National Geologic Map Database
Product Description Page
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Title: Geology, tephrochronology, radiometric ages, and cross sections of the Mark West Springs 7.5' quadrangle, Sonoma and Napa Counties, California
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Author(s): McLaughlin, R.J., Sarna-Wojcicki, A.M., Fleck, R.J., Wright, W.H., Levin, V.R.G., and Valin, Z.C.
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Publishing Organization: U.S. Geological Survey
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Series and Number: Scientific Investigations Map SIM-2858
- Publication Date: 2004
- Map Scale: 1:24,000
- Cross Section: Yes
- North Latitude: 38° 37' 30" N (38.6250)
- South Latitude: 38° 30' 0" N (38.5000)
- East Longitude: 122° 37' 30" W (-122.6250)
- West Longitude: 122° 45' 0" W (-122.7500)
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