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File:Geologic Map Lake Superior MN WI MI.jpg


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English: Bedrock geologic map of the US area bordering Lake Superior in Minnesota, Wisconsin, and Michigan.
Date 1982
Source Minnesota Geological Survey, University of Minnesota:
Author Morey, G. B., Sims, P. K. Cannon, W. F., Mudrey, M. G., Jr., D. L. Southwick
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Public domain The Minnesota Geological Survey has placed this image in the public domain with the request that credit be given to the Minnesota Geological Survey, University of Minnesota, and to the author(s) of the specific work. These images are available through the Minnesota Digital Library, "Minnesota Reflections". More information on the Minnesota Geological Survey map and report scanning project can be found here.
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