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This digital map database, compiled from previously publishedand unpublished data, and new mapping by the authors,represents the general distribution of bedrock and surficialdeposits in the mapped area. Together with the accompanyingtext file (nesfmf.ps, nesfmf.pdf, nesfmf.txt), it providescurrent information on the geologic structure and stratigraphyof the area covered. The database delineates map units thatare identified by general age and lithology following thestratigraphic nomenclature of the U.S. Geological Survey. Thescale of the source maps limits the spatial resolution (scale)of the database to 1:62,500 or smaller.
Tags: 06013 = Contra Costa, 06041 = Marin, 06055 = Napa, 06067 = Sacramento, 06077 = San Joaquin, All tags...
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This Open-File report consists of a digital geologic map database and associated digital plot files and text files, revised from a hard copy by Sowers and others (1995). This digital map database provides current information on Quaternary geology and liquefaction susceptibility of the Napa, California, 1:100,000 quadrangle. The database delineates map units that are identified by general age and lithology following the stratigraphic nomenclature of the U.S. Geological Survey.


    map background search result map search result map Geologic map and map database of northeastern San Francisco Bay region, California; Most of Solano County and parts of Napa, Marin, Contra Costa, San Joaquin, Sacramento, Yolo, and Sonoma Counties A digital version of the 1970 US Geological Survey topographic map of the San Francisco Bay region, three sheets, 1:125,000 Quaternary geology and liquefaction susceptibility, Napa, California 1:100,000 quadrangle: A digital database Quaternary geology and liquefaction susceptibility, Napa, California 1:100,000 quadrangle: A digital database Geologic map and map database of northeastern San Francisco Bay region, California; Most of Solano County and parts of Napa, Marin, Contra Costa, San Joaquin, Sacramento, Yolo, and Sonoma Counties A digital version of the 1970 US Geological Survey topographic map of the San Francisco Bay region, three sheets, 1:125,000