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  Welcome to the Minnesota Geological Survey

  • Confusion HillVirginia Minnesota
  • ConglomerateNear Rainy Lake
  • Sawtooth RangeGrand Marais
  • Knife RiverAgate
  • Poplar River
  • Pink Zeolite with calcite
  • White Iron LakeEly Minnesota
  • Lake Superior outcropGrand Portage Minnesota
  • Diabase dike
  • Thomsonite
  • White Thomsonite
  • Cobble beachLake Superior
  • Dunka pitBabbitt Minnesota
  • Agate
  • Minnesota iron formation
  • quarry face in Morton gneissMorton Minnesota
  • detail of Morton GneissMorton Minnesota
  • Sioux Quartzite conglomerateNew Ulm Minnesota
  • calyx cores in Morton GneissMorton Minnesota
  • inclusion in Morton GneissMorton Minneosta
  • Weatherd granite outcrops
  • Soudan iron formation
  • State aeromagnetic maparomagnetic survey aircraft
  • Vermilion Granitic ComplexRay Minnesota
  • Jordan Sandstone intraclastsWinona County
  • Jordan Sandstone and Oneota DolomiteWinona County
  • Quartz Sand
  • Minnehaha FallsMinneapolis
  • St. Peter sandstone, Glenwood shale and Platteville limestoneSt. Paul
  • Minnehaha FallsMinneapolis
  • Columnar jointing in intrusive rocksSilver Bay
  • Fractured Ordovician Carbonate RockFillmore County
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The Minnesota Geological Survey is a research and service arm of the Newton Horace Winchell School of Earth Sciences at the University of Minnesota. It investigates the geology of Minnesota and provides basic public information on the geology of the state. The Survey works with state, county, and regional offices to set up geologic data bases and provide technical guidance for water resource planning, land management and mineral exploration policy, energy system development, and other planning and resource management activities.

What's New

  • MGS will host once again the Geologic Mapping Forum in April, 2019; geologic map authors and program managers across the US and beyond are welcome to attend.
  • The MGS is testing out a new way to find geological geospatial data created by the geologists here at the survey. This includes new ways of finding data, MGS Story Maps and other links to geological spatial data. The MGS Open Data link is located under "Data and Publicatons" on the left side of this web page. Or feel free to click MGS Open Data to test it out.
  • The 2017-2018 Minnesota Geological Survey Annual Reort is available here.
  • The Cass County Geologic Atlas - Part A (geology) was recently published by the Survey. Please see the Press Release for additional information.
  • Check out the latest web app from the Minnesota Geological Survey's Bedrock Geology app. This app allows you to navigate, search and query the bedrock geology that you stand on. It is also mobile friendly so check it out with your phone. Just scan this QR code with your phone.

  • MGS hosted the Geologic Mapping Forum on March 27-29, 2018; geologic map authors and program managers across the US and beyond, thanks for attending!
  • The 2016 - 2017 Minnesota Geological Survey Annual Report is available here Annual Report.
  • The MGS hosted this years Digital Mapping Techniques (DMT) conference. To find out more, please go to DMT.
  • The latest County Geologic Atlas (C-42) for Becker County is now available on the University's Digital Conservancy here. Web Story for the project can be found at Becker County Story Map. Print copies are also available through our Map Sales Department.
  • Our newest report, RI-68 Quaternary Lithostratigraphic Units of Minnesota, is now available on the University's Digital Conservancy here.
  • Want to see the actual notebooks of MGS Geologists online? Check them out at our UMedia Archive. You can also find the link to the Media Library on our web page under Minnesota Geology Topics
  • We have moved to a new location! Our new office location is now at 2609 Territorial Rd., St. Paul, MN 55114. Please email us at Email MGS for directions or to discuss your paper map or MGS publication needs.
  • The Search or Browse link under Data and Publications now takes you directly to the University's Digital Conservancy. This search and browse has an updated look and still contains all of the Survey's publications. Enjoy!
  • Earthquakes in Minnesota? You betcha! We are getting our fair shake. Check out the update in our Minnesota at a Glance publication.

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Map Sales: 612-626-2969 - please call or email us to discuss your map or publication needs.
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