Explore Search: Geologic Maps
The National Geologic Map Database (NGMDB)
The U.S. National Geologic Map Database (NGMDB) serves as the authoritative, comprehensive resource for information about paper and digital geoscience maps and reports on the Nation's geology and stratigraphy.
The National Geologic Map Database (NGMDB)
The U.S. National Geologic Map Database (NGMDB) serves as the authoritative, comprehensive resource for information about paper and digital geoscience maps and reports on the Nation's geology and stratigraphy.
![Collage of USGS Maps.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/search_result/public/media/images/newsletter-search-default-thumbnails-real-time-maps_0.png?h=6bc574fb&itok=HLLitYZf)
Geologic map and coal resources of the Riner Quadrangle, Carbon and Sweetwater counties, Wyoming
![image of publications layered on a wooden table](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/search_result/public/media/images/newsletter-search-default-thumbnails-pubs_0.png?h=6bc574fb&itok=Ua9gRH5Z)