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Ancient shorelines of southwestern Lake Michigan

Creator:
Thompson, Todd A.(Todd Alan), 1959-cartographer.
Description:
Includes ill., text, graphs showing Lake-level fluctuations over the past 4,700 years and a timeline showing historical events since 1166 B.C. tied to specific beach ridges.; Poster 2.1.; The map below was created by tracing beach ridges from a series of aerial photographs of northern Lake and Porter Counties taken in 1938. Scale approximately 1:59,000.
Publisher:
Indiana University, Indiana Geological Survey
Collection:
Indiana Historic Maps
Places:
Porter County, Indiana, United States, Lake County, Indiana, United States, Lake Michigan, United States, and Indiana, United States
Subject:
Thematic maps
Type:
Image
Year:
2000
Contributed by:
Indiana
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