Geologic map of the Lake Superior region, with sections
Description
Marginal legend and cross sections. "Base map compiled by the U. S. Geological Survey from U. S. Geological Survey atlas sheets, Land Office records, compilations by State Geological Surveys, official maps of Canada and other data.", 58 x 89 centimeters
Creator
Geological Survey (U.S.)
Publisher
U.S. Geological Survey (Washington, D.C.?)
Temporal Coverage
1910
Date Issued
1910
Rights
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Geological Survey (U.S.) (1910). Geologic map of the Lake Superior region, with sections. U.S. Geological Survey (Washington, D.C.?). https://umedia.lib.umn.edu/item/p16022coll230:429 (map)