This simplified geologic map shows the general distribution of surficial sediments in Minnesota. During the Pleistocene Epoch (2 million- 10,000 years ago), glaciers advanced into Minnesota several times from different directions—the most recent include: the Superior lobe from the northeast; the Rainy lobe from the north-northeast; the Wadena lobe from the north; and the Des Moines lobe from the northwest. This map is modified from Hobbs, H.C., and Goebel, J.E., 1982, Geologic map of Minnesota, Quaternary geology: MGS State Map Series S-1, 1:500,000. Digital compilation by B.A. Lusardi.