Pleistocene History of Wisconsin

Steven Dutch University of Wisconsin - Green Bay
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Time 1000 yr Glacial Interglacial Event Events in Wisconsin
         
         
  Wisconsin      
    Sangamon    
  Illinoisan      
    Yarmouth    
  Kansan      
    Aftonian    
         
  Nebraskan (many Pleistocene geologists favor abandoning this term)     Very old tills near mouth of Wisconsin River; possible incision of present upper Mississippi along ice margin.
      Approximately 20 glacial advances known from deep-sea sediment sampling  
2000 Beginning of Pleistocene      

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Created 27 Dec 1997, Last Update 15 Sep 1997

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