Changing levels in the Lake Michigan basin from the Glenwood stage to the present time

Call Number: 
3310 d3-3
Author: 
J Harlen Bretz
Publisher: 
Illinois State Geological Survey
Date: 
1955
Map Description: 
2 charts on sheets 30 x 38 cm
Notes: 
No attempt is made in this diagram to express relative duration of the different stages.; Original for figure 51, Illinois State Geological Survey Bulletin 65 - part II
Keywords: 
Lake Michigan - levels; Pleistocene - Lake Michigan Basin
Scale: 
1 in. = 50 ft.
Added Entries: 
Illinois State Geological Survey Bulletin 65

 

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