USGS

Open-File Report 97-97

Quaternary geology of Alameda County, and parts of Contra Costa, Santa Clara, San Mateo, San Francisco, Stanislaus, and San Joaquin Counties, California: A digital database

By: E.J. Helley and R.W. Graymer

View README file: al_q1.ReadMe (24 KB)

View the geologic explanation as a text file: alqgeo.txt (24 KB)

Download the geologic explanation as a PostScript plot file: alqgeo.ps (40 KB)

Download the geologic explanation as a PDF file: alqgeo.pdf (25 KB)

Download the database package in ARC/INFO 7.x uncompressed export format along with supporting materials in a compressed UNIX tar file: al_q1.tar.Z (18.6 MB, 87 MB when uncompressed)

Download three Postscript plottable files containing images of the geologic maps and base maps at a scale of 1:100,000, explanation sheet, and explanatory text in a compressed UNIX tar file: alqps.tar.Z (11.3 MB compressed download file, 40MB when uncompressed)

Download the geologic explanation sheet as a PDF file: alqexpl.pdf (112 KB)

View the geologic map sheet as a JPEG file (base-map removed): alqmap.jpg (472 KB)

Download the geologic map sheet as a PDF file: alqmap.pdf (10.8 MB)



For more information on the geology
of the San Francisco Bay region:
Visit the sfgeo website


Return to WRGIS Home PageReturn to Western Region Geologic Information Home Page
The URL for this page is: http://geopubs.wr.usgs.gov/open-file/of97-97/index.html
Please send comments and suggestions, or report problems, to Michael Diggles
Updated: October 21, 2005 (mfd)