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  5. Michigan geologic units

Geologic units in Livingston county, Michigan

Coldwater Shale (Mississippian) at surface, covers 66 % of this area

Coldwater Shale

Marshall Sandstone (Mississippian) at surface, covers 12 % of this area

Marshall Sandstone

Saginaw Formation (Pennsylvanian) at surface, covers 9 % of this area

Saginaw Formation

Michigan Formation (Mississippian) at surface, covers 8 % of this area

Michigan Formation

Bayport Limestone (Mississippian) at surface, covers 3 % of this area

Bayport Limestone

Bedford Shale (Late Devonian) at surface, covers 1.0 % of this area

Bedford Shale

Berea Sandstone (Late Devonian) at surface, covers 0.8 % of this area

Berea Sandstone

Sunbury Shale (Mississippian-Devonian) at surface, covers < 0.1 % of this area

Sunbury Shale