EarthWorks Geospatial Catalog

Ancient shorelines of southwestern Lake Michigan

Author(s)
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
Place(s)
Porter County, Indiana, United States, Lake County, Indiana, United States, Lake Michigan, United States, and Indiana, United States
Subject(s)
Thematic maps and Beaches
Year
2000
Held by
Indiana
More details at