomite)
Wabash Formation (Silurian) at surface, covers 5 % of this area: Wabash Formation - Limestone, dolomite, and argillaceous dolomite
Lithology: limestone; dolostone (dolomite)
Whitewater Formation (Ordovician) at surface, covers 20 % of this area: Whitewater Formation - Skeletal limestone and calcareous shale; dolomitic mudstone (S, Saluda Member) at base
Lithology: limestone; shale; mudstone
Louisville Limestone through Brassfield Limestone (Silurian) at surface, covers 36 % of this area: Louisville Limestone through Brassfield Limestone - Sexton Creek Limestone at base in Kentland area and on cross-section
Lithology: limestone