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.

Background Information --
Developing a data model
for geologic maps

Return to the NGMDB project   

This page is <URL:>
Maintained by Dave Soller
last update: Oct. 22, 2003