Metadata:
 
 Identification_Information:
   Citation:
     Citation_Information:
       Originator: Blake, M.C., Jr. 
       Originator: Graymer, R.W.
       Originator: Jones, D.L.
       Originator: Soule, A.
       Publication_Date: 1999
       Publication_Time: 
       Title: Digital geologic map and map database of parts of Marin, San 
           Francisco, Alameda, Contra Costa, and Sonoma Counties, California
       Edition: 1.0
       Geospatial_Data_Presentation_Form: geologic map
         Series_Name: U.S. Geological Survey Miscellaneous Field Studies Report
         Issue_Identification: 
      Publication_Information:
        Publication_Place: Menlo Park, CA
        Publisher: U.S. Geological Survey
      Other_Citation_Details: 
      Online_Linkage: http://wrgis.wr.usgs.gov/mf-map/mf
 
  Description: 
    Abstract:
      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     unpublished data, and new mapping by the authors, represents the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.

    Purpose:
      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.
     
 
 
    Supplemental_Information:
 
      Procedures_Used:
        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, 1991). 
        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. 

      Revisions:
        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

       
 
      Reviews_Applied_to_Data:
        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. 
 
      Related_Spatial_and_Tabular_Data_Sets:
        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
                                  alteration.

        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
                                descriptions.

        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 maps

        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.

      Other_References_Cited:

        Aitken, D.S., 1997, A digital version of the 1970 U.S. Geological Survey
      topographic map of the San Francisco Bay region, three sheets, 1:125,000
      scale: U.S. Geological Survey Open-File Report 97-500.

        Armstrong, C. F., and Gallagher, Kathy, 1977, Fossils from the
      Franciscan assemblage, Alcatraz Island: California Geology, v. 30, p. 134.

        Bailey, E. H., Blake, C. M., and Jones, D. L., 1970, On-land Mesozoic 
      oceanic crust in California Coast Ranges:  U.S. Geol. Prof. Paper 
      700-C; C70-C81.

        Bailey, E. H., Irwin, W. P., and Jones, D. L., 1964, Franciscan and
      related rocks and their significance in the geology of western California:
      Calif. Div. Mines and Geology, Bull. 183, 177 p.

        Berkland, J. O., 1964, Swelling vermiculite clay in the Franciscan
      Formation ofnorthern California--Its role in possible chemical
      stabilization of mobileslopes: Paper presented to the National Convention
      of the Assoc. of Engineering Geologists, Sacramento, CA, 6 p.

        Berkland, J. O., 1969, Geology of the Novato quadrangle, Marin Co., CA:
      Unpublished M.S. thesis, San Jose State University, San Jose, CA.

        Blake, M. C., Jr., Bartow, J. A., Frizzell, V. A., Jr., Schlocker,
      Julius, Sorg, Dennis, Wentworth, C. M., and Wright, R. H., 1974,
      Preliminary geologic map of Marin and San Francisco Counties and parts of
      Alameda, Contra Costa, and Sonoma Counties, California: U. S. Geol. Survey
      Map MF-574.

        Blake, M. C., Jr., Howell, D. G., and Jayko, A. S., 1984,
      Tectonostratigraphic terranes of the San Francisco Bay Region, in Blake,
      M. C., ed., 1984, Franciscan Geology of Northern California: Pacific
      Section S.E.P.M., Vol. 43, p. 5-22.

        Blake, M. C., Jr., Howell, D. G., and Jones, D. L., 1982, Preliminary
      tectonostratigraphic terrane map of California: U. S. Geol. Survey
      Open-File Report 82-593, 9 p., 3 maps, scale 1: 750, 000.

        Blake, M. C., Jr., Irwin, W. P., and Coleman, R. G., 1967, Upside-down
      metamorphic zonation, blueschist facies, along a regional thrust in
      California and Oregon: U. S. Geol. Survey Prof. Paper 575C, p. 1-9.

        Blake, M. C., Jr., and Jones, D. L., 1974, Origin of Franciscan melanges
      in northern California: S.E.P.M., Special Paper No. 19, p. 255-263.

        Blake, M.C., Jr., and Wentworth, C.M., 1999, Structure and metamorphism
      of the Franciscan Complex, Mt. Hamilton area, Northern California: 
      International rgGeology Review, v. 41, p. 417-424.

        Bonilla, M. G., 1971, Preliminary geolgic map of the San Francisco South
      quadrangle and part of the Hunters Point quadrangle, California:  
      U.S. Geol. Survey Misc. Field Studies Map MF-311, (1:24,000).

        Brown, R. D., Jr., 1970, Faults that are historically active or that
      show evidence of geologically young surface displacement, 
      San Francisco Bay Region:  A progress report:  Oct. 1970, U.S. 
      Geol. Survey Open File Map, (1:250,000).

        Brown, R. D., and Wolfe, E. W., 1970, Map showing recently active 
      breaks along the San Andreas fault between Pt. Delgada and 
      Bolinas Bay, California:  U.S. Geol. Survey Open File Map, 
      (1:48,000).

        Brabb, E.E., Graymer, R.W., and Jones, D.L., 1998, Geology of the Palo
      Alto 30 X 60 minute quadrangle, California:  A digital database:  U.S.
      Geological Survey Open-File Report 98-348, includes plotfiles for 2
      sheets, scale 1:100,000, database description pamphlet, 9 pp, geologic
      description and interpretation pamphlet, 16 p.

        Budding, K.E., Schwartz, D.P., and Oppenheimer, D.H., 1991, Slip rate,
      earthquake recurrence, and seismogenic potential of the Rodgers Creek
      fault zone, Northern California; initial results:  Geophysical Research
      Letters, v. 18, no. 3, p. 447-450.

        Clague, J. J., 1969, The landslides in the southeast part of Point Reyes
      National Seashore:  unpublished University of California at Berkeley M.A.
      thesis.

        Clark, J.C., and Brabb, E.E., 1997, Geology of Point Reyes National
      Seashore and vicinity:  a digital database:  U.S. Geological Survey
      Open-File Report 97-456.

        Clark, J. C., Wahrhaftig, Clyde, and Brabb, E. E., 1991, San Francisco
      to Point Reyes: Both sides of the San Andreas fault, in  Sloan, D., and
      Wagner, D. L., eds., Geologic Excursions in Northern California:
      California Division of Mines and Geology, Special Publication 109, p.
      11-23.

        Coleman, R.G., 1996, [abs.], Prospecting for ophiolites in the
      California continental margin:  Eos, Transactions of the American
      Geophysical Union, v. 77, no. 46, p. 743.

        Coleman, R. G., and Lee, D. F., 1963, Glaucophane-bearing metamorphic 
      rock types of the Cazadero area, California:  Jour. Petrology, v. 4, 
      pt. 2., p. 260-301.

        Crawford, K.E., 1976, Reconnaissance geologic map of the Eylar Mountain
      quadrangle, Santa Clara and Alameda Counties, California:  U.S. Geological
      Survey Miscellaneous Field Studies Map MF-764, scale 1:24,000.

        Curry, F. B., Cox, Allan, and Engebretson, D. C., 1984, Paleomagnetism
      of Franciscan rocks in the Marin Headlands, in  Blake, M. C., Jr., ed.,
      Franciscan Geology of Northern California: Pacific Section S.E.P.M., Vol.
      43, p. 89-98.

        Curtis, G. H., Evernden, J. F., and Lipson, J., 1958, Age determinations
      of some granitic rocks in California by the potassium-argon method:  
      California Division of Mines Spec. Rpt. 54, 16 p.

        Drinkwater, J.L., Sorg, D.H., and Russell, P.C., 1992, Geologic map
      showing ages and mineralization of the Quien Sabe Volcanics, Mariposa Peak
      quadrangle, west-central California:  U.S. Geological Survey Miscellaneous
      Field Studies Map MF-2200, 1 sheet, scale 1:24,000.

        Evarts, R.C., 1977, The geology and petrology of the Del Puerto
      ophiolite, Diablo Range, central California Coast Ranges, in Coleman,
      R.G., and Irwin, W.P., eds., North American ophiolites:  Bulletin, Oregon
      Department of Geology and Mineral Industries, v. 95, p. 121-139.

        Fitzgibbon, T.T., 1991, ALACARTE installation and system manual (version
      1.0): U.S. Geological Survey Open-File Report 91-587B.

        Fitzgibbon, T.T., and Wentworth, C.M., 1991, ALACARTE user interface -
      AML code and demonstration maps (version 1.0):  U.S. Geological Survey
      Open-File Report 91-587A.

        Fox, K.F., Jr., Fleck, R.J., Curtis, G.H., and Meyer, C.E., 1985a,
      Implications of the northwestwardly younger age of the volcanic rocks of
      west central California:  Geological Society of America Bulletin, v. 96,
      p. 647-654.

        Fox, K.F., Jr., Fleck, R.J., Curtis, G.H., and Meyer, C.E., 1985b,
      Potassium-argon and fission track ages of the Sonoma Volcanics in an area
      north of San Pablo Bay, California:  U.S. Geological Survey Miscellaneous
      Field Studies Map MF-1753, 9 p., 1 sheet, scale 1:125,000.

        Galloway, A.J., 1966, Point Reyes Peninsula and San Andreas fault zone,
      in Bailey, E.H., ed., Geology of Northern California:  California Division
      of Mines and Geology Bulletin 190, p. 429-440.

        Gluskoter, H. J., 1962, Geology of a portion of western Marin County,
      California: Unpublished Ph.D. thesis, University of California, Berkeley,
      CA, 184 p.

        Gluskoter, H. J., 1969, Geology of a portion of western Marin County, 
      California:  California Division of Mines Map Sheet 11, (1:48,000).

        Graymer, R.W., 1999, Offset history of the Hayward fault zone, San
      Francisco Bay region, California [abs.]:  Geological Society of America
      Abstracts with Programs, v.

        Graymer, R.W., Jones, D.L., and Brabb, E.E., 1996, Preliminary geologic
      map emphasizing bedrock formations in Alameda County, California:  A
      digital database:  U.S. Geological Survey Open-File Report 96-252,
      includes plotfiles for 2 sheets, scale 1:75,000, database description
      pamphlet, 14 p., geologic description and interpretation pamphlet, 33 p.

        Graymer, R.W., Jones, D.L., and Brabb, E.E., 1999, Geology of the
      Cordelia and the northern part of the Benicia 7.5 minute quadrangles,
      California:  A Digital Map Database:  U.S. Geological Survey Open-File
      Report 99-162, includes plotfiles for one sheet, scale 1:24,000, database
      description pamphlet, 11 p., geologic description and interpretation
      pamphlet, 8 p.

        Grimsich, J.L., Scott, G.R., Swisher, C.C., III, and Curtis, G.H., 1996,
      Paleomagnetism and 40Ar/39Ar dating of the Miocene Contra Costa Group,
      Berkeley Hills, California [abs.]:  EOS, Transactions, American
      Geophysical Union, v. 77, no. 46, p. 165.

        Gromme, Sherman, 1984, Paleomagnetism of Franciscan basalt, Marin
      County, California, revisited, in  Blake, M. C., Jr., ed., Pacific Section
      S.E.P.M., Vol. 43, p. 113-119.

        Hagstrum, J. T., and Murchey, B. L., 1993, Deposition of Franciscan
      Complex cherts along the paleoequator and accretion to the American margin
      at tropical paleolatitudes: Geol Soc. America, Bull., v. 105, p. 766-778.

        Harms, T.A., Jayko, A.S., and Blake, M.C., Jr., 1992, Kinematic evidence
      for extensional unroofing of the Franciscan complex along the Coast Range
      fault, northern Diablo Range, California:  Tectonics, v. 11, p. 228-241.

        Hart, E.W., and Bryant, W.A., 1997, Fault-rupture hazard zones in
      California: California Division of Mines and Geology Special Publication
      42, revised 1997, 38 p.

        Irwin, W.P., 1973, Ophiolite belts in the Klamath Mountains:  U.S.
      Geological Survey Professional Paper 850, 60 p.

        James, E. W., Kimbrough, D. L., and Mattinson, J. M., 1993, Evaluation
      of displacements of pre-Tertiary rocks on the northern San Andreas fault
      using U-Pb zircon dating, initial Sr, and common Pb isotopic ratios, in 
      Powell, R. E., Weldon, R. J. II, and Matti, J. C., eds., The San Andreas
      fault system; displacement, palinspastic reconstructions, and geologic
      evolution: Geol. Soc. America Memoir 178, p. 257-271.

        Jayko, A. S., and Blake, M. C., Jr., 1984, Sedimentary petrology of
      graywacke of the Franciscan Complex in the northern San Francisco Bay
      Area, California, in Blake, M. C., Jr., ed., Franciscan Geology of
      Northern California: Pacific Section S.E.P.M., Vol. 43, p. 121-134.

        Jayko, A. S., and Blake, M. C., Jr., 1993, Northward displacement of
      forearc slivers in the Coast Ranges of California and southwest Oregon
      during the late Mesozoic and early Cenozoic,in  Dunn, G., and McDougall,
      K., eds., 1993, Mesozoic Paleogeography of the Western United States-II,
      Pacific Section SEPM, Book 71, p. 19-36.

        Jones, D.L., 1987, Extensional faults in collisional settings;
      comparison of California and Japan [abs.]:  Geological Society of America
      Abstracts with Programs, v. 19, no. 7, p. 720.

        Jones, D.L., and Curtis, G.H., 1991, Guide to the geology of the
      Berkeley Hills, central Coast Ranges, California, in Sloan, D., and
      Wagner, D.L., eds., Geologic Excursions in Northern California:  San
      Francisco to the Sierra Nevada, California Division of Mines and Geology
      Special Publication 109, p. 63-74.

        Jones, D. L., Graymer, R. W., Wang, C., McEvilly, T. V., and Lomax, A,
      1994, Neogene transpressive evolution of the California Coast Ranges:
      Tectonics, v. 13, p. 561-574.

        Karl, S. M., 1984, Sedimentologic, diagenetic, and geochemical analysis
      of Upper Mesozoic ribbon cherts from the Franciscan assemblage at the
      Marin Headlands, California, in  Blake, M. C., Jr., ed., 1984, Franciscan
      Geology of Northern California: Pacific Section S.E.P.M., Vol. 43, p.
      71-88.

        Krueger, S.W., and Jones, D.L., 1989, Extensional fault uplift of
      regional Franciscan blueschists due to subduction shallowing during the
      Laramide Orogeny: Geology, v. 17, p. 1157-1159.

        Lawson, A. C., 1914, Description of the San Francisco District: U. S.
      Geol. Survey Folio 193.

        Lawson, A.C., and others, 1908, The California earthquake of April 18,
      1906--Report of the State Earthquake Investigation Commission:  Carnegie
      Inst. Washington, Pub. 87, v. 1, 451 p.

        Leith, C.J., 1949, Geology of the Quien Sabe quadrangle: California:
      California Division of Mines Bulletin 147, 60 p.

        Lindquist, T.A., and Morganthaler, J.D., 1991, Radiometric ages of rocks
      in the San Francisco-San Jose quadrangles, California:  Calif. Div. of
      Mines and Geol. Map No. 5, scale 1:250,000.

        McLaughlin, R. J., Sliter, W. V., Sorg, D. H., Russell, P. C., and
      Sarna-Wojcicki, A. M., 1996, Large-scale right-slip displacement on the
      East San Francisco Bay Region fault system: Implications for location of
      late Miocene to Pliocene Pacific plate boundary: Tectonics, v. 15, p.
      1-18.

        Mankinen, E.A., 1972, Paleomagnetism and potassium-argon ages of the
      Sonoma Volcanics, California:  Geological Society of America Bulletin, v.
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        Morse, R.R., and Bailey, T.L., 1935, Geological observations in the
      Petaluma district, California:  Geological Society of America Bulletin, v.
      46, p. 1437-1456.

        Murchey, B. M., 1984, Stratigraphy and lithostratigraphy of chert in the
      Franciscan Complex, Marin Headlands, California, in  Blake, M. C., Jr.,
      ed., 1984, Franciscan Geology of Northern California: Pacific Section
      S.E.P.M., Vol. 43, p. 51-70.

        Murchey, B. M., and Blake, M. C., Jr., 1993, Evidence for subduction of
      a major ocean plate along the California margin during the Middle to early
      Late Jurassic, in  Dunn, G., and McDougall, K., eds., Mesozoic
      Paleogeography of the Western United States-II, Pacific Section SEPM Book
      71, p. 1-18.

        Murchey, B. M., and Jones, D. L., 1984, Age and significance of chert in
      the Franciscan Complex in the San Francisco Bay Region, in  Blake, M. C.,
      Jr., ed., Franciscan Geology of Northern California: Pacific Section
      S.E.P.M., Vol. 43, p. 23-30.

        Murray, R.W., Bucholtz-tenBrink, M.R., Jones, D.L., Gerlach, D.C., Russ,
      G.P., III, 1990, Rare earth elements as indicators of different marine
      depositional environments in chert and shale:  Geology, v. 18, no. 3, p.
      268-271.

        Nichols, D. R., and Wright, N. A., 1971, Preliminary map of historic 
      margins of marshland, San Francisco Bay, California:  U.S. Geol. 
      Survey Open File Map (1:125,000).

        Osuch, L.T., 1970, Geology of the Three Sisters quadrangle, California: 
      Berkeley, University of California, M.S. thesis, 55 p.

        O'Rourke, J. T., 1969, Geology of the San Anselmo Area:  unpublished 
      map, City of San Anselmo Planning Department, (1:480).

        Page, B.M., 1966, Geology of the Coast Ranges of California, in Bailey,
      E.H., ed., Geology of Northern California:  California Division of Mines
      and Geology Bulletin 190, p. 255-276.

        ______1970, Time of completion of underthrusting of Franciscan beneath
      Great Valley rocks west of Salinian block, California:  Geological Society
      of America Bulletin, v. 81, no. 9, p. 2825-2833.

        Radbruch, D. H., 1957, Areal and engineering geology of the Oakland 
      west quadrangle, California:  U.S. Geol. Survey Misc. Geol. Inv. 
      Map I-239, scale 1:24,000.

        Ross, D. C., 1972, Petrographic and chemical reconnaissance study of 
      some granitic and gneissic rocks near the San Andreas fault from 
      Bodega Head to Cajon Pass, California:  U.S. Geol. Survey Prof. 
      Paper 698.

        Sarna-Wojcicki, A.M., 1976, Correlation of Late Cenozoic tuffs in the
      central Coast Ranges of California by means of trace- and minor-element
      chemistry:  U.S. Geological Survey Professional Paper 972, 30 p.

        Schlocker, Julius, 1974, Geology of the San Francisco North Quadrangle,
      California: U. S. Geol. Survey Prof. Paper 782, 109 p.

        Schlocker, J., Bonilla, M. G., and Radbruch, D. H., 1958, Geology of the
      San Francisco North quadrangle, California:  U.S. Geol. Survey 
      Misc. Geol. Inv. Map I-272, scale 1:24,000.

        Shervais, J. V., 1989, Geochemistry of igneous rocks from Marin
      Headlands, in Wahrhaftig, C. and Sloan, D., eds., Geology of San Francisco
      and Vicinity: 28th International Geol. Congress Field Trip Guidebook T105,
      Amer. Geophys. Union, p. 40-41.

        Sliter, W. V., 1984, Foraminifers from Cretaceous limestone of the
      Franciscan Complex, northern California, in  Blake, M. C., Jr., ed.,
      Franciscan Geology of Northern California: Pacific Section S.E.P.M., Vol.
      43, p. 149-162.

        Sliter, W. V., McDougall, Kristin, Murchey, B. M., and Kohnen, E. V.,
      1993, Mesozoic and Cenozoic microfossils from geologic units within the
      San Jose 1:100,000 quadrangle, California: U. S. Geol. Survey Open-File
      report 93-344, map scale 1: 100, 000.

        Swanson, S. E., and Schiffman, P., 1979, Textural evolution and
      metamorphism of pillow basalts from the Franciscan Complex, western Marin
      County, California: Contr. to Mineralogy and Petrology, v. 69, no. 3, p.
      291-299.

        Taliaferro, N.L., 1948, Geologic map of the Hollister quadrangle,
      California: California Division of Mines Bulletin 143, scale 1:62,500.

        Tarduno, J. A., McWilliams, M., Debiche, M. G., Sliter, W. V., and
      Blake, M. C., Jr., 1985, Franciscan Complex Calera limestones--Accreted
      remnants of Farallon plate ocean plateaus: Nature, v. 317, p. 345- 347.

        Ver Planck, W. E., 1953, Mines, mineral resources and mineral industries
      of Marin Co., California:  California Journal of Mines and Geology, v. 51,
      no. 3, p. 221-289.

        Wahrhaftig, Clyde, 1984, Structure of the Marin Headlands block,
      California: A progress report, in  Blake, M. C., Jr., ed., 1984,
      Franciscan Geology of Northern California: Pacific Section S.E.P.M., Vol.
      43, p. 31-50.

        Wakabayashi, John, 1992, Nappes, tectonics of oblique plate convergence,
      and metamorphic evolution related to 140 million years of continuous
      subduction, Franciscan Complex, California: Journal of Geology, v. 100, p.
      19-40.

        Wentworth, C.M., Blake, M.C., Jr., Jones, D.L., Walter, A.W., and
      Zoback, M.D., 1984, Tectonic wedging associated with emplacement of the
      Franciscan Assemblage, California Coast Ranges, in , Blake, M.C., Jr.,
      ed., Franciscan geology of Northern California:  Pacific Section, Society
      of Economic Paleontologists and Mineralogists, Book 43, p. 163-174.

        Wentworth, C.M., Blake, M.C., Jr., McLaughlin, R.J., and Graymer, R.W.,
      1998a, Preliminary geologic map of the San Jose 30 X 60 minute quadrangle,
      California: A digital map image:  U.S. Geological Survey Open-File Report
      98-795, includes plotfiles for 2 sheets, scale 1:100,000, database
      description pamphlet, 6 pp, geologic description and interpretation
      pamphlet, 47 p.

        Wentworth, C. M., Jones, D. L., and Brabb, E. E., 1998b, Geology and
      regional correlation of the Cretaceous and Paleogene rocks of the Gualala
      block, California, in Elder, W.P., ed., Geology and tectonics of the
      Gualala block, Northern California:  Pacific Section, Society of Economic
      Paleontologists and Mineralogists, Book 84, p. 3-26.

        Wright, R.H., 1974, Map showing the distribution of potassium feldspar
      and fossils in Mesozoic rocks of Marin and San Francisco Counties, and
      parts of Alameda, Contra Costa, and Sonoma Counties, California:  U.S.
      Geological Survey Miscellaneous Field Studies Map MF-573, 1 sheet, scale
      1:125,000.

        Wright, R.H., 1984, Geology of the Nicasio Reservoir terrane, Marin
      County, California, in Blake, M.C., Jr., ed., Franciscan geology of
      Northern California: Pacific Section, Society of Economic Paleontologists
      and Mineralogists, Book 43, p. 99-111.

        Youngman, M.R., 1986, K-Ar and 40Ar/39Ar geochronology, geochemistry,
      and structural reinterpretation of the southern Sonoma Volcanic field,
      Sonoma County, California:  Berkeley, University of California, M.S.
      thesis, 92 p., 1 plate.
 
 
      Notes:
        (Any additional comments, caveats, etc. NOTE: In the 7.0.3 and earlier
      versions of the DOCUMENT narrative file, this was the last section. The
      following sections were added for user convenience and to provide
      compliance with the FGDC Standard.)
 
 
  Time_Period_of_Content:
    Time_Period_Information:
      Single_Date/Time:
        Calendar_Date: 1999
    Currentness_Reference:
      The date given is the publication date.  The information in the report
    is the most up-to-date available at the time of publication. 
 
  Status:
    Progress:  Pre-Publication
    Maintenance_and_Update_Frequency: As needed 
 
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -122.9902372
      East_Bounding_Coordinate: -122.24855051
      North_Bounding_Coordinate: 38.2626288
      South_Bounding_Coordinate: 37.73826442
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus:  None
      Theme_Keyword:  geology
      Theme_Keyword:  bedrock geology
      Theme_Keyword:  surficial geology
      Theme_Keyword:  geologic history
      Theme_Keyword:  Franciscan complex
      Theme_Keyword:  Coast Range ophiolite
      Theme_Keyword:  Great Valley complex
      Theme_Keyword:  terranes
      Theme_Keyword:  geologic structures
      Theme_Keyword:  Hayward fault
      Theme_Keyword:  Rodgers Creek fault
      Theme_Keyword:  Tolay fault
      Theme_Keyword:  San Andreas fault
      Theme_Keyword:  Miocene volcanics
      Theme_Keyword:  Sonoma Volcanics
      Theme_Keyword:  fault offset
    Place:
      Place_Keyword_Thesaurus:  None
      Place_Keyword:  United States of America
      Place_Keyword:  California
      Place_Keyword:  Marin County
      Place_Keyword:  San Francisco County
      Place_Keyword:  Alameda County
      Place_Keyword:  Contra Costa County
      Place_Keyword:  Sonoma County
    Stratum:
      Stratum_Keyword_Thesaurus:  None
      Stratum_Keyword: Artificial fill
      Stratum_Keyword: Artificial fill over marine and marsh deposits
      Stratum_Keyword: Beach sand
      Stratum_Keyword: Dune sand
      Stratum_Keyword: Marine and marsh deposits
      Stratum_Keyword: Landslide deposits
      Stratum_Keyword: Alluvium
      Stratum_Keyword: Slope debris and ravine fill
      Stratum_Keyword: Undifferentiated surficial deposits
      Stratum_Keyword: Volcanic gravel
      Stratum_Keyword: Older beach deposits
      Stratum_Keyword: Older alluvium
      Stratum_Keyword: Marine and stream terrace deposits
      Stratum_Keyword: Millerton Formation
      Stratum_Keyword: Colma Formation
      Stratum_Keyword: Merced Formation
      Stratum_Keyword: Wilson Grove Formation
      Stratum_Keyword: Petaluma Formation
      Stratum_Keyword: Siltstone and claystone member
      Stratum_Keyword: Gray claystone member
      Stratum_Keyword: Sonoma Volcanics
      Stratum_Keyword: Rhyolite lava flows
      Stratum_Keyword: Rhyolite plugs and dikes
      Stratum_Keyword: Andesite to basalt lava flows
      Stratum_Keyword: Pumiceous ash flow tuff
      Stratum_Keyword: Unnamed sandstone
      Stratum_Keyword: Monterey Shale
      Stratum_Keyword: Franciscan Complex
      Stratum_Keyword: Sandstone and shale
      Stratum_Keyword: Massive sandstone
      Stratum_Keyword: Thin-bedded shale
      Stratum_Keyword: Limestone and chert
      Stratum_Keyword: Greenstone
      Stratum_Keyword: Chert
      Stratum_Keyword: Graywacke
      Stratum_Keyword: Diabase
      Stratum_Keyword: Metagraywacke
      Stratum_Keyword: Chert
      Stratum_Keyword: Greenstone and chert
      Stratum_Keyword: Greenstone
      Stratum_Keyword: Meta-greenstone
      Stratum_Keyword: Metachert
      Stratum_Keyword: Meta-greenstone and metachert
      Stratum_Keyword: Greenstone
      Stratum_Keyword: Metamorphic rocks, gneissic
      Stratum_Keyword: Massive serpentinite
      Stratum_Keyword: Melange
      Stratum_Keyword: Great Valley Complex
      Stratum_Keyword: Undivided sandstone, shale, and conglomerate
      Stratum_Keyword: Novato Conglomerate
      Stratum_Keyword: Sandstone and claystone
      Stratum_Keyword: Serpentinite
      Stratum_Keyword: Silica-carbonate rock
    Temporal:
      Temporal_Keyword_Thesaurus:  None
      Temporal_Keyword: Mesozoic
      Temporal_Keyword: Jurassic
      Temporal_Keyword: Cretaceous
      Temporal_Keyword: Cenozoic
      Temporal_Keyword: Tertiary
      Temporal_Keyword: Neogene
      Temporal_Keyword: Miocene
      Temporal_Keyword: Pliocene
      Temporal_Keyword: Quaternary
      Temporal_Keyword: Pleistocene
      Temporal_Keyword: Holocene

  Access_Constraints:  None 
 
  Use_Constraints:
    Uses of this digital geologic map should not violate the spatial resolution
   of the data.  Although the digital form of the data removes the constraint
   imposed by the scale of a paper map, the detail and accuracy inherent in map
   scale are also present in the digital data.  The fact that this database was
   edited for a scale of 1:62,500 means that higher resolution information is
   not present in the dataset.  Plotting at scales larger than 1:62,500 will not
   yield greater real detail, although it may reveal fine-scale irregularities
   below the intended resolution of the database.  Similarly, where this
   database is used in combination with other data of higher resolution, the
   resolution of the combined output will be limited by the lower resolution of
   these data.
 
 
  Point_of_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: USGS Western Geologic Mapping Team
        Contact_Person: Database coordinator
      Contact_Address:
        Address_Type: mailing address
        Address: 345 Middlefield Road, MS 975
        City: Menlo Park
        State_or_Province: CA
        Postal_Code: 94025
        Country: USA

  Browse_Graphic:
    Browse_Graphic_File_Name: <http://wrgis.wr.usgs.gov/mf-map/mf####/mamap.jpg>
    Browse_Graphic_File_Description: Image of entire map on black background
    Browse_Graphic_File_Type: JPEG
  Browse_Graphic:
    Browse_Graphic_File_Name:
          <http://wrgis.wr.usgs.gov/mf-map/mf####/mamap.pdf>
    Browse_Graphic_File_Description:
      A PDF representation of the geologic map and base maps at a scale of
      1:62,500 (Sheet 1).  5.1 megabytes.
    Browse_Graphic_File_Type: PDF
  Browse_Graphic:
    Browse_Graphic_File_Name:
          <http://wrgis.wr.usgs.gov/mf-map/mf####/maexpl.pdf>
    Browse_Graphic_File_Description:
      A PDF representation of the map keys and index maps (Sheet 2).  
      1.3 megabytes.
    Browse_Graphic_File_Type: PDF

 
  Data_Set_Credit:
     We would like to acknowledge our many colleagues at the USGS, University of
   California, and Stanford University for their many contributions over the
   years. We would especially like to acknowledge R.C. Jachens and E.E. Brabb
   for many organizational efforts, participation in the new mapping, ideas
   about regional structure, and insightful review of our draft manuscript.
     We are grateful to the following U.S. Geological Survey paleontologists
   who have examined our fossils and provided ages necessary to establish the
   stratigraphic sequence and structure:  David Bukry (Cretaceous and Tertiary 
   nannoplankton), Kristin McDougall (Tertiary foraminifers), William Sliter
   (deceased - Cretaceous and Eocene foraminifers), John Barron (Tertiary
   diatoms), Charles Powell, II (Tertiary mollusks), and Bonita Murchey
   (Mesozoic radiolaria).
     We are also very grateful to managers and staff of Chevron, EXXON,
   UNOCAL, ARCO, and Shell Petroleum Companies who have provided reports, maps,
   picked slides, and residues for about 25,000 microfossil localities in the
   San Francisco Bay Region.
 
 
  Security_Information:
    Security_Classification_System: None
    Security_Classification:  Unclassified
    Security_Handling_Description: None

  Native_Data_Set_Environment: SunOS, 5.5.1, sun4u UNIX, ARC/INFO version 7.2.1

  Cross_Reference:
    Citation_Information:
      Originator: Unknown
      Publication_Date: 
      Publication_Time: 
      Title: 
      Edition: 
      Geospatial_Data_Presentation_Form: 
      Series_Information:
        Series_Name: 
        Issue_Identification: 
      Publication_Information:
        Publication_Place: 
        Publisher: 
      Other_Citation_Details: 
      Online_Linkage: 
 
 Data_Quality_Information:
   Attribute_Accuracy:
     Attribute_Accuracy_Report:  See Entity_Attribute_Information
     Quantitative_Attribute_Accuracy_Assessment:
       Attribute_Accuracy_Value:  See Explanation
       Attribute_Accuracy_Explanation:
          Attribute accuracy is described, where present, with each
        attribute defined in the Entity and Attribute Section.

   Logical_Consistency_Report:  Polygon and chain-node topology present

   Completeness_Report:
     The report is intended to describe completely the bedrock geology at
    1:62,500 scale.  Geologic information only mappable at larger scale has
    been omitted.  In addition, landslide deposits are for the most part not
    recorded.  Further, Quaternary surficial deposits in many areas have been
    intentionally undifferentiated. 
 
   Positional_Accuracy:
     Horizontal_Positional_Accuracy:
       Horizontal_Positional_Accuracy_Report:
         Well located data items are intended to have a horizontal positional
        accuracy within .2 mm at 1:62,500 scale, or within 12.5 meters on
        the ground.  The general positional accuracy of each line in the
        database is indicated within the LTYPE field in the Arc Attribute
        Table (see below).  Points in the database are generally considered
        to be well located.  The position of each data item is derived from
        the USGS topographic base map, and therefore additional inaccuracies
        arising from inaccuracies in the base map may also be encountered.
        See Aitken (1997) for information regarding the horizontal positional
        accuracy of the basemaps.
 
     Vertical_Positional_Accuracy:
       Vertical_Positional_Accuracy_Report:
       No vertical positional data recorded.  See Aitken (1997) for information
       regarding the vertical positional accuracy of the basemaps used to
       create the plotfiles of the geologic maps. 
 
  Lineage: See also Supplemental_Information:
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Fox, K.F., Jr
          Publication_Date:
          Title: unpublished geologic map
      Source_Scale_Denominator: 
      Type_Of_Source_Media:
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
          Calendar_Date: 1971
        Source_Currentness_Reference: date of mapping
      Source_Citation_Abbreviation:
      Source_Contribution: Source map for region 1 (see coverage ma-so or
                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
  
    Source_Citation:
      Citation_Information:
        Originator: Brown, R.D., Jr
        Publication_Date: 1970
        Title:  Faults that are historically active or that show evidence of
              geologically young surface displacement, San Francisco Bay Region:
              A progress report
          Series_Information:
            Series_Name: U.S. Geological Survey Open-File Report
            Issue_Identification:
      Source_Scale_Denominator: 250,000
      Type_Of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1970
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: Brown, 1970
      Source_Contribution: Source map for region 1 (see coverage ma-so or
                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)

  
    Source_Citation:
      Citation_Information:
        Originator: Weaver
        Publication_Date: 1949
        Title:
      Source_Scale_Denominator: 62500
      Type_Of_Source_Media:
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
          Calendar_Date:
        Source_Currentness_Reference:
      Source_Citation_Abbreviation:
      Source_Contribution: Source map for region 2 (see coverage ma-so or
                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
  
    Source_Citation:
      Citation_Information:
        Originator: Louke, G.
        Publication_Date: 
        Title: unpublished geologic investigations
      Source_Scale_Denominator: 
      Type_Of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_of_Dates/Times:
            Beginning_Date: 1968
            Ending_Date: 1970
        Source_Currentness_Reference: date of mapping
      Source_Citation_Abbreviation:
      Source_Contribution: Source map for region 2 (see coverage ma-so or
                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
  
    Source_Citation:
      Citation_Information:
        Originator: Bartow, J.A.
        Publication_Date:
        Title: unpublished photogeology and field reconnaissance
      Source_Scale_Denominator: 
      Type_Of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1972
        Source_Currentness_Reference: date of study
      Source_Citation_Abbreviation:
      Source_Contribution: Source map for region 2 (see coverage ma-so or
                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
  
    Source_Citation:
      Citation_Information:
        Originator: Nichols, D.R.
        Originator: Wright, N.A.
        Publication_Date: 1971
        Title:  Preliminary map of historic margins of marshland, San Francisco
              Bay, California
          Series_Information:
            Series_Name: U.S. Geological Survey Open-File Report
            Issue_Identification:
      Source_Scale_Denominator: 125,000
      Type_Of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1971
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: Nichols and Wright, 1971
      Source_Contribution: Source map for region 3 (see coverage ma-so or
                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
  
    Source_Citation:
      Citation_Information:
        Originator: Rose, R.L.
        Publication_Date:
        Title: unpublished geologic investigations
      Source_Scale_Denominator: 
      Type_Of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 
        Source_Currentness_Reference:
      Source_Citation_Abbreviation:
      Source_Contribution: Source map for region 4 (see coverage ma-so or
                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
  
    Source_Citation:
      Citation_Information:
        Originator: Bartow, J.A
        Publication_Date:
        Title: unpublished geologic investigations
      Source_Scale_Denominator: 
      Type_Of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1970
        Source_Currentness_Reference: date of study
      Source_Citation_Abbreviation:
      Source_Contribution: Source map for region 4 (see coverage ma-so or
                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
  
    Source_Citation:
      Citation_Information:
        Originator: Blake, M.C., Jr.
        Originator: Wright, R.H.
        Publication_Date:
        Title: unpublished geologic investigations
      Source_Scale_Denominator: 
      Type_Of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_of_Dates/Times:
            Beginning_Date: 1970
            Ending_Date: 1971
        Source_Currentness_Reference: date of study
      Source_Citation_Abbreviation:
      Source_Contribution: Source map for region 4 (see coverage ma-so or
                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
  
    Source_Citation:
      Citation_Information:
        Originator: Wentworth, C.M.
        Publication_Date:
        Title: unpublished photogeology
      Source_Scale_Denominator: 
      Type_Of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1971
        Source_Currentness_Reference: date of study
      Source_Citation_Abbreviation:
      Source_Contribution: Source map for region 4 (see coverage ma-so or
                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
  
    Source_Citation:
      Citation_Information:
        Originator: Berkland, J.O.
        Publication_Date: 1969
        Title: Geology of the Novato quadrangle, Marin County, California
      Source_Scale_Denominator: 24000
      Type_Of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1969
        Source_Currentness_Reference: date of publication
      Source_Citation_Abbreviation: Berkland, 1969
      Source_Contribution: Source map for region 5 (see coverage ma-so or
                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
  
    Source_Citation:
      Citation_Information:
        Originator: Berkland, J.O.
        Publication_Date:
        Title: unpublished geologic investigations
      Source_Scale_Denominator: 
      Type_Of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 
        Source_Currentness_Reference:
      Source_Citation_Abbreviation:
      Source_Contribution: Source map for region 5a (see coverage ma-so or
                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
  
    Source_Citation:
      Citation_Information:
        Originator: O'Rourke, J.T.
        Publication_Date: 1969
        Title: Geology of the San Anselmo Area
      Source_Scale_Denominator: 480
      Type_Of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1969
        Source_Currentness_Reference: date of study
      Source_Citation_Abbreviation: O'Rourke, 1969
      Source_Contribution: Source map for region 6 (see coverage ma-so or
                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
  
    Source_Citation:
      Citation_Information:
        Originator: Blake, M.C., Jr.
        Originator: Wright, R.H.
        Publication_Date:
        Title: minor unpublished geologic investigations
      Source_Scale_Denominator: 
      Type_Of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1971
        Source_Currentness_Reference: date of study
      Source_Citation_Abbreviation:
      Source_Contribution: Source map for region 6 (see coverage ma-so or
                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
  
    Source_Citation:
      Citation_Information:
        Originator: Rice, S.
        Publication_Date:
        Title: unpublished geologic investigations
      Source_Scale_Denominator: 
      Type_Of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_of_Dates/Times:
            Beginning_Date: 1970
            Ending_Date: 1971
        Source_Currentness_Reference: date of study
      Source_Citation_Abbreviation:
      Source_Contribution: Source map for region 7 (see coverage ma-so or
                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
  
    Source_Citation:
      Citation_Information:
        Originator: Wahrhaftig, C.
        Publication_Date: 1984
        Title: Structure of the Marin Headlands block, California:  A progress
             report
          Series_Information:
            Series_Name: Pacific Section, SEPM
            Issue_Identification: 43
      Source_Scale_Denominator: 
      Type_Of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1984
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: Wahrhaftig, 1984
      Source_Contribution: Source map for region 7 (see coverage ma-so or
                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
  
    Source_Citation:
      Citation_Information:
        Originator: Wahrhaftig, C.
        Publication_Date: 1989
        Title:
      Source_Scale_Denominator: 
      Type_Of_Source_Media:
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date:
        Source_Currentness_Reference:
      Source_Citation_Abbreviation: Wahrhaftig, 1989
      Source_Contribution: Source map for region 7 (see coverage ma-so or
                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
  
    Source_Citation:
      Citation_Information:
        Originator: Blake, M.C., Jr.
        Originator: Wright, R.H.
        Publication_Date:
        Title: minor unpublished geologic investigations
      Source_Scale_Denominator: 
      Type_Of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_of_Dates/Times:
            Beginning_Date: 1970
            Ending_Date: 1971
        Source_Currentness_Reference: date of study
      Source_Citation_Abbreviation:
      Source_Contribution: Source map for region 7 (see coverage ma-so or
                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
  
    Source_Citation:
      Citation_Information:
        Originator: Schlocker, J.
        Publication_Date:
        Title: unpublished geologic investigations
      Source_Scale_Denominator: 
      Type_Of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date:
        Source_Currentness_Reference:
      Source_Citation_Abbreviation:
      Source_Contribution: Source map for region 8 (see coverage ma-so or
                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
  
    Source_Citation:
      Citation_Information:
        Originator: Wahrhaftig, C.
        Publication_Date: 1984
        Title: Structure of the Marin Headlands block, California:  A progress
             report
          Series_Information:
            Series_Name: Pacific Section, SEPM
            Issue_Identification: 43
      Source_Scale_Denominator: 
      Type_Of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1984
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: Wahrhaftig, 1984
      Source_Contribution: Source map for region 8 (see coverage ma-so or
                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
  
    Source_Citation:
      Citation_Information:
        Originator: Wahrhaftig, C.
        Publication_Date: 1989
        Title:
      Source_Scale_Denominator: 
      Type_Of_Source_Media:
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date:
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                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
  
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        Publication_Date:
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        Publication_Date: 1969
        Title: Geology of a portion of western Marin County, California
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    Source_Citation:
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        Publication_Date: 1969
        Title: The landslides in the southeast part of Point Reyes National
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    Source_Citation:
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        Originator: Blake, M.C., Jr.
        Publication_Date:
        Title: unpublished geologic investigations
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    Source_Citation:
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        Publication_Date:
        Title: unpublished geologic investigations
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        Time_Period_Information:
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    Source_Citation:
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        Publication_Date: 1969
        Title: Geology of a portion of western Marin County, California
          Series_Information:
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      Source_Contribution: Source map for region 12 (see coverage ma-so or
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    Source_Citation:
      Citation_Information:
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        Originator: Blake, M.C., Jr.
        Publication_Date:
        Title: unpublished geologic investigations
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                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
  
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        Publication_Date: 1969
        Title: Geology of a portion of western Marin County, California
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    Source_Citation:
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        Originator: Blake, M.C., Jr.
        Publication_Date:
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            Ending_Date: 1971
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        Originator: Wolfe, E.W.
        Publication_Date: 1970
        Title: Map showing recently active breaks along the San Andreas fault
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        Originator: Blake, M.C., Jr.
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        Originator: Wright, R.H.
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        Publication_Date: 1914
        Title: San Francisco Folio
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            Issue_Identification: 193
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      Source_Contribution: Source map for region 17 (see coverage ma-so or
                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
  
    Source_Citation:
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        Originator: Blake, M.C., Jr.
        Originator: Wright, R.H.
        Publication_Date:
        Title: unpublished geologic investigations
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        Time_Period_Information:
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            Ending_Date: 1971
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                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
  
    Source_Citation:
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        Originator: Schlocker, J.
        Originator: Bonilla, M. G.
        Originator: Radbruch, D. H.
        Publication_Date: 1958
        Title: Geology of the San Francisco North quadrangle, California
          Series_Information:
            Series_Name: U.S. Geological Survey Miscellaneous Geologic
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            Issue_Identification: I-272
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                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
  
    Source_Citation:
      Citation_Information:
        Originator: Blake, M.C., Jr.
        Publication_Date:
        Title: unpublished geologic investigations
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            Calendar_Date: 1971
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                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
  
    Source_Citation:
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        Publication_Date:
        Title: unpublished geologic investigations
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        Publication_Date:
        Title: unpublished geologic investigations
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                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
  
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        Publication_Date:
        Title: unpublished geologic investigations
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    Source_Citation:
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        Originator: Brown, R.D.
        Originator: Wolfe, E.W.
        Publication_Date: 1970
        Title: Map showing recently active breaks along the San Andreas fault
             between Pt. Delgada and Bolinas Bay, California
          Series_Information:
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                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)  

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        Originator: Helley, E.J.
        Originator: Lajoie, K.R.
        Publication_Date:
        Title: unpublished geologic investigations
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        Title: Areal and engineering geology of the Oakland west quadrangle,
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            Series_Name: U.S. Geological Survey Miscellaneous Geologic 
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                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
  
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        Publication_Date:
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            Calendar_Date: 1971
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                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
  
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        Publication_Date: 1969
        Title: Geology of a portion of western Marin County, California
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        Originator: Wright, R.H.
        Publication_Date:
        Title: unpublished geologic investigations
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                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
  
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                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
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        Publication_Date: 1971
        Title: Preliminary geolgic map of the San Francisco South quadrangle and
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                         Sheet 2 plotfile maexpl.ps or maexpl.pdf)
  
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        Enumerated_Domain:
          Enumerated_Domain_Value:  Qoal?
          Enumerated_Domain_Value_Definition: Older alluvium, identification
                                              uncertain
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Qt
          Enumerated_Domain_Value_Definition: Marine and stream terrace deposits
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Qmi
          Enumerated_Domain_Value_Definition: Millerton Formation
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Qc
          Enumerated_Domain_Value_Definition: Colma Formation
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  QTm
          Enumerated_Domain_Value_Definition: Merced Formation
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Twg
          Enumerated_Domain_Value_Definition: Wilson Grove Formation
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Tps
          Enumerated_Domain_Value_Definition: Petaluma Formation, siltstone
                                              and claystone member
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Tpc
          Enumerated_Domain_Value_Definition: Petaluma Formation, gray claystone
                                              member
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Tsv
          Enumerated_Domain_Value_Definition: Sonoma Volcanics
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Tsr
          Enumerated_Domain_Value_Definition: Sonoma Volcanics, rhyolite lava
                                              flows
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Tsri
          Enumerated_Domain_Value_Definition: Sonoma Volcanics, rhyolite plugs
                                              and dikes
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Tsa
          Enumerated_Domain_Value_Definition: Sonoma Volcanics, andesite to
                                              basalt lava flows
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Tsa?
          Enumerated_Domain_Value_Definition: Sonoma Volcanics, andesite to
                                              basalt lava flows, identification
                                              uncertain
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Tst
          Enumerated_Domain_Value_Definition: Sonoma Volcanics, pumiceous ash
                                              flow tuff
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Ts
          Enumerated_Domain_Value_Definition: Unnamed sandstone
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Tm
          Enumerated_Domain_Value_Definition: Monterey shale
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Kfs
          Enumerated_Domain_Value_Definition: Franciscan complex, sandstone and
                                              shale
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Kfs?
          Enumerated_Domain_Value_Definition: Franciscan complex, sandstone and
                                              shale, identification uncertain
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Kfss
          Enumerated_Domain_Value_Definition: Franciscan complex, massive
                                              sandstone
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Kfsh
          Enumerated_Domain_Value_Definition: Franciscan complex, thin-bedded
                                              shale
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Kfl
          Enumerated_Domain_Value_Definition: Franciscan complex, limestone and
                                              chert
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Kfg
          Enumerated_Domain_Value_Definition: Franciscan complex, greenstone
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Kfch
          Enumerated_Domain_Value_Definition: Franciscan complex, chert
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Kfgwy
          Enumerated_Domain_Value_Definition: Franciscan complex, graywacke
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Kfdb
          Enumerated_Domain_Value_Definition: Franciscan complex, diabase
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  KJfm
          Enumerated_Domain_Value_Definition: Franciscan complex, meta-graywacke
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  KJfch
          Enumerated_Domain_Value_Definition: Franciscan complex, chert
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  KJfgc
          Enumerated_Domain_Value_Definition: Franciscan complex, greenstone and
                                              chert
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Jfg
          Enumerated_Domain_Value_Definition: Franciscan complex, greenstone
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Jfmgs
          Enumerated_Domain_Value_Definition: Franciscan complex,
                                              meta-greenstone
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value: Jfmch 
          Enumerated_Domain_Value_Definition: Franciscan complex, metachert
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Jfmgc
          Enumerated_Domain_Value_Definition: Franciscan complex, 
                                              meta-greenstone and metachert
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Jfgs
          Enumerated_Domain_Value_Definition: Franciscan complex, greenstone
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Jfmg
          Enumerated_Domain_Value_Definition: Franciscan complex, metamorphic
                                              rocks, gneissic
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Jspm
          Enumerated_Domain_Value_Definition: Franciscan complex, massive
                                              serpentinite
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  fsr
          Enumerated_Domain_Value_Definition: Franciscan complex, melange
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  KJgv
          Enumerated_Domain_Value_Definition: Great Valley complex, undivided
                                              sandstone, shale, and conglomerate
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Kgvn
          Enumerated_Domain_Value_Definition: Great Valley complex, Novato
                                              Conglomerate
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  KJgvs
          Enumerated_Domain_Value_Definition: Great Valley complex, sandstone
                                              and claystone
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  sp
          Enumerated_Domain_Value_Definition: Great Valley complex, serpentinite
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  sc
          Enumerated_Domain_Value_Definition: Great Valley complex, 
                                              silica-carbonate rock
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  water
          Enumerated_Domain_Value_Definition: water
          Enumerated_Domain_Value_Definition_Source: author

    Entity_Type:
      Entity_Type_Label:  MA-GEOL.AAT
      Entity_Type_Definition:  arc attribute table
      Entity_Type_Definition_Source:  ARC/INFO
    Attribute:
      Attribute_Label:  -
      Attribute_Definition:  arc attribute table
      Attribute_Definition_Source:  ARC/INFO
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  -
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  FNODE#
      Attribute_Definition:  Internal number of from-node
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  TNODE#
      Attribute_Definition:  Internal number of to-node
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  LPOLY#
      Attribute_Definition:  Internal number of poly to left of arc
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  RPOLY#
      Attribute_Definition:  Internal number of poly to right of arc
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  LENGTH
      Attribute_Definition:  Length of arc in coverage units
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Positive real numbers
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  MA-GEOL#
      Attribute_Definition:  Internal feature number
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  MA-GEOL-ID
      Attribute_Definition:  User-assigned feature number
      Attribute_Definition_Source:  User-defined
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Integer
          Enumerated_Domain_Value_Definition: Calculated to equal MA_GEOL#
          Enumerated_Domain_Value_Definition_Source: author
    Attribute:
      Attribute_Label:  LTYPE
      Attribute_Definition:  The type of lines used in the geology layer.
          Includes all faults, as well as lines bounding polygons that define
          geologic units.
      Attribute_Definition_Source:  author
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  contact, approx. located 
          Enumerated_Domain_Value_Definition:  Boundary between two mapped units
             that retains the original depositional or intrusive relationship
             (i.e. not faulted).  The contact has not been observed, so it is
             not well-located as described in Positional_Accuracy, but the 
             location is constrained to be within about 2 mm at map scale
             (1:62,500) or within about 125 meters on the ground.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  contact, certain
          Enumerated_Domain_Value_Definition:  Boundary between two mapped units
             that retains the original depositional or intrusive relationship
             (i.e. not faulted).  The contact has been observed, so it is
             well-located as described in Positional_Accuracy.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  contact, concealed
          Enumerated_Domain_Value_Definition:  Boundary between two mapped units
             that retains the original depositional or intrusive relationship
             (i.e. not faulted).  The contact is obscured by overlying mapped
             units, so it is not well-located as described in
             Positional_Accuracy, but the location is constrained to be within
             about 2 mm at map scale (1:62,500) or within about 125 meters on
             the ground.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  contact, uncertain
          Enumerated_Domain_Value_Definition:  Boundary between two mapped units
             that retains the original depositional or intrusive relationship
             (i.e. not faulted).  The contact has not been observed, so it is
             not well-located as described in Positional_Accuracy, but the 
             location is constrained to be within about 10 mm at map scale
             (1:62,500) or within about 625 meters on the ground.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  fault, active
          Enumerated_Domain_Value_Definition: Structural boundary between
             mapped units or structural discontinuity within a mapped unit
             that has experienced and continues to experience relative offset
             between the rock bodies on either side of the fault. The fault
             has been observed, so it is well-located as described in
             Positional_Accuracy.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  fault, active, approx. located
          Enumerated_Domain_Value_Definition: Structural boundary between
             mapped units or structural discontinuity within a mapped unit
             that has experienced and continues to experience relative offset
             between the rock bodies on either side of the fault. The contact
             has not been observed, so it is not well-located as described in
             Positional_Accuracy, but the location is constrained to be within
             about 2 mm at map scale (1:62,500) or within about 125 meters on
             the ground.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  fault, approx. located
          Enumerated_Domain_Value_Definition:: Structural boundary between
             mapped units or structural discontinuity within a mapped unit
             that has experienced relative offset between the rock bodies on
             either side of the fault. The contact has not been observed, so it
             is not well-located as described in Positional_Accuracy, but the
             location is constrained to be within about 2 mm at map scale
             (1:62,500) or within about 125 meters on the ground.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  fault, certain
          Enumerated_Domain_Value_Definition: Structural boundary between
             mapped units or structural discontinuity within a mapped unit
             that has experienced relative offset between the rock bodies on
             either side of the fault. The fault has been observed, so it is
             well-located as described in Positional_Accuracy.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  fault, concealed
          Enumerated_Domain_Value_Definition: Structural boundary between
             mapped units or structural discontinuity within a mapped unit
             that has experienced relative offset between the rock bodies on
             either side of the fault. The fault is obscured by overlying
             mapped units, so it is not well-located as described in
             Positional_Accuracy, but the location is constrained to be within
             about 10 mm at map scale (1:62,500) or within about 625 meters on
             the ground.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  fault, inferred, queried
          Enumerated_Domain_Value_Definition: Structural boundary between
             mapped units or structural discontinuity within a mapped unit
             that has experienced relative offset between the rock bodies on
             either side of the fault. The fault has not been observed, so it
             is not well-located as described in Positional_Accuracy, but the
             location is constrained to be within about 10 mm at map scale
             (1:62,500) or within about 625 meters on the ground.  The existence
             of the fault is inferred from structural and stratigraphic
             relationships observed elsewhere.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  fault, uncertain
          Enumerated_Domain_Value_Definition: Structural boundary between
             mapped units or structural discontinuity within a mapped unit
             that has experienced relative offset between the rock bodies on
             either side of the fault. The fault has not been observed, so it
             is not well-located as described in Positional_Accuracy, but the
             location is constrained to be within about 10 mm at map scale
             (1:62,500) or within about 625 meters on the ground.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  map boundary,
          Enumerated_Domain_Value_Definition: Edge of the mapped area.  Used
              primarily to bound polygons at the edge of the map database.
              The location of the boundary is well located as described in
              Positional_Accuracy
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  normal fault, approx. located
          Enumerated_Domain_Value_Definition: Structural boundary between
             mapped units or structural discontinuity within a mapped unit
             that has experienced normal offset between the rock bodies on
             either side of the fault. The contact has not been observed, so it
             is not well-located as described in Positional_Accuracy, but the
             location is constrained to be within about 2 mm at map scale
             (1:62,500) or within about 125 meters on the ground.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  normal fault, certain
          Enumerated_Domain_Value_Definition: Structural boundary between
             mapped units or structural discontinuity within a mapped unit
             that has experienced normal offset between the rock bodies on
             either side of the fault. The fault has been observed, so it is
             well-located as described in Positional_Accuracy.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  normal fault, concealed
          Enumerated_Domain_Value_Definition: Structural boundary between
             mapped units or structural discontinuity within a mapped unit
             that has experienced normal offset between the rock bodies on
             either side of the fault. The fault is obscured by overlying
             mapped units, so it is not well-located as described in
             Positional_Accuracy, but the location is constrained to be within
             about 10 mm at map scale (1:62,500) or within about 625 meters on
             the ground.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  normal fault, uncertain
          Enumerated_Domain_Value_Definition: Structural boundary between
             mapped units or structural discontinuity within a mapped unit
             that has experienced normal offset between the rock bodies on
             either side of the fault. The fault has not been observed, so it
             is not well-located as described in Positional_Accuracy, but the
             location is constrained to be within about 10 mm at map scale
             (1:62,500) or within about 625 meters on the ground.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  scratch boundary,
          Enumerated_Domain_Value_Definition: An arbitrary line with no geologic
              significance.  Used primarily to divide polygons that would 
              otherwise have more vertices than allowed by Arc/Info.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  scratch boundary, certain
          Enumerated_Domain_Value_Definition: An arbitrary line with no geologic
              significance.  Used primarily to divide polygons that would 
              otherwise have more vertices than allowed by Arc/Info.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  thrust fault, approx. located
          Enumerated_Domain_Value_Definition: Structural boundary between
             mapped units or structural discontinuity within a mapped unit
             that has experienced thrust offset between the rock bodies on
             either side of the fault. The contact has not been observed, so it
             is not well-located as described in Positional_Accuracy, but the
             location is constrained to be within about 2 mm at map scale
             (1:62,500) or within about 125 meters on the ground.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  thrust fault, certain
          Enumerated_Domain_Value_Definition: Structural boundary between
             mapped units or structural discontinuity within a mapped unit
             that has experienced thrust offset between the rock bodies on
             either side of the fault. The fault has been observed, so it is
             well-located as described in Positional_Accuracy.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  thrust fault, concealed
          Enumerated_Domain_Value_Definition: Structural boundary between
             mapped units or structural discontinuity within a mapped unit
             that has experienced thrust offset between the rock bodies on
             either side of the fault. The fault is obscured by overlying
             mapped units, so it is not well-located as described in
             Positional_Accuracy, but the location is constrained to be within
             about 10 mm at map scale (1:62,500) or within about 625 meters on
             the ground.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  thrust fault, concealed, queried
          Enumerated_Domain_Value_Definition: Structural boundary between
             mapped units or structural discontinuity within a mapped unit
             that has experienced thrust offset between the rock bodies on
             either side of the fault. The fault is obscured by overlying
             mapped units, so it is not well-located as described in
             Positional_Accuracy, but the location is constrained to be within
             about 10 mm at map scale (1:62,500) or within about 625 meters on
             the ground.  The existence of this fault has been inferred from
             probable stratigraphic and structural relationships observed
             at a regional scale.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  thrust fault, inferred
          Enumerated_Domain_Value_Definition: Structural boundary between
             mapped units or structural discontinuity within a mapped unit
             that has experienced thrust offset between the rock bodies on
             either side of the fault. The fault has not been observed, so it
             is not well-located as described in Positional_Accuracy, but the
             location is constrained to be within about 10 mm at map scale
             (1:62,500) or within about 625 meters on the ground.  The existence
             of the fault is inferred from structural and stratigraphic
             relationships observed elsewhere.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  thrust fault, inferred, queried
          Enumerated_Domain_Value_Definition: Structural boundary between
             mapped units or structural discontinuity within a mapped unit
             that has experienced thrust offset between the rock bodies on
             either side of the fault. The fault has not been observed, so it
             is not well-located as described in Positional_Accuracy, but the
             location is constrained to be within about 10 mm at map scale
             (1:62,500) or within about 625 meters on the ground.  The existence
             of this fault has been inferred from probable stratigraphic and
             structural relationships observed at a regional scale.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  thrust fault, uncertain
          Enumerated_Domain_Value_Definition: Structural boundary between
             mapped units or structural discontinuity within a mapped unit
             that has experienced thrust offset between the rock bodies on
             either side of the fault. The fault has not been observed, so it
             is not well-located as described in Positional_Accuracy, but the
             location is constrained to be within about 10 mm at map scale
             (1:62,500) or within about 625 meters on the ground.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  water boundary
          Enumerated_Domain_Value_Definition: The edge of a mapped body of
             water.  This line is derived from the base map, and therefore is
             well-located as described in Positional_Accuracy.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  water boundary,
          Enumerated_Domain_Value_Definition: The edge of a mapped body of
             water.  This line is derived from the base map, and therefore is
             well-located as described in Positional_Accuracy.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  water boundary, certain
          Enumerated_Domain_Value_Definition: The edge of a mapped body of
             water.  This line is derived from the base map, and therefore is
             well-located as described in Positional_Accuracy.
          Enumerated_Domain_Value_Definition_Source: author

 Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  MA-STRC.PAT
      Entity_Type_Definition:  Attribute table of MA-STRC.
      Entity_Type_Definition_Source:  ARC/INFO
    Attribute:
      Attribute_Label:  -
      Attribute_Definition:  Attribute table of MA-STRC.
      Attribute_Definition_Source:  ARC/INFO
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  -
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  AREA
      Attribute_Definition:  Degenerate area of point
      Attribute_Definition_Source:  Assigned
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  0
          Enumerated_Domain_Value_Definition: Not used for point data
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  PERIMETER
      Attribute_Definition:  Degenerate perimeter of point
      Attribute_Definition_Source:  Assigned
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  0
          Enumerated_Domain_Value_Definition: Not used for point data
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  MA-STRC#
      Attribute_Definition:  Internal feature number
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  MA-STRC-ID
      Attribute_Definition:  User-assigned feature number
      Attribute_Definition_Source:  User-defined
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Integer
          Enumerated_Domain_Value_Definition: Calculated to equal MA-STRC#
          Enumerated_Domain_Value_Definition_Source: author
    Attribute:
      Attribute_Label:  PTTYPE
      Attribute_Definition:  The type of planar feature which was observed
          and the orientation of which was measured at this point.
      Attribute_Definition_Source: author  
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  approx bedding
          Enumerated_Domain_Value_Definition: Originally horizontal sedimentary
            layers were observed at this point.  Because of poor exposure,
            weathering, indistinct layering, or some other factor, only the
            approximate orientation of the layers was measured.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  bedding
          Enumerated_Domain_Value_Definition: Originally horizontal sedimentary
            layers were observed at this point.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  bedding w/tops
          Enumerated_Domain_Value_Definition: Originally horizontal sedimentary
            layers were observed at this point.  In addition, a geopedal
            indicator was observed that showed the beds were upright.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  fault dip
          Enumerated_Domain_Value_Definition: A fault plane or other evidence
             of the orientation of a fault plane was observed at this point.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  foliation
          Enumerated_Domain_Value_Definition: Metamorphic foliation was 
             observed at this point.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  ot bedding
          Enumerated_Domain_Value_Definition: Originally horizontal sedimentary
            layers were observed at this point.  Evidence that the beds are
            overturned was observed, although that observation may not have
            been made at this point.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  pillow lava
          Enumerated_Domain_Value_Definition: Originally sub-horizontal lobate
            structures formed in sub-aqueous lava flows were observed at this
            point.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  vert bedding
          Enumerated_Domain_Value_Definition: Originally horizontal sedimentary
            layers were observed at this point.  These layers are now vertical.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  vert foliation
          Enumerated_Domain_Value_Definition: Vertical metamorphic foliation was
             observed at this point.
          Enumerated_Domain_Value_Definition_Source: author
    Attribute:
      Attribute_Label:  DIP
      Attribute_Definition:  The inclination of planar structures measured in
          degrees down from horizontal.
      Attribute_Definition_Source:  author
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 90
      Attribute_Units_of_Measure: degrees
      Attribute_Measurement_Resolution: 1
    Attribute:
      Attribute_Label:  STRIKE
      Attribute_Definition:  The orientation of a horizontal line in an inclined
           planar structure measured in degrees clockwise from north.
      Attribute_Definition_Source:  author
      Attribute_Domain_Values:
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 359
      Attribute_Units_of_Measure: degrees
      Attribute_Measurement_Resolution: 1
    Entity_Type:
      Entity_Type_Label:  MA-STRC.AAT
      Entity_Type_Definition:  Attribute table of MA-STRC.
      Entity_Type_Definition_Source:  ARC/INFO
    Attribute:
      Attribute_Label:  -
      Attribute_Definition:  Attribute table of MA-STRC.
      Attribute_Definition_Source:  ARC/INFO
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  -
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  FNODE#
      Attribute_Definition:  Internal number of from-node
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  TNODE#
      Attribute_Definition:  Internal number of to-node
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  LPOLY#
      Attribute_Definition:  Internal number of poly to left of arc
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  RPOLY#
      Attribute_Definition:  Internal number of poly to right of arc
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  LENGTH
      Attribute_Definition:  Length of arc in coverage units
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Positive real numbers
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  MA-STRC#
      Attribute_Definition:  Internal feature number
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  MA-STRC-ID
      Attribute_Definition:  User-assigned feature number
      Attribute_Definition_Source:  User-defined
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Integer
          Enumerated_Domain_Value_Definition: Calculated to equal MA-STRC#
          Enumerated_Domain_Value_Definition_Source: author
    Attribute:
      Attribute_Label:  LTYPE
      Attribute_Definition:  The type of fold axis or other structural linear
          feature that does not bound geologic units.  Faults and contacts
          are described in a seperate coverage.
      Attribute_Definition_Source:  author
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  
          Enumerated_Domain_Value_Definition: No features of this type were
                                              recorded in this report
          Enumerated_Domain_Value_Definition_Source: author

 Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  MA-BLKS.PAT
      Entity_Type_Definition:  Attribute table of MA-BLKS.
      Entity_Type_Definition_Source:  ARC/INFO
    Attribute:
      Attribute_Label:  -
      Attribute_Definition:  Attribute table of MA-BLKS.
      Attribute_Definition_Source:  ARC/INFO
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  -
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  AREA
      Attribute_Definition:  Degenerate area of point
      Attribute_Definition_Source:  Assigned
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  0
          Enumerated_Domain_Value_Definition: Not used for point data
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  PERIMETER
      Attribute_Definition:  Degenerate perimeter of point
      Attribute_Definition_Source:  Assigned
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  0
          Enumerated_Domain_Value_Definition: Not used for point data
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  MA-BLKS#
      Attribute_Definition:  Internal feature number
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  MA-BLKS-ID
      Attribute_Definition:  User-assigned feature number
      Attribute_Definition_Source:  User-defined
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Integer
          Enumerated_Domain_Value_Definition: Calculated equal to MA_BLKS#
          Enumerated_Domain_Value_Definition_Source: author
    Attribute:
      Attribute_Label:  PTTYPE
      Attribute_Definition:  Type of melange block observed at this point
      Attribute_Definition_Source:  author
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  blk.h
          Enumerated_Domain_Value_Definition: High-grade metamorphic block
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  blk.l
          Enumerated_Domain_Value_Definition: Low-grade metamorphic block
          Enumerated_Domain_Value_Definition_Source: author
    Attribute:
      Attribute_Label:  BKTYPE
      Attribute_Definition:  More detailed information about the type of melange
                             block observed at this point.
      Attribute_Definition_Source:  author
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: c 
          Enumerated_Domain_Value_Definition: Chert (KJfch)
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value: g
          Enumerated_Domain_Value_Definition: Greenstone (Jfgs)
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value: h 
          Enumerated_Domain_Value_Definition: Gneissic metamorphic rocks (Jfmg)
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value: n 
          Enumerated_Domain_Value_Definition: Silica-carbonate rock (sc)
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value: p 
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value: r 
          Enumerated_Domain_Value_Definition: Metachert (Jfmch)
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value: s 
          Enumerated_Domain_Value_Definition: Serpentinite (sp)
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value: u 
          Enumerated_Domain_Value_Definition: Meta-greenstone (Jfmgs)
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value: w 
          Enumerated_Domain_Value_Definition: Graywacke (Jfgwy)
          Enumerated_Domain_Value_Definition_Source: author

 Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  MA-ALTR.PAT
      Entity_Type_Definition:  Attribute table of MA-ALTR.
      Entity_Type_Definition_Source:  ARC/INFO
    Attribute:
      Attribute_Label:  -
      Attribute_Definition:  Attribute table of MA-ALTR.
      Attribute_Definition_Source:  ARC/INFO
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  -
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  AREA
      Attribute_Definition:  Area of poly/region in square coverage units
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Positive real numbers
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  PERIMETER
      Attribute_Definition:  Perimeter of poly/region in coverage units
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Positive real numbers
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  MA-ALTR#
      Attribute_Definition:  Internal feature number
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  MA-ALTR-ID
      Attribute_Definition:  User-assigned feature number
      Attribute_Definition_Source:  User-defined
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Integer
          Enumerated_Domain_Value_Definition: Calculated equal to MA-ALTR#
          Enumerated_Domain_Value_Definition_Source: author
    Attribute:
      Attribute_Label:  PTYPE
      Attribute_Definition:  Designates areas of hydrothermal alteration
      Attribute_Definition_Source:  author
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  ha
          Enumerated_Domain_Value_Definition: Hydrothermal alteration was
                                              observed in this area
          Enumerated_Domain_Value_Definition_Source: author
    Entity_Type:
      Entity_Type_Label:  MA-ALTR.AAT
      Entity_Type_Definition:  Attribute table of MA-ALTR.
      Entity_Type_Definition_Source:  ARC/INFO
    Attribute:
      Attribute_Label:  -
      Attribute_Definition:  Attribute table of MA-ALTR.
      Attribute_Definition_Source:  ARC/INFO
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  -
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  FNODE#
      Attribute_Definition:  Internal number of from-node
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  TNODE#
      Attribute_Definition:  Internal number of to-node
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  LPOLY#
      Attribute_Definition:  Internal number of poly to left of arc
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  RPOLY#
      Attribute_Definition:  Internal number of poly to right of arc
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  LENGTH
      Attribute_Definition:  Length of arc in coverage units
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Positive real numbers
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  MA-ALTR#
      Attribute_Definition:  Internal feature number
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  MA-ALTR-ID
      Attribute_Definition:  User-assigned feature number
      Attribute_Definition_Source:  User-defined
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Integer
          Enumerated_Domain_Value_Definition: Calculated equal to MA-ALTR#
          Enumerated_Domain_Value_Definition_Source: author
    Attribute:
      Attribute_Label:  LTYPE
      Attribute_Definition:  
      Attribute_Definition_Source:  
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  scratch boundary,
          Enumerated_Domain_Value_Definition: The edge of mapped areas of
             hydrothermal alteration.  This boundary is not well-located as
             described in Attribute_Accuracy, but the location is constrained to
             be within about 2 mm at map scale (1:62,500) or within about 125
             meters on the ground.  The contact is gradational. 
          Enumerated_Domain_Value_Definition_Source: author

 Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  MA-QUAD.PAT
      Entity_Type_Definition:  Attribute table of MA-QUAD.
      Entity_Type_Definition_Source:  ARC/INFO
    Attribute:
      Attribute_Label:  -
      Attribute_Definition:  Attribute table of MA-QUAD.
      Attribute_Definition_Source:  ARC/INFO
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  -
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  AREA
      Attribute_Definition:  Area of poly/region in square coverage units
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Positive real numbers
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  PERIMETER
      Attribute_Definition:  Perimeter of poly/region in coverage units
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Positive real numbers
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  MA-QUAD#
      Attribute_Definition:  Internal feature number
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  MA-QUAD-ID
      Attribute_Definition:  User-assigned feature number
      Attribute_Definition_Source:  User-defined
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Integer
          Enumerated_Domain_Value_Definition: Calculated equal to MA-QUAD#
          Enumerated_Domain_Value_Definition_Source: author
    Attribute:
      Attribute_Label:  PTYPE
      Attribute_Definition:  Used to delineate areas of water in the mapped area
      Attribute_Definition_Source:  author
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  water
          Enumerated_Domain_Value_Definition: Areas of water in the mapped area
          Enumerated_Domain_Value_Definition_Source: author
    Entity_Type:
      Entity_Type_Label:  MA-QUAD.AAT
      Entity_Type_Definition:  Attribute table of MA-QUAD.
      Entity_Type_Definition_Source:  ARC/INFO
    Attribute:
      Attribute_Label:  -
      Attribute_Definition:  Attribute table of MA-QUAD.
      Attribute_Definition_Source:  ARC/INFO
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  -
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  FNODE#
      Attribute_Definition:  Internal number of from-node
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  TNODE#
      Attribute_Definition:  Internal number of to-node
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  LPOLY#
      Attribute_Definition:  Internal number of poly to left of arc
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  RPOLY#
      Attribute_Definition:  Internal number of poly to right of arc
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  LENGTH
      Attribute_Definition:  Length of arc in coverage units
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Positive real numbers
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  MA-QUAD#
      Attribute_Definition:  Internal feature number
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  MA-QUAD-ID
      Attribute_Definition:  User-assigned feature number
      Attribute_Definition_Source:  User-defined
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Integer
          Enumerated_Domain_Value_Definition: Calculated equal to MA-QUAD#
          Enumerated_Domain_Value_Definition_Source: author
    Attribute:
      Attribute_Label:  LTYPE
      Attribute_Definition:  Type of line recorded in the quadrangle index
                             coverage.
      Attribute_Definition_Source:  author
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  map boundary
          Enumerated_Domain_Value_Definition: Edge of the mapped area. 
              The location of the boundary is well located as described in
              Positional_Accuracy     
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  map boundary,
          Enumerated_Domain_Value_Definition: Edge of the mapped area. 
              The location of the boundary is well located as described in
              Positional_Accuracy
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  quad,
          Enumerated_Domain_Value_Definition: Edge of a USGS 7.5 minute 
             quadrangle in the map area.  This line is derived from a
             7.5 minute grid generated from latitude and longitude values
             and therefore should be precisely located.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  water boundary
          Enumerated_Domain_Value_Definition:  The edge of a mapped body of
             water.  This line is derived from the base map, and therefore is
             well-located as described in Positional_Accuracy.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  water boundary,
          Enumerated_Domain_Value_Definition: The edge of a mapped body of
             water.  This line is derived from the base map, and therefore is
             well-located as described in Positional_Accuracy.
          Enumerated_Domain_Value_Definition_Source: author
Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  MA-CORR.PAT
      Entity_Type_Definition:  Attribute table of MA-CORR.
      Entity_Type_Definition_Source:  ARC/INFO
    Attribute:
      Attribute_Label:  -
      Attribute_Definition:  Attribute table of MA-CORR.
      Attribute_Definition_Source:  ARC/INFO
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  -
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  AREA
      Attribute_Definition:  Area of poly/region in square coverage units
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Positive real numbers
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  PERIMETER
      Attribute_Definition:  Perimeter of poly/region in coverage units
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Positive real numbers
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  MA-CORR#
      Attribute_Definition:  Internal feature number
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  MA-CORR-ID
      Attribute_Definition:  User-assigned feature number
      Attribute_Definition_Source:  User-defined
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  PTYPE
      Attribute_Definition:  Labels of geologic units and areas of water.
      Attribute_Definition_Source:  author
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Qaf
          Enumerated_Domain_Value_Definition: Artificial fill
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Qmf
          Enumerated_Domain_Value_Definition: Artificial fill over marine
                                              and marsh deposits
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Qs
          Enumerated_Domain_Value_Definition: Beach sand
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Qd
          Enumerated_Domain_Value_Definition: Dune sand
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Qm
          Enumerated_Domain_Value_Definition: Marine and marsh deposits
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Qls
          Enumerated_Domain_Value_Definition: Landslide deposits
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Qal
          Enumerated_Domain_Value_Definition: Alluvium
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Qsr
          Enumerated_Domain_Value_Definition: Slope debris and ravine fill
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Qu
          Enumerated_Domain_Value_Definition: Undifferentiated surficial
                                              deposits
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Qr
          Enumerated_Domain_Value_Definition: Volcanic gravel
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Qob
          Enumerated_Domain_Value_Definition: Older beach deposits
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Qoal
          Enumerated_Domain_Value_Definition: Older alluvium
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Qt
          Enumerated_Domain_Value_Definition: Marine and stream terrace deposits
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Qmi
          Enumerated_Domain_Value_Definition: Millerton Formation
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Qc
          Enumerated_Domain_Value_Definition: Colma Formation
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  QTm
          Enumerated_Domain_Value_Definition: Merced Formation
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Twg
          Enumerated_Domain_Value_Definition: Wilson Grove Formation
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Tps
          Enumerated_Domain_Value_Definition: Petaluma Formation, siltstone
                                              and claystone member
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Tpc
          Enumerated_Domain_Value_Definition: Petaluma Formation, gray claystone
                                              member
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Tsv
          Enumerated_Domain_Value_Definition: Sonoma Volcanics
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Tsr
          Enumerated_Domain_Value_Definition: Sonoma Volcanics, rhyolite lava
                                              flows
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Tsri
          Enumerated_Domain_Value_Definition: Sonoma Volcanics, rhyolite plugs
                                              and dikes
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Tsa
          Enumerated_Domain_Value_Definition: Sonoma Volcanics, andesite to
                                              basalt lava flows
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Tst
          Enumerated_Domain_Value_Definition: Sonoma Volcanics, pumiceous ash
                                              flow tuff
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Ts
          Enumerated_Domain_Value_Definition: Unnamed sandstone
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Tm
          Enumerated_Domain_Value_Definition: Monterey shale
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Kfs
          Enumerated_Domain_Value_Definition: Franciscan complex, sandstone and
                                              shale
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Kfss
          Enumerated_Domain_Value_Definition: Franciscan complex, massive
                                              sandstone
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Kfsh
          Enumerated_Domain_Value_Definition: Franciscan complex, thin-bedded
                                              shale
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Kfl
          Enumerated_Domain_Value_Definition: Franciscan complex, limestone and
                                              chert
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Kfg
          Enumerated_Domain_Value_Definition: Franciscan complex, greenstone
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Kfch
          Enumerated_Domain_Value_Definition: Franciscan complex, chert
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Kfgwy
          Enumerated_Domain_Value_Definition: Franciscan complex, graywacke
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Kfdb
          Enumerated_Domain_Value_Definition: Franciscan complex, diabase
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  KJfm
          Enumerated_Domain_Value_Definition: Franciscan complex, meta-graywacke
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  KJfch
          Enumerated_Domain_Value_Definition: Franciscan complex, chert
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  KJfgc
          Enumerated_Domain_Value_Definition: Franciscan complex, greenstone and
                                              chert
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Jfg
          Enumerated_Domain_Value_Definition: Franciscan complex, greenstone
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Jfmgs
          Enumerated_Domain_Value_Definition: Franciscan complex,
                                              meta-greenstone
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value: Jfmch 
          Enumerated_Domain_Value_Definition: Franciscan complex, metachert
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Jfmgc
          Enumerated_Domain_Value_Definition: Franciscan complex, 
                                              meta-greenstone and metachert
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Jfgs
          Enumerated_Domain_Value_Definition: Franciscan complex, greenstone
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Jfmg
          Enumerated_Domain_Value_Definition: Franciscan complex, metamorphic
                                              rocks, gneissic
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Jspm
          Enumerated_Domain_Value_Definition: Franciscan complex, massive
                                              serpentinite
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  fsr
          Enumerated_Domain_Value_Definition: Franciscan complex, melange
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  KJgv
          Enumerated_Domain_Value_Definition: Great Valley complex, undivided
                                              sandstone, shale, and conglomerate
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Kgvn
          Enumerated_Domain_Value_Definition: Great Valley complex, Novato
                                              Conglomerate
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  KJgvs
          Enumerated_Domain_Value_Definition: Great Valley complex, sandstone
                                              and claystone
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  sp
          Enumerated_Domain_Value_Definition: Great Valley complex, serpentinite
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  sc
          Enumerated_Domain_Value_Definition: Great Valley complex, 
                                              silica-carbonate rock
          Enumerated_Domain_Value_Definition_Source: author
    Entity_Type:
      Entity_Type_Label:  MA-CORR.AAT
      Entity_Type_Definition:  Attribute table of MA-CORR.
      Entity_Type_Definition_Source:  ARC/INFO
    Attribute:
      Attribute_Label:  -
      Attribute_Definition:  Attribute table of MA-CORR.
      Attribute_Definition_Source:  ARC/INFO
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  -
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  FNODE#
      Attribute_Definition:  Internal number of from-node
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  TNODE#
      Attribute_Definition:  Internal number of to-node
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  LPOLY#
      Attribute_Definition:  Internal number of poly to left of arc
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  RPOLY#
      Attribute_Definition:  Internal number of poly to right of arc
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  LENGTH
      Attribute_Definition:  Length of arc in coverage units
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Positive real numbers
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  MA-CORR#
      Attribute_Definition:  Internal feature number
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  MA-CORR-ID
      Attribute_Definition:  User-assigned feature number
      Attribute_Definition_Source:  User-defined
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  LTYPE
      Attribute_Definition:  Type of line used in the correlation chart
      Attribute_Definition_Source:  author
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  box
          Enumerated_Domain_Value_Definition: Edge of a box in the correlation
                                              chart
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  box,
          Enumerated_Domain_Value_Definition: Edge of a box in the correlation
                                              chart
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  brack,
          Enumerated_Domain_Value_Definition: Bracket line in the correlation
                                              chart
          Enumerated_Domain_Value_Definition_Source: author

Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  MA-SO.PAT
      Entity_Type_Definition:  Attribute table of MA-SO.
      Entity_Type_Definition_Source:  ARC/INFO
    Attribute:
      Attribute_Label:  -
      Attribute_Definition:  Attribute table of MA-SO.
      Attribute_Definition_Source:  ARC/INFO
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  -
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  AREA
      Attribute_Definition:  Area of poly/region in square coverage units
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Positive real numbers
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  PERIMETER
      Attribute_Definition:  Perimeter of poly/region in coverage units
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Positive real numbers
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  MA-SO#
      Attribute_Definition:  Internal feature number
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  MA-SO-ID
      Attribute_Definition:  User-assigned feature number
      Attribute_Definition_Source:  User-defined
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Integer
          Enumerated_Domain_Value_Definition: Calculated equal to MA-SO#
          Enumerated_Domain_Value_Definition_Source: author
    Attribute:
      Attribute_Label:  PTYPE
      Attribute_Definition:  The index number of the area labeled that relates
          to the sources of data as shown in the explanation sheet plotfile
          (maexpl.ps or maexpl.pdf) or in Lineage:Source Information: above.
      Attribute_Definition_Source:  author
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  1
          Enumerated_Domain_Value_Definition: Source region 1
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  10
          Enumerated_Domain_Value_Definition: Source region 10
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  11
          Enumerated_Domain_Value_Definition: Source region 11
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  12
          Enumerated_Domain_Value_Definition: Source region 12
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  13
          Enumerated_Domain_Value_Definition: Source region 13
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  14
          Enumerated_Domain_Value_Definition: Source region 14
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  15
          Enumerated_Domain_Value_Definition: Source region 15
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  16
          Enumerated_Domain_Value_Definition: Source region 16
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  17
          Enumerated_Domain_Value_Definition: Source region 17
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  18
          Enumerated_Domain_Value_Definition: Source region 18
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  19
          Enumerated_Domain_Value_Definition: Source region 19
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  2
          Enumerated_Domain_Value_Definition: Source region 2
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  20
          Enumerated_Domain_Value_Definition: Source region 20
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  21
          Enumerated_Domain_Value_Definition: Source region 21
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  22
          Enumerated_Domain_Value_Definition: Source region 22
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  3
          Enumerated_Domain_Value_Definition: Source region 3
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  4
          Enumerated_Domain_Value_Definition: Source region 4
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  5
          Enumerated_Domain_Value_Definition: Source region 5
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  5a
          Enumerated_Domain_Value_Definition: Source region 5a
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  6
          Enumerated_Domain_Value_Definition: Source region 6
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  7
          Enumerated_Domain_Value_Definition: Source region 7
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  8
          Enumerated_Domain_Value_Definition: Source region 8
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  9
          Enumerated_Domain_Value_Definition: Source region 9
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  9&14
          Enumerated_Domain_Value_Definition: Sources from both region 9 and 14
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  water
          Enumerated_Domain_Value_Definition: Region of open water with no
                                              mapped geology.
          Enumerated_Domain_Value_Definition_Source: author
    Entity_Type:
      Entity_Type_Label:  MA-SO.AAT
      Entity_Type_Definition:  Attribute table of MA-SO.
      Entity_Type_Definition_Source:  ARC/INFO
    Attribute:
      Attribute_Label:  -
      Attribute_Definition:  Attribute table of MA-SO.
      Attribute_Definition_Source:  ARC/INFO
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  -
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  FNODE#
      Attribute_Definition:  Internal number of from-node
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  TNODE#
      Attribute_Definition:  Internal number of to-node
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  LPOLY#
      Attribute_Definition:  Internal number of poly to left of arc
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  RPOLY#
      Attribute_Definition:  Internal number of poly to right of arc
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  LENGTH
      Attribute_Definition:  Length of arc in coverage units
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Positive real numbers
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  MA-SO#
      Attribute_Definition:  Internal feature number
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  MA-SO-ID
      Attribute_Definition:  User-assigned feature number
      Attribute_Definition_Source:  User-defined
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Integer
          Enumerated_Domain_Value_Definition: Calculated equal to MA-SO#
          Enumerated_Domain_Value_Definition_Source: author
    Attribute:
      Attribute_Label:  LTYPE
      Attribute_Definition:  Type of line used in the Sources of Data Index
                             Map coverage
      Attribute_Definition_Source:  author
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  county, boundary
          Enumerated_Domain_Value_Definition: The boundary between counties
             in the index map area.  This line is not well-located as described
             in Positional_Accuracy, and is included for general reference only.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  leader
          Enumerated_Domain_Value_Definition: A line included for plotting 
             purposes only to allow the labeling of some small areas.  This 
             line is not well-located as described in Positional_Accuracy, and
             is included for general reference only.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  map boundary,
          Enumerated_Domain_Value_Definition: The edge of the index map area.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  source, boundary
          Enumerated_Domain_Value_Definition: The boundary between regions 
             within which different sources of data were used to supplement
             new mapping by the authors.  The sources are delineated in
             Source_Information as well as Sheet 2 plotfiles maexpl.ps and
             maexpl.pdf.  This line is not well-located as described
             in Positional_Accuracy, and is included for general reference only.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  water boundary,
          Enumerated_Domain_Value_Definition:  The edge of a mapped body of
             water.  This line is not well-located as described in
             Positional_Accuracy, and is included for general reference only.
          Enumerated_Domain_Value_Definition_Source: author

Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  MA-TERR.PAT
      Entity_Type_Definition:  Attribute table of MA-TERR.
      Entity_Type_Definition_Source:  ARC/INFO
    Attribute:
      Attribute_Label:  -
      Attribute_Definition:  Attribute table of MA-TERR.
      Attribute_Definition_Source:  ARC/INFO
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  -
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  AREA
      Attribute_Definition:  Area of poly/region in square coverage units
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Positive real numbers
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  PERIMETER
      Attribute_Definition:  Perimeter of poly/region in coverage units
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Positive real numbers
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  MA-TERR#
      Attribute_Definition:  Internal feature number
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  MA-TERR-ID
      Attribute_Definition:  User-assigned feature number
      Attribute_Definition_Source:  User-defined
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Integer
          Enumerated_Domain_Value_Definition: Calculated equal to MA_TERR#
          Enumerated_Domain_Value_Definition_Source: author
    Attribute:
      Attribute_Label:  PTYPE
      Attribute_Definition:  Symbol for mapped tectonostratigraphic terrane
              and areas of water
      Attribute_Definition_Source:  author
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  H2O
          Enumerated_Domain_Value_Definition: water
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  KJfm?
          Enumerated_Domain_Value_Definition: Franciscan Complex,
                                                metasandstone of unknown terrane
                                                affinity
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  Q
          Enumerated_Domain_Value_Definition: Area where terranes are covered
                                                with Quaternary surficial
                                                deposits
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  T
          Enumerated_Domain_Value_Definition: Area where terranes are covered
                                                with Tertiary overlap strata
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  cro
          Enumerated_Domain_Value_Definition: Great Valley Complex, Coast
                                                Range Ophiolite
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  fai
          Enumerated_Domain_Value_Definition: Franciscan Complex, Alacatraz
                                                terrane
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  fg
          Enumerated_Domain_Value_Definition: Franciscan Complex, greenstone
                                                of unknown terrane affinity
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  fm
          Enumerated_Domain_Value_Definition: Franciscan Complex, melange or
                                                Central terrane
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  fmh
          Enumerated_Domain_Value_Definition: Franciscan Complex, Marin
                                                Headlands terrane
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  fmh?
          Enumerated_Domain_Value_Definition: Franciscan Complex, Marin
                                                Headlands terrane,
                                                identification uncertain.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  fnq
          Enumerated_Domain_Value_Definition: Franciscan Complex, Novato
                                                Quarry terrane
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  fnr
          Enumerated_Domain_Value_Definition: Franciscan Complex, Nicasio
                                              Reservoir terrane
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value: fpb 
          Enumerated_Domain_Value_Definition: Franciscan Complex, Permanente
                                                terrane
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  fpe
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  fsb
          Enumerated_Domain_Value_Definition: Franciscan Complex, San Bruno
                                                Mountain terrane
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  fyb
          Enumerated_Domain_Value_Definition: Franciscan Complex, Yolla Bolly
                                              terrane
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  fyb?
          Enumerated_Domain_Value_Definition: Franciscan Complex, Yolla Bolly
                                                terrane, identification
                                                uncertain
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  gvh
          Enumerated_Domain_Value_Definition: Great Valley Complex, Healdsburg
                                                terrane
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  s
          Enumerated_Domain_Value_Definition: Salinian Complex, undivided
          Enumerated_Domain_Value_Definition_Source: author
    Entity_Type:
      Entity_Type_Label:  MA-TERR.AAT
      Entity_Type_Definition:  Attribute table of MA-TERR.
      Entity_Type_Definition_Source:  ARC/INFO
    Attribute:
        Attribute_Label:  -
      Attribute_Definition:  Attribute table of MA-TERR.
          Attribute_Definition_Source:  ARC/INFO
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  -
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  FNODE#
      Attribute_Definition:  Internal number of from-node
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  TNODE#
      Attribute_Definition:  Internal number of to-node
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  LPOLY#
      Attribute_Definition:  Internal number of poly to left of arc
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  RPOLY#
      Attribute_Definition:  Internal number of poly to right of arc
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  LENGTH
      Attribute_Definition:  Length of arc in coverage units
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Positive real numbers
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  MA-TERR#
      Attribute_Definition:  Internal feature number
      Attribute_Definition_Source:  Computed
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Sequential unique positive integer
          Enumerated_Domain_Value_Definition:
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  MA-TERR-ID
      Attribute_Definition:  User-assigned feature number
      Attribute_Definition_Source:  User-defined
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  Integer
          Enumerated_Domain_Value_Definition: Calculated equal to MA-TERR#
          Enumerated_Domain_Value_Definition_Source:
    Attribute:
      Attribute_Label:  LTYPE
      Attribute_Definition:  The type of line in the terrane map.
      Attribute_Definition_Source:  author
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value:  contact, approx. located 
          Enumerated_Domain_Value_Definition:  Boundary between two mapped
               units that retains the original depositional or intrusive
               relationship (i.e. not faulted).  The contact has not been
               observed, so it is not well-located as described in
               Positional_Accuracy, but the location is constrained to be within
               about 2 mm at map scale (1:62,500) or within about 125 meters on
               the ground.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  contact, certain
          Enumerated_Domain_Value_Definition:  Boundary between two mapped
               units that retains the original depositional or intrusive
               relationship (i.e. not faulted).  The contact has been observed,
               so it is well-located as described in Positional_Accuracy.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  contact, concealed
          Enumerated_Domain_Value_Definition:  Boundary between two mapped
               units that retains the original depositional or intrusive
               relationship (i.e. not faulted).  The contact is obscured by
               overlying mapped units, so it is not well-located as described in
               Positional_Accuracy, but the location is constrained to be within
               about 2 mm at map scale (1:62,500) or within about 125 meters on
               the ground.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  fault, active
          Enumerated_Domain_Value_Definition: Structural boundary between
               mapped units or structural discontinuity within a mapped unit
               that has experienced and continues to experience relative offset
               between the rock bodies on either side of the fault. The fault
               has been observed, so it is well-located as described in
               Positional_Accuracy.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  fault, approx. located
          Enumerated_Domain_Value_Definition:: Structural boundary between
               mapped units or structural discontinuity within a mapped unit
               that has experienced relative offset between the rock bodies on
               either side of the fault. The contact has not been observed, so
               it is not well-located as described in Positional_Accuracy, but
               the location is constrained to be within about 2 mm at map scale
               (1:62,500) or within about 125 meters on the ground.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  fault, certain
          Enumerated_Domain_Value_Definition: Structural boundary between
               mapped units or structural discontinuity within a mapped unit
               that has experienced relative offset between the rock bodies on
               either side of the fault. The fault has been observed, so it is
               well-located as described in Positional_Accuracy.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  fault, concealed
          Enumerated_Domain_Value_Definition: Structural boundary between
               mapped units or structural discontinuity within a mapped unit
               that has experienced relative offset between the rock bodies on
               either side of the fault. The fault is obscured by overlying
               mapped units, so it is not well-located as described in
               Positional_Accuracy, but the location is constrained to be within
               about 10 mm at map scale (1:62,500) or within about 625 meters on
               the ground.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  fault, inferred
          Enumerated_Domain_Value_Definition: Structural boundary between
               mapped units or structural discontinuity within a mapped unit
               that has experienced relative offset between the rock bodies on
               either side of the fault. The fault has not been observed, so it
               is not well-located as described in Positional_Accuracy, but the
               location is constrained to be within about 10 mm at map scale
               (1:62,500) or within about 625 meters on the ground.  The
               existence of the fault is inferred from structural and
               stratigraphic relationships observed elsewhere.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  fault, low-angle thrust, approx. lo
          Enumerated_Domain_Value_Definition: Structural boundary between
               mapped units or structural discontinuity within a mapped unit
               that has experienced thrust offset between the rock bodies on
               either side of the fault. The contact has not been observed, so
               it is not well-located as described in Positional_Accuracy, but
               the location is constrained to be within about 2 mm at map scale
               (1:62,500) or within about 125 meters on the ground.  The dip of
               the fault plane is less than 15 degrees.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  fault, low-angle thrust, certain
          Enumerated_Domain_Value_Definition:: Structural boundary between
               mapped units or structural discontinuity within a mapped unit
               that has experienced thrust offset between the rock bodies on
               either side of the fault. The fault has been observed, so it is
               well-located as described in Positional_Accuracy.  The dip of the
               fault plane is less than 15 degrees.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  fault, uncertain
          Enumerated_Domain_Value_Definition: Structural boundary between
               mapped units or structural discontinuity within a mapped unit
               that has experienced relative offset between the rock bodies on
               either side of the fault. The fault has not been observed, so it
               is not well-located as described in Positional_Accuracy, but the
               location is constrained to be within about 10 mm at map scale
               (1:62,500) or within about 625 meters on the ground.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  leader
          Enumerated_Domain_Value_Definition: A line used in concert with 
               annotation to indicate the identity of selected small areas.  The
               line has no other geologic or geographic significance, and its
               position is arbitrary.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  map boundary,
          Enumerated_Domain_Value_Definition: Edge of the mapped area.  Used
                primarily to bound polygons at the edge of the map database.
                The location of the boundary is well located as described in
                Positional_Accuracy
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  reverse fault, approx. located
          Enumerated_Domain_Value_Definition: Structural boundary between
               mapped units or structural discontinuity within a mapped unit
               that has experienced reverse offset between the rock bodies on
               either side of the fault. The contact has not been observed, so
               it is not well-located as described in Positional_Accuracy, but
               the location is constrained to be within about 2 mm at map scale
               (1:62,500) or within about 125 meters on the ground.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  reverse fault, certain
          Enumerated_Domain_Value_Definition: Structural boundary between
               mapped units or structural discontinuity within a mapped unit
               that has experienced reverse offset between the rock bodies on
               either side of the fault. The fault has been observed, so it is
               well-located as described in Positional_Accuracy.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  reverse fault, concealed
          Enumerated_Domain_Value_Definition: Structural boundary between
               mapped units or structural discontinuity within a mapped unit
               that has experienced reverse offset between the rock bodies on
               either side of the fault. The fault is obscured by overlying
               mapped units, so it is not well-located as described in
               Positional_Accuracy, but the location is constrained to be within
               about 10 mm at map scale (1:62,500) or within about 625 meters on
               the ground.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  reverse fault, inferred
          Enumerated_Domain_Value_Definition: Structural boundary between
               mapped units or structural discontinuity within a mapped unit
               that has experienced reverse offset between the rock bodies on
               either side of the fault. The fault has not been observed, so it
               is not well-located as described in Positional_Accuracy, but the
               location is constrained to be within about 10 mm at map scale
               (1:62,500) or within about 625 meters on the ground.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  reverse fault, inferred, queried
          Enumerated_Domain_Value_Definition: Structural boundary between
               mapped units or structural discontinuity within a mapped unit
               that has experienced reverse offset between the rock bodies on
               either side of the fault. The fault has not been observed, so it
               is not well-located as described in Positional_Accuracy, but the
               location is constrained to be within about 10 mm at map scale
               (1:62,500) or within about 625 meters on the ground.  The
               existence of this fault is inferred from probable regional and
               structural relationships.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  scratch boundary,
          Enumerated_Domain_Value_Definition: An arbitrary line with no
                geologic significance.  Used primarily to divide polygons that
                would otherwise have more vertices than allowed by Arc/Info.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  thrust fault, certain
          Enumerated_Domain_Value_Definition: Structural boundary between
               mapped units or structural discontinuity within a mapped unit
               that has experienced thrust offset between the rock bodies on
               either side of the fault. The fault has been observed, so it is
               well-located as described in Positional_Accuracy.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  thrust fault, concealed
          Enumerated_Domain_Value_Definition: Structural boundary between
               mapped units or structural discontinuity within a mapped unit
               that has experienced thrust offset between the rock bodies on
               either side of the fault. The fault is obscured by overlying
               mapped units, so it is not well-located as described in
               Positional_Accuracy, but the location is constrained to be within
               about 10 mm at map scale (1:62,500) or within about 625 meters on
               the ground.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  water boundary
          Enumerated_Domain_Value_Definition: The edge of a mapped body of
               water.  This line is derived from the base map, and therefore is
               well-located as described in Positional_Accuracy.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  water boundary,
          Enumerated_Domain_Value_Definition: The edge of a mapped body of
               water.  This line is derived from the base map, and therefore is
               well-located as described in Positional_Accuracy.
          Enumerated_Domain_Value_Definition_Source: author
        Enumerated_Domain:
          Enumerated_Domain_Value:  water boundary, certain
          Enumerated_Domain_Value_Definition: The edge of a mapped body of
               water.  This line is derived from the base map, and therefore is
               well-located as described in Positional_Accuracy.
          Enumerated_Domain_Value_Definition_Source: author
  
   Overview_Description:
      Entity_and_Attribute_Overview:
        The databases in this report were compiled in ARC/INFO, a commercial
        Geographic Information System (Environmental Systems Research
        Institute, Redlands, California).  Almost all the attributes in the
        various attribute tables of the coverages included in the report are
        set or calculated by Arc/Info.  The exceptions are "coveragename"-ID,
        LTYPE, PTYPE, PTTYPE, BKTYPE, SAMPNO, STRIKE, and DIP. 
          "coveragename"-ID is required by internal policy to be sequential.
        This ensures the highest compatibility of our databases with other GISs.
        Therefore "coveragename"-ID is calculated equal to "coveragename"#,
        which is a unique, sequential integer assigned by Arc/Info to each
        data record.
         LTYPE, PTYPE, and PTTYPE are author added items to the coverage AAT
        or PAT that are used to describe the type of line (LTYPE), area (PTYPE),
        or point (PTTYPE) being recorded.  All coverages with AAT and PAT
        present include these items in the data structure, although in some
        cases these items are not used.  Each has WIDTH 35, OUTPUT 35, TYPE C.
        BKTYPE is an author added item that contains information about the
        type of rock observed at a certain point.  It has WIDTH 2, OUTPUT 2, 
        TYPE C.  This item is only recorded in the table MA-BLKS.PAT
         STRIKE and DIP are author added items to the coverage PAT that record
        information about the orientation of planar geologic structures.  Both
        have WIDTH 3, OUTPUT 3, TYPE I.  These items are only recorded in the
        table MA-STRC.PAT

    Entity_and_Attribute_Detail_Citation: This report, madb.txt, madb.pdf,
                                          or madb.ps AND mageo.txt, mageo.pdf,
                                          or mageo.ps
 
 Distribution_Information:
 Metadata_Reference_Information:
  Metadata_Date: 19990826
  Metadata_Contact:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person:  R.W. Graymer
        Contact_Organization:  U.S. Geological Survey
      Contact_Address:
        Address_Type: Mailing
        Address: 345 Middlefield Rd., M/S 975
        City: Menlo Park
        State_or_Province: CA
        Postal_Code: 94025
        Country: USA
  
 
  Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
  Metadata_Standard_Version:  19940608
  Metadata_Time_Convention:  Local Time
  Metadata_Security_Information:
    Metadata_Security_Classification_System:  None
    Metadata_Security_Classification:  Unclassified
    Metadata_Security_Handling_Description:  None