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Minnesota Reflections

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  • All fields: surveys--Minnesota
(1128 results)



Display: 50

    • Peat deposits of Minnesota, Bulletin 16, Plate 2

    • 1919
    • Peat Deposits of Beltrami County, Minnesota, showing location of soundings and depth of peat and topography of the surface of the bogs north of Red Lake, scale 1 inch = about 4 miles. Electronic file available at:...
    • Minnesota Geological Survey
    • Geology of Minnesota: a centennial volume, Plate 1

    • 1972
    • Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Minnesota, scale 1:1,000.000. Electronic file available at: ftp://mgssun6.mngs.umn.edu/map_catalog/pdf/umn23367.pdf
    • Minnesota Geological Survey
    • Aeromagnetic map of Minnesota, central region, Plate 1

    • 1985
    • Total magnetic intensity anomaly (relative to the earth's magnetic field), color coded, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map colors indicate the distribution and concentration of magnetic...
    • Minnesota Geological Survey
    • Peat deposits of Minnesota, Bulletin 16, Plate 3

    • 1919
    • Peat Deposits of Koochiching County Minnesota, showing locations of drainage ditches, scale 1 inch = about 4 miles. Electronic file available at: ftp://mgssun6.mngs.umn.edu/map_catalog/pdf/umn23276.pdf
    • Minnesota Geological Survey
    • Aeromagnetic map of Minnesota, west-central region, Plate 2

    • 1987
    • Total magnetic intensity anomaly, contour, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map contours (lines of equal magnetic intensity) indicate the distribution and concentration of magnetic minerals...
    • Minnesota Geological Survey
    • Aeromagnetic map of Minnesota, central region, Plate 2

    • 1985
    • Total magnetic intensity anomaly, contour, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map contours (lines of equal magnetic intensity) indicate the distribution and concentration of magnetic minerals...
    • Minnesota Geological Survey
    • Peat deposits of Minnesota, Bulletin 16, Plate 4

    • 1919
    • Map showing Peat Deposits of Itasca County Minnesota, scale 1 inch = about 4 miles. Electronic file available at: ftp://mgssun6.mngs.umn.edu/map_catalog/pdf/umn23277.pdf
    • Minnesota Geological Survey
    • Aeromagnetic map of Minnesota, southeastern region, Plate 1

    • 1991
    • Total magnetic intensity anomaly (relative to the earth's magnetic field), color coded, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map colors indicate the distribution and concentration of magnetic...
    • Minnesota Geological Survey
    • Aeromagnetic map of Minnesota, west-central region, Plate 1

    • 1987
    • Total magnetic intensity anomaly (relative to the earth's magnetic field), color coded, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map colors indicate the distribution and concentration of magnetic...
    • Minnesota Geological Survey
    • Aeromagnetic map of Minnesota, southeastern region, Plate 2

    • 1991
    • Total magnetic intensity anomaly, contour, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map contours (lines of equal magnetic intensity) indicate the distribution and concentration of magnetic minerals...
    • Minnesota Geological Survey
    • Aeromagnetic map of Minnesota, northwestern region, Plate 1

    • 1989
    • Total magnetic intensity anomaly (relative to the earth's magnetic field), color coded, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map colors indicate the distribution and concentration of magnetic...
    • Minnesota Geological Survey
    • Aeromagnetic map of Minnesota, northwestern region, Plate 2

    • 1989
    • Total magnetic intensity anomaly, contour, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map contours (lines of equal magnetic intensity) indicate the distribution and concentration of magnetic minerals...
    • Minnesota Geological Survey
    • Aeromagnetic map of Minnesota, southwestern region, Plate 1

    • 1989
    • Total magnetic intensity anomaly (relative to the earth's magnetic field), color coded, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map colors indicate the distribution and concentration of magnetic...
    • Minnesota Geological Survey
    • Aeromagnetic map of Minnesota, southwestern region, Plate 2

    • 1989
    • Total magnetic intensity anomaly, contour, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map contours (lines of equal magnetic intensity) indicate the distribution and concentration of magnetic minerals...
    • Minnesota Geological Survey
    • Aeromagnetic map of Minnesota, north-central region--Roseau quadrangle

    • 1998
    • Total magnetic intensity anomaly, contour, scale 1:100,000.Interpretation of magnetic data collected from airborne surveys, the map contours (lines of equal magnetic intensity) indicate the distribution and concentration of magnetic minerals...
    • Minnesota Geological Survey
    • Aeromagnetic map of Minnesota, north-central region--Grygla quadrangle

    • 1998
    • Total magnetic intensity anomaly, contour, scale 1:100,000.Interpretation of magnetic data collected from airborne surveys, the map contours (lines of equal magnetic intensity) indicate the distribution and concentration of magnetic minerals...
    • Minnesota Geological Survey
    • Aeromagnetic map of Minnesota, north-central region--Fosston quadrangle

    • 1998
    • Total magnetic intensity anomaly, contour, scale 1:100,000.Interpretation of magnetic data collected from airborne surveys, the map contours (lines of equal magnetic intensity) indicate the distribution and concentration of magnetic minerals...
    • Minnesota Geological Survey
    • Aeromagnetic map of Minnesota, north-central region--Baudette quadrangle

    • 1998
    • Total magnetic intensity anomaly, contour, scale 1:100,000.Interpretation of magnetic data collected from airborne surveys, the map contours (lines of equal magnetic intensity) indicate the distribution and concentration of magnetic minerals...
    • Minnesota Geological Survey
    • Aeromagnetic map of Minnesota, north-central region--Blackduck quadrangle

    • 1998
    • Total magnetic intensity anomaly, contour, scale 1:100,000.Interpretation of magnetic data collected from airborne surveys, the map contours (lines of equal magnetic intensity) indicate the distribution and concentration of magnetic minerals...
    • Minnesota Geological Survey
    • Aeromagnetic map of Minnesota, north-central region--Bigfork quadrangle

    • 1998
    • Total magnetic intensity anomaly, contour, scale 1:100,000.Interpretation of magnetic data collected from airborne surveys, the map contours (lines of equal magnetic intensity) indicate the distribution and concentration of magnetic minerals...
    • Minnesota Geological Survey
    • Geology of Minnesota: a centennial volume, Plate 2

    • 1972
    • Bouguer gravity anomaly map (anomaly related to different densities of rocks in the upper crust, Bouguer anomaly is a corrected difference between an observed gravity measurement and value predicted from a generalized earth model), showing...
    • Minnesota Geological Survey
    • Aeromagnetic map of Minnesota, east-central region, Plate 1

    • 1983
    • Total magnetic intensity anomaly (relative to the earth's magnetic field), color coded, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map colors indicate the distribution and concentration of magnetic...
    • Minnesota Geological Survey
    • Aeromagnetic map of Minnesota, east-central region, Plate 2

    • 1983
    • Total magnetic intensity anomaly, contour, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map contours (lines of equal magnetic intensity) indicate the distribution and concentration of magnetic minerals...
    • Minnesota Geological Survey
    • Aeromagnetic map of Minnesota, St Louis county, Plate 1

    • 1983
    • Total magnetic intensity anomaly (relative to the earth's magnetic field), color coded, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map colors indicate the distribution and concentration of magnetic...
    • Minnesota Geological Survey
    • Aeromagnetic map of Minnesota, St Louis county, Plate 2

    • 1983
    • Total magnetic intensity anomaly, contour, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map contours (lines of equal magnetic intensity) indicate the distribution and concentration of magnetic minerals...
    • Minnesota Geological Survey
    • Aeromagnetic map of Minnesota, Cook and Lake counties, Plate 1

    • 1983
    • Total magnetic intensity anomaly (relative to the earth's magnetic field), color coded, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map colors indicate the distribution and concentration of magnetic...
    • Minnesota Geological Survey
    • Aeromagnetic map of Minnesota, Cook and Lake counties, Plate 2

    • 1983
    • Total magnetic intensity anomaly, contour, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map contours (lines of equal magnetic intensity) indicate the distribution and concentration of magnetic minerals...
    • Minnesota Geological Survey
    • Aeromagnetic map of Minnesota, Carlton and Pine counties, Plate 2

    • 1983
    • Total magnetic intensity anomaly, contour, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map contours (lines of equal magnetic intensity) indicate the distribution and concentration of magnetic minerals...
    • Minnesota Geological Survey
    • Aeromagnetic map of Minnesota, Carlton and Pine counties, Plate 1

    • 1983
    • Total magnetic intensity anomaly (relative to the earth's magnetic field), color coded, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map colors indicate the distribution and concentration of magnetic...
    • Minnesota Geological Survey
    • Preliminary geological map of Minnesota

    • 1872
    • Geologic map of Minnesota, scale 1 inch = 20 miles. Electronic file available at: ftp://mgssun6.mngs.umn.edu/map_catalog/pdf/umn22593.pdf
    • Minnesota Geological Survey
    • Groundwater map of Minnesota

    • 1954
    • Ground water map of Minnesota, scale 1:2,000,000. Electronic file available at: ftp://mgssun6.mngs.umn.edu/map_catalog/pdf/umn22597.pdf
    • Minnesota Geological Survey
    • Cretaceous System in Minnesota, RI-5, Plate 1

    • 1964
    • Map of Minnesota showing localities of Cretaceous rocks described in the RI-5 report, scale 1 inch = about 35 miles. Electronic file available at: ftp://mgssun6.mngs.umn.edu/map_catalog/pdf/umn23378.pdf
    • Minnesota Geological Survey
    • Cretaceous System in Minnesota, RI-5, Plate 2

    • 1964
    • Contour map (lines of equal elevation) of the present altitude of the Pre-Cretaceous unconformity (erosional surface cut into older rocks) in Minnesota, scale 1 inch = about 32 miles. Electronic file available at:...
    • Minnesota Geological Survey

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