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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 at the Survey

  • The new Geophysical Portal is up and running! The Geophysics Portal is a new page off of our MGS Open Data web site. Here you can view stories and link to data to download to your computer. Enjoy!
  • 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 Report is available here.
  • The Hubbard County Geologic Atlas - Part A (geology) was recently published by the Survey. Please see the Press Release for additional information.
  • 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.

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