Geologic units in Delta county, Michigan

Additional scientific data in this geographic area

Trenton Limestone (Late Ordovician) at surface, covers 49 % of this area

Trenton Limestone

Stonington Formation (Late Ordovician) at surface, covers 10 % of this area

Stonington Formation

Big Hill Dolomite (Late Ordovician) at surface, covers 8 % of this area

Big Hill Dolomite

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

Utica Shale

Queenston Shale (Late Ordovician) at surface, covers 6 % of this area

Queenston Shale

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

Manistique Formation

Black River Limestone (Late Ordovician) at surface, covers 5 % of this area

Black River Limestone

Burnt Bluff Formation (Early Silurian) at surface, covers 4 % of this area

Burnt Bluff Formation

Cataract Formation (Early Silurian) at surface, covers 4 % of this area

Cataract Formation

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

Collingwood Limestone

Engadine Dolomite (Early Silurian) at surface, covers 0.2 % of this area

Engadine Dolomite