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Geologic units in Owen county, Indiana

Stephensport Group (Mississippian) at surface, covers 2 % of this area
Stephensport Group - Sandstone, micritic and skeletal limestone, and shale
Lithology: limestone; sandstone; shale
Blue River Group (Mississippian) at surface, covers 28 % of this area
Blue River Group - Mostly micritic, skeletal, and oolitic limestone
Lithology: limestone
Raccoon Creek Group (Pennsylvanian) at surface, covers 36 % of this area
Raccoon Creek Group - Mostly shale and sandstone; also includes thin beds of limestone, clay, and coal. B, Buffaloville Coal Member; LB, Lower Block Coal Member
Lithology: shale; sandstone; limestone; clay or mud; coal
West Baden Group (Mississippian) at surface, covers 20 % of this area
West Baden Group - Shale, sandstone, and micritic and skeletal limestone
Lithology: sandstone; shale; limestone
Sanders Group (Mississippian) at surface, covers 13 % of this area
Sanders Group - Mostly skeletal limestone, cherty in lower part
Lithology: limestone; chert
Borden Group (Mississippian) at surface, covers 2 % of this area
Borden Group - Mostly siltstone; lenses of crinodial limestone in upper part. Much cherty and silty limestone and dolomite in northwest. NP, top of New Providence Shale
Lithology: siltstone; limestone; dolostone (dolomite); chert

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