Scale 1:250,000. See also Miscellaneous Map M-92, 1999, which is a limited revision of this map, in that it is available in digital formats, has a different scale (1:200,000), the eastern boundary is extended several miles to long. 95o30'W., and teh geology of the region has been slightly revised. Map M-80, 1994, has a more detailed description of map units, as well as a discussion of the regional geology.
Jirsa, M.A.; Runkel, A.C.; Chandler, V.W..
M-080 Bedrock geologic map of northwestern Minnesota.
Minnesota Geological Survey.
Retrieved from the University of Minnesota Digital Conservancy,
Content distributed via the University of Minnesota's Digital
Conservancy may be subject to additional license and use
restrictions applied by the depositor.