Geology of the anorthosites of the Minnesota coast of Lake Superior, Bulletin 28, Plate 1
Description
Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Townships 54 and 55 North, Ranges 7 and 8 West, scale 1 inch = about 1/2 mile.
Creator
Grout, Frank F. (Frank Fitch), 1880-1958, Schwartz, George M. (George Melvin), 1892-1980
Grout, Frank F. (Frank Fitch), 1880-1958, Schwartz, George M. (George Melvin), 1892-1980 (1939). Geology of the anorthosites of the Minnesota coast of Lake Superior, Bulletin 28, Plate 1. Minnesota Geological Survey. https://reflections.mndigital.org/catalog/mgs:1021 (map)