Map of southern Lake Michigan showing lines of side-scan sonar tracks, orientation and location of linear ridge features on the floor of Lake Michigan.

Call Number: 
3310 c5.1-2
Illinois State Geological Survey
Map Description: 
1 map : vellum ; on sheet 56 x 34 cm
Original for slide used in a talk at the 17th Conference on Great Lakes Research, 1974; Variation of original for Figure 4, Environmental Geology Notes 74.
Sonar investigations; Bathymetry; Lake bottom; Lake Michigan
1 in.=10 mi.
Added Entries: 
Environmental geology notes 74


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