| 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. |
NGMDB |
NOTE: this page will no longer be used for the intended purpose.
Until further notice, NGMDB vocabularies are posted at the NCGMP09 database design site.