It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.
Maps and Geospatial Information
This is the guide to the Library's Map Collection, and information regarding Geospatial Information.
These websites contain information regarding geologic maps of the United States.
National Geologic Map Database by the U.S. Geological Survey (USGS) – an interactive database with scans of most geological maps of the U.S. Click on "MapView".
This website is SO good and so fun. Be sure to use the "opacity" button to see the topographic maps, and aerial photographs underneath the geology maps.