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2261. Precambrian geology and geochronology of Minnesota, Bulletin 41, Plate 4

Maps University Of Minnesota Public content
1961. Baadsgaard, Halfdan, Goldich, Samuel S., 1909-, Hoffman, J. H. (John H.), Krueger, Harold W., and Nier, Alfred O. (Alfred Otto), 1911-1994. Map of western part of the Lake Superior region, Minnesota, showing location of samples that were age-dated by radioactive isotope methods, scale 1... Minnesota Geological Survey.

2262. Precambrian geology and geochronology of Minnesota, Bulletin 41, Plate 5

Maps University Of Minnesota Public content
1961. Baadsgaard, Halfdan, Goldich, Samuel S., 1909-, Hoffman, J. H. (John H.), Krueger, Harold W., and Nier, Alfred O. (Alfred Otto), 1911-1994. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Granite Falls area, Minnesota, s... Minnesota Geological Survey.