Description: Map showing the terminal moraine of the second glacial epoch in the Great Lakes region, including the drift bearing area, the generalized directions of glacial movement, the direction of glacial striae, and the locations of prominent terminal moraines. Map scale is one inch equals 60 miles, and referenced to Julius Bien and Co. lith.
Source: Thomas C. Chamberlin, United States Geological Survey Annual Report, 3rd (Washington, DC: United States Geological Survey, 1882) PL.XXXI
Map Credit: Courtesy the private collection of Roy Winkelman |
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