National Geologic Map Database
General Information
- Title: Geologic map database of the Washington DC area featuring data from three 30 X 60 minute quadrangles: Frederick, Washington West, Fredericksburg
- Author(s): Davis, A.M., Southworth, C.S., Reddy, J.E., and Schindler, J.S.
- Publishing Organization: U.S. Geological Survey
- Series and Number: Open-File Report OF-2001-227
- Publication Date: 2001
- Map Scale: 1:100,000
- Cross Section: None
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* See base map disclaimer below
Additional Resources
- Links and Downloads:
- Publication (includes original ArcGIS 8.x GIS data)
- Shapefile version (created by NGMDB, Jan., 2024 )
- For more information, please contact:
- U.S. Geological Survey
- USGS Information Services
- Box 25286
- Denver, CO 80225
- Phone: (303) 202-4700 or 1-888-ASK-USGS
- Fax: (303) 202-4710
* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.