National geologic map database
By: USGS
Contributors: Association of American State Geologists
Publisher: U.S. Dept. of the Interior
Published: 1997
Place of publication: Reston, VA
Language: eng
Format: [electronic resource] /
Subjects: Geology; Indexes; Maps; Bibliography; Geological Survey (U.S.)
Other titles: USGS national geologic map database; NGMDB
Description: Searchable catalog providing access to maps and other spatially referenced data for geology, geophysics, marine geology, earth resources, hazards, geochemistry, geochronology, and paleontology. Includes links to other sources of topographic and related maps, other earth science databases, and additional Web resources related to geology.

"Your Geoscience resource for maps and related data about: geology, hazards, earth resources, geophysics, geochemistry, geochronology, paleontology, and marine geology. ".
Notes: Title from home page.

Managed by the USGS National Cooperative Geologic Mapping Program in cooperation with the Association of American State Geologists.

World Wide Web Resource.
Table of contents: title: Geologic maps; title: Geologic names; title: New mapping.