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

Geologic units in Chippewa county, Michigan

Menominee Group; Emperor Volcanic Complex (Early Proterozoic) at surface, covers < 0.1 % of this area

Menominee Group; Emperor Volcanic Complex - Metamorphosed intermediate to mafic pyroclastic and flow rocks in easternmost part of Gogebic Range

Lithology: meta-basalt; metavolcanic rock

Jacobsville Sandstone (Middle Proterozoic) at surface, covers 15 % of this area

Jacobsville Sandstone - Red, brown, and white quartzose sandstone, and minor siltstone, shale and conglomerate

Lithology: sandstone; siltstone; conglomerate; shale

Trenton Limestone (Late Ordovician) at surface, covers 9 % of this area

Trenton Limestone

Lithology: limestone; dolostone (dolomite); shale

Queenston Shale (Late Ordovician) at surface, covers 4 % of this area

Queenston Shale

Lithology: shale

Cataract Formation (Early Silurian) at surface, covers 3 % of this area

Cataract Formation

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

Stonington Formation (Late Ordovician) at surface, covers 8 % of this area

Stonington Formation

Lithology: limestone; shale

Prairie du Chien Group (Early Ordovician) at surface, covers 6 % of this area

Prairie du Chien Group

Lithology: dolostone (dolomite); sandstone; shale

Big Hill Dolomite (Late Ordovician) at surface, covers 5 % of this area

Big Hill Dolomite

Lithology: dolostone (dolomite); limestone

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

Trempealeau Formation

Lithology: sandstone; shale; dolostone (dolomite)

Utica Shale (Late Ordovician) at surface, covers 7 % of this area

Utica Shale

Lithology: black shale

Black River Limestone (Late Ordovician) at surface, covers 11 % of this area

Black River Limestone

Lithology: limestone

Munising Formation (Late Cambrian) at surface, covers 9 % of this area

Munising Formation

Lithology: sandstone; shale; conglomerate

Burnt Bluff Formation (Early Silurian) at surface, covers 5 % of this area

Burnt Bluff Formation

Lithology: limestone

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

Collingwood Limestone

Lithology: limestone; black shale

Engadine Dolomite (Early Silurian) at surface, covers 8 % of this area

Engadine Dolomite

Lithology: dolostone (dolomite)

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

Manistique Formation

Lithology: dolostone (dolomite); limestone