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GSA Digital Maps

The following open access digital maps have been published by the Geological Society of America under the Digital Maps and Charts series. They are listed here in chronological order. Our available printed maps can be found in the online GSA Store.


To reach the U.S. Geological Survey's collection of more than 200,000 historical USGS topographic maps, please click here. The USGS's National Geologic Map Database can be accessed at http://ngmdb.usgs.gov/.