National Geologic Map Database
General Information
- Title: Geology, tephrochronology, radiometric ages, and cross sections of the Mark West Springs 7.5' quadrangle, Sonoma and Napa Counties, California
- Author(s): McLaughlin, R.J., Sarna-Wojcicki, A.M., Fleck, R.J., Wright, W.H., Levin, V.R.G., and Valin, Z.C.
- Publishing Organization: U.S. Geological Survey
- Series and Number: Scientific Investigations Map SIM-2858
- Publication Date: 2004
- Map Scale: 1:24,000
- Cross Section: Yes
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Additional Resources
- Links and Downloads:
- Publication (includes original ArcGIS 8.x GIS data)
- Shapefile version (created by NGMDB, Feb., 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.