EarthWorks Geospatial Catalog

Geological highway map of the Great Lakes region [cartographic material] : Wisconsin, Illinois, Indiana, Michigan, Ohio / compiled by A.P. Benison ; cartography by Van K. Higginbotham.

Title on front panel: Geological highway map, Great Lakes region. "Published ... with the cooperation of the United States Geological Survey." Includes text, 2 generalized charts of surface time and rock units, ladder of time and life, distance chart, index map, and 4 insets. On verso: Text, 3 cross sections, landform map, tectonic map, and 2 insets showing "Places of geological interest" and location of minerals and fossils.
American Association of Petroleum Geologists
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