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

This digital map database, compiled from previously published
and unpublished data, and new mapping by the authors,
represents the general distribution of bedrock and surficial
deposits in the mapped area. Together with the accompanying
text file (nesfmf.ps, nesfmf.pdf, nesfmf.txt), it provides
current information on the geologic structure and stratigraphy
of the area covered. The database delineates map units that
are identified by general age and lithology following the
stratigraphic nomenclature of the U.S. Geological Survey. The
scale of the source maps limits the spatial resolution (scale)
of the database to 1:62,500 or smaller.