USGS - science for a changing world

Geology and National Parks


Geology, Minerals, Energy and Geophysics Science Center home

The information found here reflects completed USGS work. The content of this page is static and has not been updated since the mid 2000's.

More geologic maps

Geologic map of the United States
Geologic Map of the United States.
| What is a geologic map? | Colors | Letter symbols | Lines | Faults | Strike and dip | Map key |

Accessibility FOIA Privacy Policies and Notices logo U.S. Department of the Interior | U.S. Geological Survey
Page Contact Information: G & G Webmasters
Page Last Modified: 25-Apr-2017@09:48