Browsing by Subject "Wisconsinan"

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  • Wayne, William J. (Indiana Geological Survey, 1965)
    The main advance of glacial ice into central Indiana during Wisconsin time had two distinct pulsations within a span of about 1,000 years. The first, about 21,000 years ago, reached farthest south and built the segmented ...
  • Harrison, Wyman (Indiana Geological Survey, 1959-09)
    Two to four till sheets were deposited in Marion County, Indiana by the East White sublobe of the Ontario-Erie major lobe of the Wisconsin ice sheet. Fraction analyses (mineralogy and lithology versus size) were made for ...
  • Pavey, Richard R (Ohio Department of Natural Resources, Division of Geological Survey, 2014)
    The Central Great Lakes Geologic Mapping Coalition (now the Great Lakes Geologic Mapping Coalition or GLGMC) was formed in the late 1990s between the USGS and a network of state geological surveys which border the Great ...

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