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Mineral Resources > Online Spatial Data > Geology > by state > Michigan Geology

Geologic units in Schoolcraft county, Michigan

Black River Limestone (Late Ordovician) at surface, covers 15 % of this area

Black River Limestone

Lithology: limestone

Trempealeau Formation (Late Cambrian) at surface, covers < 0.1 % of this area

Trempealeau Formation

Lithology: sandstone; shale; dolostone (dolomite)

Big Hill Dolomite (Late Ordovician) at surface, covers 4 % of this area

Big Hill Dolomite

Lithology: dolostone (dolomite); limestone

Utica Shale (Late Ordovician) at surface, covers 11 % of this area

Utica Shale

Lithology: black shale

Manistique Formation (Early Silurian) at surface, covers 11 % of this area

Manistique Formation

Lithology: dolostone (dolomite); limestone

Engadine Dolomite (Early Silurian) at surface, covers 2 % of this area

Engadine Dolomite

Lithology: dolostone (dolomite)

Collingwood Limestone (Late Ordovician) at surface, covers 2 % of this area

Collingwood Limestone

Lithology: limestone; black shale

Burnt Bluff Formation (Early Silurian) at surface, covers 13 % of this area

Burnt Bluff Formation

Lithology: limestone

Cataract Formation (Early Silurian) at surface, covers 6 % of this area

Cataract Formation

Lithology: shale; limestone; dolostone (dolomite); sandstone

Queenston Shale (Late Ordovician) at surface, covers 5 % of this area

Queenston Shale

Lithology: shale

Trenton Limestone (Late Ordovician) at surface, covers 15 % of this area

Trenton Limestone

Lithology: limestone; dolostone (dolomite); shale

Prairie du Chien Group (Early Ordovician) at surface, covers 7 % of this area

Prairie du Chien Group

Lithology: dolostone (dolomite); sandstone; shale

Stonington Formation (Late Ordovician) at surface, covers 9 % of this area

Stonington Formation

Lithology: limestone; shale