Scale 1:200,000 and 1:500,000. See the accompanying report RI-58 for additional information and the Duluth Complex mapping digital files.
Miller, James D., Jr.; Green, J.C.; Severson, M.J.; Chandler, V.W.; Peterson, D.M..
M-119 Geologic map of the Duluth Complex and related rocks, northeastern Minnesota.
Minnesota Geological Survey.
Retrieved from the University of Minnesota Digital Conservancy,
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