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Maps Produced By The U.S. Government: Geologic Maps

The United States government is a significant producer of maps. This guide covers the major types of maps produced and how best to access them in print or online.

What are geologic maps?

Geologic or geological maps show geologic features such as rock types and faults. These maps usually overlay a topographic base map, but other base maps can be used. The geology of the map area is depicted using colors, lines, and symbols. Geologic mapping can be used to assess natural resources and geologic hazards, which can be of importance to a variety of researchers.

Print Maps @ UIC

A selection of geologic maps are available in the Maps Unit and Government Documents section of the library. Check the library catalog for location and availability.

Print maps held by the Maps Unit are accessible by request during Special Collections hours. The online tools listed on this page may be used to determine the map(s) needed prior to scheduling a visit.

Geologic Maps Online