Digital geologic map and mineral deposits of the Lake Superior region- Minnesota, Wisconsin, Michigan

Online link https://doi.org/10.3133/ofr97455
Description Bedrock geologic units, faults, and MRDS mineral deposit records for the area
Originators Cannon, William F., Kress, Thomas H., Sutphin, David M., Morey, G.B., Meints, Joyce, Barber-Delach, Robert D.
Publication U.S. Geological Survey Open-File Report 97-455

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