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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 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