Statewide Geology Data for Minnesota

Most of the geologic GIS information described on this webpage is statewide in scope and is generally 1:500,000 to 1:1,000,000 in scale.

Bedrock and Quaternary Geology and Hydrogeology

Minnesota Geological Survey

State Map Series: These maps are part of the MGS "State Map Series".  Scales are 1:500,000 to 1:1 million.

Online Map Services: MGS is in the process of migrating maps and digital information to online versions in an effort to increase accessibility and provide for more general use. They are doing this through web-enabled map services. Services offer access to some State Map Series maps and mosaics of more recent, high-resolution data sets.

U.S. Geological Survey

  • Minnesota Geologic Map Data
    Geologic units and structural features in Minnesota provided as a GIS database, interactive map, and web mapping service.

Additional Maps:  Current and Historic

Created by the Minnesota Geological Survey.

  • Geology of Minnesota
    Maps and cross-sections showing different aspects of Minnesota geological features.
  • Minnesota Digital Library: Minnesota Reflections
    Scanned images of historical geologic maps (592 images, alphabetized by title). Includes MGS aggregate resources maps, the State Map Series, County Geologic Atlas and Regional Hydrogeologic Assessments (including graphics of all map plates for these series), bedrock geology and other geology maps for various smaller study areas (down to the quad), and a few historic maps.
  • Preliminary Geologic Map of Minnesota 1872 by N.H. Winchell (4 MB, PDF)

Mineral / Industrial Mining

Information provided by the Lands and Minerals Division of the Minnesota Department of Natural Resources.

  • Public Access to Minerals Data
    Index of 100 years of Minnesota non-ferrous mineral information (PDF format), including reports, maps, drilling logs, etc., searchable by map or attributes.
  • Mineral Exploration in Minnesota
    A table details the location, company, drilling footages and other information pertaining to metallic mineral exploration drilling; the map shows areas of drilling activity and leases.
  • Mineral Industries of Minnesota
    Generalized map of current metallic and industrial mining operations.


Aeromagnetic data records the total magnetic intensity anomaly relative to the earth's magnetic field, indicating the distribution and concentration of magnetic minerals (primarily iron-bearing) within the upper crust of the earth. Maps, documentation, and GIS data.

Geographic Data Clearinghouse