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Cordell Formation
Stratigraphic range: Silurian
Type	Formation
Unit of	Manistique Group
Underlies	Rockview Formation
Overlies	Schoolcraft Formation
Location
Region	Michigan
Country	United States

The Cordell Formation is a geologic formation in Michigan. It preserves fossils dating back to the Silurian period.

References

1. "Michigan Basin Stratigraphy on ResearchGate".
2. "Middle Silurian paleoecology; The Raber Fossil Beds, Chippewa County, Michigan, on Geological Society of America Centennial Field Guide—North-Central Section, 1987" (PDF).

v t e Chronostratigraphy of Michigan
Ph	Cz Q Pleistocene indet. Glacial till Mz J indet. Ionia Formation Pz C ⁋ Grand River Formation Saginaw Formation indet. Parma Sandstone M Bayport Limestone Coldwater Shale Marshall Sandstone Sunbury Shale D Upper indet. Antrim Shale Bedford Shale Berea Sandstone Ellsworth Shale Frasnian Squaw Bay Limestone Middle Givetian Squaw Bay Limestone Alpena Limestone Amherstburg Formation Anderdon Limestone Bell Shale Bois Blanc Formation Dundee Limestone Ferron Point Formation Long Lake Limestone Lucas Formation Rockport Quarry Limestone Rogers City Limestone Sylvania Sandstone Thunder Bay Limestone Lower Garden Island Formation S indet. Bertie Formation Byron Formation Bush Bay Formation Cordell Formation Hendricks Formation Lime Island Formation Pointe aux Chenes Formation Put-in-Bay Dolomite Raisin River Dolomite Rapson Creek Formation Rockview Formation Salina Group Schoolcraft Formation St. Ignace Dolomite Llandovery Cabot Head Shale Manitoulin Dolomite O Upper Sandbian Bill's Creek Shale Big Hill Formation Stonington Formation Middle Darriwilian Bill's Creek Shale Black River Formation Collingwood Shale Trenton Formation Lower Au Train Formation Є Munising Formation
pЄ	♇ Copper Harbor Conglomerate Freda Sandstone Jacobsville Sandstone Nonesuch Shale

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