Pleistocene Glaciation in the Midwest
Link to Pleistocene information and maps showing the retreat of glaciers in the Midwestern U.S. Provided by the Illinois State Museum.
http://exhibits.museum.state.il.us/e...cier_maps.html
Link to Pleistocene information and maps showing the retreat of glaciers in the Midwestern U.S. Provided by the Illinois State Museum.
http://exhibits.museum.state.il.us/e...cier_maps.html