[Parameters: Topic='SOLID EARTH', Term='NATURAL RESOURCES']
Digital geologic map and map database of parts of Marin, San Francisco, Alameda, Contra Costa, and Sonoma Counties, CaliforniaEntry ID: USGS_Map_MF-2337
Abstract: This database and accompanying plot files depict the distribution of geologic
materials and structures at a regional (1:62,500) scale. The report is
intended to provide geologic information for the regional study of materials
properties, earthquake shaking, landslide potential, mineral hazards, seismic
velocity, and earthquake faults. In addition, the report contains new
information and ... interpretations about the regional geologic history and
framework. However, the regional scale of this report does not provide
sufficient detail for site development purposes. In addition, this map does
not take the place of fault-rupture hazard zones designated by the California
State Geologist (Hart and Bryant, 1997). Similarly, the database cannot be
used to identify or delineate landslides in the region.
This digital map database, compiled from previously published and unpublished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 (mageo.txt, mageo.pdf, or mageo.ps), 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.
The databases in this report were compiled in ARC/INFO, a commercial Geographic
Information System (Environmental Systems Research Institute, Redlands,
California), with version 3.0 of the menu interface ALACARTE (Fitzgibbon and
Wentworth, 1991, Fitzgibbon, 1991, Wentworth and Fitzgibbon, 1991). The files
are in either GRID (ARC/INFO raster data) format or COVERAGE (ARC/INFO vector
data) format. Coverages are stored in uncompressed ARC export format (ARC/INFO
version 7.x). ARC/INFO export files (files with the .e00 extension) can be
converted into ARC/INFO coverages in ARC/INFO (see below) and can be read by
some other Geographic Information Systems, such as MapInfo via ArcLink and
ESRI's ArcView (version 1.0 for Windows 3.1 to 3.11 is available for free from
ESRI's web site: http://www.esri.com ). The digital compilation was done in
version 7.1.1 of ARC/INFO with version 3.0 of the menu interface ALACARTE
(Fitzgibbon and Wentworth, 1991, Fitzgibbon, 1991, Wentworth and Fitzgibbon,
The geologic map information was digitized from stable originals of the
geologic maps at 1:62,500 scale. The author manuscripts (pen on mylar) were
scanned using a Altek monochrome scanner with a resolution of 800 dots per
inch. The scanned images were vectorized and transformed from scanner
coordinates to projection coordinates with digital tics placed by hand at
quadrangle corners. The scanned lines were edited interactively by hand using
ALACARTE, color boundaries were tagged as appropriate, and scanning artifacts
visible at 1:24,000 were removed.
8/31/99 This is the pre-release version of the report. There have been no
revisions to any part of the report.
Data Revision List
> File Report Version Last Update
> Last Updated
> mamap.ps 1.0
> maexpl.ps 1.0
> mageo.ps 1.0
> mamap.pdf 1.0
> maexpl.pdf 1.0
> mageo.pdf 1.0
> ma-geol.e00 1.0
> ma-strc.e00 1.0
> ma-blks.e00 1.0
> ma-altr.e00 1.0
> ma-quad.e00 1.0
> ma-corr.e00 1.0
> ma-so.e00 1.0
> ma-terr.e00 1.0
> mageo.txt 1.0
> mafig1.tif 1.0
> mafig2.tif 1.0
> madb.ps 1.0
> madb.pdf 1.0
> madb.txt 1.0
> import.aml 1.0
> mageol.met 1.0
This report has undergone two scientific peer reviews, one digital database
review, one review for conformity with geologic names policy, and review of the
plotfiles for conformity with USGS map standards.
This report consists of a set of geologic map database files (Arc/Info
coverages) and supporting text and plotfiles. In addition, the report includes
two sets of plotfiles (PostScript and PDF format) that will generate map sheets
and pamphlets similar to a traditional USGS Miscellaneous Field Studies Report.
These files are described below:
> ARC/INFO Resultant Description of Coverage
> export file Coverage
> ----------- ----------- --------------------------------
> ma-geol.e00 ma-geol/ Polygon and line coverage showing faults,
> depositional contacts, and rock units
> in the map area.
> ma-strc.e00 ma-strc/ Point and line coverage showing strike and dip
> information and fold axes.
> ma-blks.e00 ma-blks/ Point coverage showing location of high-grade
> blocks in Franciscan rock units.
> ma-altr.e00 ma-altr/ Polygon coverage showing areas of hydrothermal
> ma-quad.e00 ma-quad/ Line coverage showing index map of quadrangles
> in the map area. Lines and annotation only.
> ma-corr.e00 ma-corr/ Polygon and line coverage of the correlation
> table for the units in this map database.
> This database is not geospatial.
> ma-so.e00 ma-so/ Line coverage showing sources of data index
> map for this map database.
> ma-terr.e00 ma-terr/ Polygon and line coverage of the index map of
> tectonostratigraphic terranes in the map area.
> (Terranes are described in mageo.txt,
> mageo.ps, or mageo.pdf).
ASCII text files, including explanatory text, ARC/INFO key files, PostScript
and PDF plot files, and a ARC Macro Language file for conversion of ARC export
files into ARC coverages:
> mageo.ps A PostScript plot file of a report containing
> detailed unit descriptions and geological
> information, plus sources of data and references
> cited, with two figures.
> mageo.pdf A PDF version of mageo.ps.
> mageo.txt A text-only file containing an unformatted
> version of mageo.ps without figures.
> mafig1.tif A TIFF file of Figure 1 from mageo.ps
> mafig2.tif A TIFF file of Figure 2 from mageo.ps
> madb.ps A PostScript plot file of a pamphlet containing
> detailed information about the contents and
> availability of this report.
> madb.pdf A PDF version of madb.ps.
> madb.txt A text-only file containing an unformatted
> version of madb.ps.
> import.aml ASCII text file in ARC Macro Language to convert
> ARC export files to ARC coverages in ARC/INFO.
> mamap.ps A PostScript plottable file containing an image
> of the geologic map and base maps at a scale of
> 1:62,500, along with a simple map key.
> maexpl.ps A PostScript plot file containing an image of
> the explanation sheet, including terrane map,
> index maps, correlation chart, and unit
> mamap.pdf A PDF file containing an image of the geologic
> map and base maps at a scale of 1:62,500, along
> with a simple map key.
> maexpl.pdf A PDF file containing an image of the
> explanation sheet, including terrane map, index
> maps, correlation chart, and unit descriptions.
Base Map layers used in the preparation of the geologic map plotfiles were
derived from published digital maps (Aitken, 1997) obtained from the U.S.
Geological Survey Geologic Division Website for the Western Region
(http://wrgis.wr.usgs.gov). Please see the website for more detailed
information about the original databases. Because the base map digital files
are already available at the website mentioned above, they are not included in
the digital database package.
(Click for Interactive Map)
Data Set Citation
Dataset Originator/Creator: Blake, M.C., Jr.; Graymer, R.W.; Jones, D.L.; Soule, A.
Dataset Title: Digital geologic map and map database of parts of Marin, San Francisco, Alameda, Contra Costa, and Sonoma Counties, California
Dataset Series Name: U.S. Geological Survey Miscellaneous Field Studies Map
Dataset Release Date: 1999
Dataset Release Place: Menlo Park, CA
Dataset Publisher: U.S. Geological Survey
Data Presentation Form: geologic mapOnline Resource: http://pubs.usgs.gov/mf/2000/2337/
Start Date: 1999-01-01Stop Date: 1999-12-31
HUMAN DIMENSIONS > BOUNDARIES > ADMINISTRATIVE DIVISIONS
HUMAN DIMENSIONS > BOUNDARIES > POLITICAL DIVISIONS
HUMAN DIMENSIONS > NATURAL HAZARDS > EARTHQUAKES
LAND SURFACE > EROSION/SEDIMENTATION > LANDSLIDES
LAND SURFACE > EROSION/SEDIMENTATION > SEDIMENTS
LAND SURFACE > EROSION/SEDIMENTATION > STRATIGRAPHIC SEQUENCE
LAND SURFACE > GEOMORPHOLOGY > TECTONIC LANDFORMS/PROCESSES
SOLID EARTH > GEOMORPHIC LANDFORMS/PROCESSES > TECTONIC LANDFORMS
SOLID EARTH > ROCKS/MINERALS/CRYSTALS > NON-METALLIC MINERALS
SOLID EARTH > EARTH GASES/LIQUIDS > PETROLEUM
SOLID EARTH > ROCKS/MINERALS/CRYSTALS > BEDROCK LITHOLOGY
SOLID EARTH > ROCKS/MINERALS/CRYSTALS > IGNEOUS ROCKS
SOLID EARTH > ROCKS/MINERALS/CRYSTALS > METAMORPHIC ROCKS
SOLID EARTH > ROCKS/MINERALS/CRYSTALS > SEDIMENTARY ROCKS
SOLID EARTH > ROCKS/MINERALS/CRYSTALS > SEDIMENTS
SOLID EARTH > TECTONICS > EARTHQUAKES > EARTHQUAKE OCCURRENCES
SOLID EARTH > TECTONICS > PLATE TECTONICS > FAULT MOVEMENT
SOLID EARTH > TECTONICS > PLATE TECTONICS > FOLDS
SOLID EARTH > TECTONICS > PLATE TECTONICS > STRATIGRAPHIC SEQUENCE
SOLID EARTH > TECTONICS > VOLCANIC ACTIVITY > ERUPTION DYNAMICS > LAVA COMPOSITION/TEXTURE
SOLID EARTH > TECTONICS > VOLCANIC ACTIVITY > ERUPTION DYNAMICS > PYROCLASTICS COMPOSITION/TEXTURE
SOLID EARTH > TECTONICS > VOLCANIC ACTIVITY > ERUPTION DYNAMICS > ASH/DUST COMPOSITION
Use Constraints Please refer to the USGS Software User Rights Notice at http://water.usgs.gov/software/help/notice/ for complete use, copyright, and distribution information. The USGS provides no warranty, expressed or implied, as to the correctness of the furnished software or the suitability for any purpose. The software has been tested, but as with any complex software, there could be undetected errors. Users who find errors are requested to report them to the USGS.
References to non-USGS products, trade names, and (or) services are provided for information purposes only and do not constitute endorsement or warranty, express or implied, by the USGS, U.S. Department of Interior, or U.S. Government, as to their suitability, content, usefulness, functioning, completeness, or accuracy.
Distribution Media: Online
Distribution Size: 1.6 MB
Fees: No fees
Role: TECHNICAL CONTACT
Email: pbarlow at usgs.gov
10 Bearfoot Road Mail Stop 411
Province or State: MA
Postal Code: 01532
Role: SERF AUTHOR
Phone: (301) 614-6898
Email: Tyler.B.Stevens at nasa.gov
NASA Goddard Space Flight Center Global Change Master Directory
Province or State: MD
Postal Code: 20771
Barlow, P.M., and Moench, A.F., 2011, WTAQ version 2 — A computer program for analysis of aquifer tests in confined and water-table aquifers with alternative representations of drainage from the unsaturated zone: U.S. Geological Survey Techniques and Methods 3-B9, 41 p.
Barlow, P.M., and Moench, A.F., 1999, WTAQ — A computer program for calculating drawdowns and estimating hydraulic properties for confined and water-table aquifers: U.S. Geological Survey Water-Resources Investigations Report 99-4225, 74 p.
Creation and Review Dates