National Geologic Map Database, Geological Division, U.S. Geological Survey, U.S. Department of the Interior
Data Center Description
This Web site contains information on activities of the National Geologic Map Database Project (NGMDB). The NGMDB is a collaborative effort primarily involving the USGS and the Association of American State Geologists. This Web site contains informal, generally time-sensitive material intended for project members, cooperators, and interested parties.