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5 results returned

  1. Title: Precambrian geology and geochronology of Minnesota, Bulletin 41, Plate 1

    Contributors:

    Summary: Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of northeastern Minnesota, scale 1 inch = about 15 miles.

  2. Title: Precambrian geology and geochronology of Minnesota, Bulletin 41, Plate 5

    Contributors:

    Summary: Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Granite Falls area, Minnesota, showing locations of dated samples, scale 1 inch = about 1/4 mile.

  3. Title: Precambrian geology and geochronology of Minnesota, Bulletin 41, Plate 4

    Contributors:

    Summary: Map of western part of the Lake Superior region, Minnesota, showing location of samples that were age-dated by radioactive isotope methods, scale 1 inch = about 40 miles.

  4. Title: Precambrian geology and geochronology of Minnesota, Bulletin 41, Plate 2

    Contributors:

    Summary: Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of east-central Minnesota, scale 1 inch = about 10 miles.

  5. Title: Precambrian geology and geochronology of Minnesota, Bulletin 41, Plate 3

    Contributors:

    Summary: Map of the Minnesota-Ontario border region, showing location of dated samples, scale 1 inch = about 20 miles.

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