Big Ten Academic Alliance Geospatial Discovery Portal

Big Ten Academic Alliance Geoportal

Ancient shorelines of southwestern Lake Michigan

Author:
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.
Collection:
Indiana Historic Maps
Places:
Porter County, Indiana, United States, Lake County, Indiana, United States, Lake Michigan, United States, and Indiana, United States
Subjects:
Thematic maps and Beaches
Year:
2000
Contributed by:
Indiana
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