47 Geologic Map of North America

Elizabeth Johnson

Generalized Geologic Map of North America

This image is a generalized geologic map of all of North America. Each major rock formation or unit is a different color.  In a map of such a large area, individual rock layers cannot be shown, so the rock units are generally grouped by age and/or type.  Click on the image to enlarge.

Figure 1. Geologic Map of North America. From the USGS, Public Domain.



Map Locations for this Module

This excerpt of the map from above shows the approximate locations of the maps we will look at for this lab.

Figure 2. Locations of geologic maps for this lab.

Find Geologic Maps Where You Live

Are you interested in locating geologic maps from where you live (or other interesting places)?  All maps created by the US Geological Survey and State surveys are free to the public.  You can search by area here:




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Physical Geology Laboratory Copyright © by Elizabeth Johnson is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License, except where otherwise noted.

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