Browsing by Subject "lithostratigraphy"

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    Information Circular 6. Paleozoic Lithostratigraphic Nomenclature for Southeastern Minnesota
    (Minnesota Geological Survey, 1969) Austin, G.S.
    The Paleozoic lithostratigraphic nomenclature shown in the column was compiled from information obtained from several sources-outcrops, deep cores, and theses on the geology of southeastern Minnesota. It is a revision of the Paleozoic stratigraphic column published in 1956 (Schwartz, 1956). The purpose of this discussion is to describe the Paleozoic strata of southeastern Minnesota in terms of the revised nomenclature and to call attention to related post-1956 publications and other source materials.
  • Thumbnail Image
    Item
    OFR-17-01, Minnesota Geological Survey 1:100,000 surficial geologic texture database
    (Minnesota Geological Survey, 2017) Lusardi, B.A.
    Map showing predicted sediment texture for surficial geology polygons in the Minnesota Geological Survey 1:100,000 geological mapping database. Updated relative to the original published maps using information to support texture identification as categorized by US Department of Agriculture terminology. Information derived from 38 previously published maps, including county geologic atlas and regional hydrogeologic assessment surficial geology plates, as well as maps published by MGS as miscellaneous maps and open file maps. Where county or quadrangle-scale mapping is unavailable, the database is based on 1:500,000 mapping (Hobbs and Goebel, 1982).