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The National Geologic Map Database contains information about geology-related printed maps and GIS data produced by Federal and state agencies.
Additional Information:
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.

Coverage: 1825 to Present - Updated regularly

Vendor: U.S. Geological Survey

Producer: U.S. Geological Survey

Interlibrary Loan Type: Not Permitted

Simultaneous User Limit: Unlimited simultaneous users