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 (primarily iron-bearing) within the upper crust of the earth. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn21113.pdf
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 minerals (primarily iron-bearing) within the upper crust of the earth. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn21104.pdf
Jirsa, Mark A.; Chandler, Val W.; Runkel, Anthony C.
Date Created:
1999
Description:
Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of northwestern Minnesota, scale 1:200,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22489.pdf
Jirsa, Mark A.; Runkel, Anthony C.; Chandler, Val W.
Date Created:
1994
Description:
Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of northwestern Minnesota, scale 1:250,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22477.pdf