USGS and AASG Launch National Geologic Map Database (NGMD) Data Portal

ngmdThe United States Geological Survey (USGS) and the Association of American State Geologists (AASG) have launched the National Geologic Map Database (NGMD) Data Portal located at

The NGMD) Data Portal is intended to give users a quick browse and query of U.S. geologic maps in a standardized format.  It also links to the source information found via the NGMDB Map Catalog and Geologic Names Lexicon. More than 80,000 maps and reports, by 370 publishers, are accessible now, and more are coming later this year.