Identification_Information:

  Citation:
    Citation_Information:
      Originator: Victoria R. Todd
      Publication_Date: 2004
      Title: Preliminary Geologic Map of the El Cajon 30' x 60' Quadrangle, Southern California, Version 1.0
      Edition: Version 1.0, 2004
      Geospatial_Data_Presentation_Form: vector digital data
      Series_Information:
        Series_Name: U.S. Geological Survey Open-File Report
        Issue_Identification: USGS OFR 2004-1361
      Publication_Information:
        Publication_Place: Menlo Park, California
        Publisher: U.S. Geological Survey
      Online_Linkage: http://pubs.usgs.gov/of/2004/1361/
  Description:

    Abstract:
      This data set maps and describes the geology of the El Cajon 30' x 60' quadrangle, southern California.  Compilation of the El Cajon quadrangle is based upon published mapping at various scales, unpublished mapping at 1:24,000 scale, and reconnaissance mapping.  Mapping was done by fieldwork and the use of aerial photographs at 1:24,000 scale.

      The El Cajon quadrangle includes parts of two physiographic provinces: the Peninsular Ranges Province on the west underlies the major part of the quadrangle; the western Colorado Desert (locally called the Anza-Borrego Desert) underlies the northeastern corner.  The approximate boundary between these two provinces is the Neogene Elsinore Fault Zone, the westernmost on-land strand of the San Andreas Fault System.  Movements within the Elsinore Fault Zone are believed to have resulted in the uplift and westward rotation of the Peninsular Ranges block relative to the western Colorado Desert (Gastil and others, 1975).  As a result, elevations in the El Cajon quadrangle increase from less than 100 m in the westernmost part of the quadrangle to ~2000 m along the irregular mountainous spine of the Peninsular Ranges (the Cuyamaca, Laguna, Tierra Blanca, and Jacumba Mountains); elevations then decrease rapidly eastward to <100 m in the Anza-Borrego Desert.
      Southwest of the Elsinore Fault Zone, the El Cajon quadrangle is underlain by Jurassic and Cretaceous plutonic rocks of the composite Peninsular Ranges Batholith, which contains screens of variably metamorphosed Mesozoic supracrustal rocks.  Late Jurassic and Early Cretaceous volcanic and volcaniclastic rocks that are exposed in the western part of the quadrangle represent an older, superjacent part of the Peninsular Ranges magmatic arc.  Upper Cretaceous and Eocene marine and nonmarine strata were deposited widely upon the eroded batholith but are preserved only in the westernmost part of the quadrangle (the San Diego embayment).  Pliocene and Pleistocene coastal terrace deposits rest unconformably upon the early Tertiary rocks in the southwestern corner of the quadrangle.
      Northeast of the Elsinore Fault Zone, the El Cajon quadrangle exposes extensive Neogene nonmarine and marine sedimentary and volcanic rocks of the Fish Creek-Vallecito basin.  Basement uplifts in this region are composed of crystalline rocks of the eastern Peninsular Ranges Batholith (the Vallecito, Fish Creek, and Coyote Mountains).
    Purpose: The data set for the El Cajon 30' x 60' quadrangle was prepared under the U.S. Geological Survey Southern California Areal Mapping Project (SCAMP) as part of an ongoing effort to develop a regional geologic framework of southern California, and to utilize a Geographic Information System (GIS) format to create regional digital geologic databases.  These regional databases are being developed as contributions to the National Geologic Map Database of the National Cooperative Geologic Mapping Program of the USGS.
    Supplemental_Information: None
  Time_Period_of_Content:
    Time_Period_Information:
      Single_Date/Time:
        Calendar_Date: 2004
    Currentness_Reference: New data

  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: None planned

  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -117
      East_Bounding_Coordinate: -115.99581042
      North_Bounding_Coordinate: 33.00400553
      South_Bounding_Coordinate: 32.54065598

  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: None
      Theme_Keyword: Geologic map
      Theme_Keyword: Geology
      Theme_Keyword: Bedrock geology
      Theme_Keyword: Surficial geology
      Theme_Keyword: Fault
      Theme_Keyword: Peninsular Ranges Batholith
    Place:
      Place_Keyword_Thesaurus: None
      Place_Keyword: California
      Place_Keyword: San Diego County
      Place_Keyword: Imperial County
      Place_Keyword: El Cajon 30' x 60' quadrangle

    Stratum:
      Stratum_Keyword_Thesaurus: None
      Stratum_Keyword: metamorphic miogeoclinal Paleozoic rocks
      Stratum_Keyword: metamorphosed Triassic and Jurassic submarine fan deposits
      Stratum_Keyword: Jurassic and Cretaceous granitic rocks
      Stratum_Keyword: Upper Cretaceous marine sedimentary rocks
      Stratum_Keyword: Eocene marine and nonmarine sedimentary rocks
      Stratum_Keyword: Neogene sedimentary and volcanic rocks
  Access_Constraints: None

  Use_Constraints:
    The El Cajon 30' x 60' geologic-map database should be used to evaluate and understand the geologic character of the El Cajon quadrangle as a whole.  The data should not be used for purposes of site-specific land-use planning or site-specific geologic evaluations.  The database is sufficiently detailed to identify and characterize many actual and potential geologic hazards represented by faults and landslides and posed by ground subsidence and earthquake-generated ground shaking.  However, it is not sufficiently detailed for site-specific determinations or evaluations of these features.  Faults shown do not take the place of fault-rupture hazard zones designated by the California State Geologist (see Hart, 1988).

    Use of this digital geologic-map database 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 compiled and edited at a scale of 1:100,000 means that higher resolution information may not have been uniformly retained in the dataset.  Plotting at scales larger than 1:100,000 will not yield greater real detail, although it may reveal fine-scale irregularities below the intended resolution of the database.  Similarly, although higher resolution data is incorporated in most of the map, the resolution of the combined output will be limited by the lower resolution data.
  Point_of_Contact:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Douglas M. Morton
        Contact_Organization: U.S. Geological Survey, Western Region, Earth Surface Processes Team
      Contact_Position: Project Geologist
      Contact_Address:
        Address_Type: mailing address
        Address: U.S. Geological Survey
        Address: Department of Earth Sciences

        Address: University of California, Riverside

        City: Riverside
        State_or_Province: California
        Postal_Code: 92521
        Country: USA
      Contact_Voice_Telephone: (909)276-6397
      Contact_Facsimile_Telephone: (909)276-6295
      Contact_Electronic_Mail_Address: scamp@usgs.gov

  Data_Set_Credit:
    Technical review by F.K. Miller and M.P. Kennedy led to significant improvements that eventually were reflected in aspects of the database, the plot file, and in the description of the geologic units of the El Cajon 30' x 60' quadrangle.

    Geologic mapping and digital preparation of this report were sponsored jointly by (1) the National Cooperative Geologic Mapping Program of the U.S. Geological Survey, (2) the California Geological Survey, and (3) the Southern California Areal Mapping Project (SCAMP).

  Native_Data_Set_Environment:
    Windows_NT, 5.1, Intel
    ARC/INFO version 8.2

  Cross_Reference:
    Citation_Information:
      Originator: Everhart, D.L.
      Publication_Date: 1951
      Title: Geology of the Cuyamaca Peak quadrangle, San Diego County, California
      Edition: Bulletin 159
      Geospatial_Data_Presentation_Form: bulletin
      Series_Information:
        Series_Name: California Division of Mines and Geology Bulletin
      Publication_Information:
        Publication_Place: California
        Publisher: California Division of Mines and Geology, Department of Conservation

  Cross_Reference:
    Citation_Information:
      Originator: Hanna, M.A.
      Publication_Date: 1926
      Title: Geology of the La Jolla quadrangle, California
      Edition: Bulletin v. 16
      Geospatial_Data_Presentation_Form: bulletin
      Series_Information:
        Series_Name: Department of Geological Sciences Bulletin
      Publication_Information:
        Publication_Place: California
        Publisher: University of California

  Cross_Reference:
    Citation_Information:
      Originator: Hoggatt, W.C.
      Publication_Date: 1979
      Title: Geologic map of the Sweeney Pass quadrangle, San Diego County, California
      Edition: Open-File report 79-754
      Geospatial_Data_Presentation_Form: map
      Series_Information:
        Series_Name: Open-File report
      Publication_Information:
        Publication_Place: Menlo Park, California
        Publisher: U.S. Geological Survey

  Cross_Reference:
    Citation_Information:
      Originator: Hoggatt, W.C., and Todd, V.R.
      Publication_Date: 1977
      Title: Geologic map of the Descanso quadrangle, San Diego County, California
      Edition: Open-File report 77-406
      Geospatial_Data_Presentation_Form: map
      Series_Information:
        Series_Name: Open-File report
      Publication_Information:
        Publication_Place: Menlo Park, California
        Publisher: U.S. Geological Survey

  Cross_Reference:
    Citation_Information:
      Originator: Jachens, R.C.
      Publication_Date: 1992
      Title: Aeromagnetic map of the El Cajon 1:100,000 scale quadrangle, California
      Edition: Open-File report 92-548
      Geospatial_Data_Presentation_Form: map
      Series_Information:
        Series_Name: Open-File report
      Publication_Information:
        Publication_Place: Menlo Park, California
        Publisher: U.S. Geological Survey

  Cross_Reference:
    Citation_Information:
      Originator: Kennedy, M.P.
      Publication_Date: 1975
      Title: Geology of western San Diego metropolitan area, California
      Edition: Bulletin 200
      Geospatial_Data_Presentation_Form: map
      Series_Information:
        Series_Name: California Division of Mines and Geology Bulletin
      Publication_Information:
        Publication_Place: California
        Publisher: California Division of Mines and Geology, Department of Conservation

  Cross_Reference:
    Citation_Information:
      Originator: Kennedy, M.P.
      Publication_Date: in press
      Title: Geologic Map of the San Diego 30' x 60' Quadrangle, California: scale 1:100,000
      Edition: in press
      Geospatial_Data_Presentation_Form: map
      Series_Information:
        Series_Name: Open-File report
      Publication_Information:
        Publication_Place: California
        Publisher: California Geological Survey, Department of Conservation

  Cross_Reference:
    Citation_Information:
      Originator: Kennedy, M.P., and Peterson, G.L.
      Publication_Date: 1975
      Title: Geology of the eastern San Diego metropolitan area, California
      Edition: Bulletin 200
      Geospatial_Data_Presentation_Form: map
      Series_Information:
        Series_Name: California Division of Mines and Geology Bulletin
      Publication_Information:
        Publication_Place: California
        Publisher: California Division of Mines and Geology, Department of Conservation

  Cross_Reference:
    Citation_Information:
      Originator: Kennedy, M.P., and Tan, S.S.
      Publication_Date: 1977
      Title: Geology of National City, Imperial Beach, and Otay Mesa quadrangles, southern San Diego metropolitan area, California
      Edition: Map Sheet 29
      Geospatial_Data_Presentation_Form: map
      Series_Information:
        Series_Name: California Division of Mines and Geology Map Sheet
      Publication_Information:
        Publication_Place: California
        Publisher: California Division of Mines and Geology, Department of Conservation

  Cross_Reference:
    Citation_Information:
      Originator: Strand, R.G.
      Publication_Date: 1962
      Title: Geologic map of California, San Diego-El Centro sheet, scale 1:250,000
      Edition: Open-File report 1962
      Geospatial_Data_Presentation_Form: map
      Series_Information:
        Series_Name: California Division of Mines and Geology Map
      Publication_Information:
        Publication_Place: California
        Publisher: California Division of Mines and Geology, Department of Conservation

  Cross_Reference:
    Citation_Information:
      Originator: Todd, V.R.
      Publication_Date: 1977
      Title: Geologic map of the Cuyamaca Peak quadrangle, San Diego County, California
      Edition: Open-File report 77-405
      Geospatial_Data_Presentation_Form: map
      Series_Information:
        Series_Name: U.S. Geological Survey Open-File Report
      Publication_Information:
        Publication_Place: Menlo Park, California
        Publisher: U.S. Geological Survey

  Cross_Reference:
    Citation_Information:
      Originator: Todd, V.R.
      Publication_Date: 1977
      Title: Geologic map of the Agua Caliente Springs quadrangle, San Diego County, California
      Edition: Open-File report 77-742
      Geospatial_Data_Presentation_Form: map
      Series_Information:
        Series_Name: U.S. Geological Survey Open-File Report
      Publication_Information:
        Publication_Place: Menlo Park, California
        Publisher: U.S. Geological Survey

  Cross_Reference:
    Citation_Information:
      Originator: Todd, V.R.
      Publication_Date: 1978
      Title: Geologic map of the Monument Peak quadrangle, San Diego County, California
      Edition: Open-File Report 78-697
      Geospatial_Data_Presentation_Form: map
      Series_Information:
        Series_Name: U.S. Geological Survey Open-File Report
      Publication_Information:
        Publication_Place: Menlo Park, California
        Publisher: U.S. Geological Survey

  Cross_Reference:
    Citation_Information:
      Originator: Todd, V.R.
      Publication_Date: 1978
      Title: Geologic map of the Viejas Mountain quadrangle, San Diego County, California
      Edition: Open-File Report 78-113
      Geospatial_Data_Presentation_Form: map
      Series_Information:
        Series_Name: U.S. Geological Survey Open-File Report
      Publication_Information:
        Publication_Place: Menlo Park, California
        Publisher: U.S. Geological Survey

  Cross_Reference:
    Citation_Information:
      Originator: Todd, V.R.
      Publication_Date: 1979
      Title: Geologic map of the Mount Laguna quadrangle, San Diego County, California
      Edition: Open-File Report 79-862
      Geospatial_Data_Presentation_Form: map
      Series_Information:
        Series_Name: U.S. Geological Survey Open-File Report
      Publication_Information:
        Publication_Place: Menlo Park, California
        Publisher: U.S. Geological Survey

  Cross_Reference:
    Citation_Information:
      Originator: Todd, V.R.
      Publication_Date: 1980
      Title: Geologic map of the Alpine quadrangle, San Diego County, California
      Edition: Open-File Report 80-82
      Geospatial_Data_Presentation_Form: map
      Series_Information:
        Series_Name: U.S. Geological Survey Open-File Report
      Publication_Information:
        Publication_Place: Menlo Park, California
        Publisher: U.S. Geological Survey

  Cross_Reference:
    Citation_Information:
      Originator: Todd, V.R.
      Publication_Date: 1982
      Title: Geologic map of the Tule Springs quadrangle, San Diego County, California
      Edition: Open-File Report 82-221
      Geospatial_Data_Presentation_Form: map
      Series_Information:
        Series_Name: U.S. Geological Survey Open-File Report
      Publication_Information:
        Publication_Place: Menlo Park, California
        Publisher: U.S. Geological Survey

  Cross_Reference:
    Citation_Information:
      Originator: Todd, V.R.
      Publication_Date: 1983
      Title: Geologic map of the El Cajon Mountain quadrangle, San Diego County, California
      Edition: Open-File Report 83-781
      Geospatial_Data_Presentation_Form: map
      Series_Information:
        Series_Name: U.S. Geological Survey Open-File Report
      Publication_Information:
        Publication_Place: Menlo Park, California
        Publisher: U.S. Geological Survey

  Cross_Reference:
    Citation_Information:
      Originator: Todd, V.R.
      Publication_Date: 1995
      Title: Geologic map of the Mount Laguna 15' quadrangle, San Diego County, California
      Edition: Open-File Report 95-522
      Geospatial_Data_Presentation_Form: map
      Series_Information:
        Series_Name: U.S. Geological Survey Open-File Report
      Publication_Information:
        Publication_Place: Menlo Park, California
        Publisher: U.S. Geological Survey

Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report:
      Geologic-map units in the El Cajon quadrangle database were described using standard field methods.  Consistent with these methods, the database author has assigned standard geologic attributes to geologic lines, points, and polygons identified in the database.

      Nation-wide geologic-map accuracy standards have not been developed and adopted by the U.S. Geological Survey and other earth-science entities.  Until such standards are adopted, the SCAMP project has developed internal map-accuracy standards for 1:100,000-scale geologic maps produced by the project.

      Geologic lines and points on 1:100,000 scale geologic maps are judged to meet SCAMP's internal map-accuracy standards if they are located to within +/-50 meters, relative to topographic or cultural features on the base map.  On any derivative geologic-map plot, line data that are judged to meet the SCAMP internal map-accuracy standard are denoted by solid lines; line data that may not meet the SCAMP internal map-accuracy standard are denoted by dashed or dotted lines.  There is no cartographic device for denoting the map-accuracy for geologic-point data (e.g., symbols representing bedding, foliation, lineations, etc.).
  Logical_Consistency_Report:
    Polygon and chain-node topology present.

    The areal extent of the map is represented digitally by an appropriately projected (UTM projection), mathematically generated box.  Consequently, polygons intersecting the lines that comprise the map boundary are closed by that boundary.  Polygons internal to the map boundary are completely enclosed by line segments which are themselves a set of sequentially numbered coordinate pairs.  Point data are represented by coordinate pairs.
  Completeness_Report: The geologic map and digital database of the El Cajon 30' x 60' quadrangle contain new and compiled data that have been subjected to rigorous review and are a substantially complete representation of the current state of knowledge concerning the geology of the area.
  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report: The maximum transformation RMS error acceptable for 30' x 60' quadrangle transformation and data input is 0.003 (7.6 meters).  Horizontal positional accuracy was checked by visual comparison of hard-copy plots with base-stable source data.
  Lineage:
    Process_Step:
      Process_Description: Field mapping and aerial photograph interpretation; iterative process (V.R. Todd).
      Process_Date: 1996 - 2001

    Process_Step:
      Process_Description: Transfer of geologic linework and point data from field maps and aerial photographs to a scale-stable cartographic base of quadrangle (V.R. Todd).
      Process_Date: 2001

    Process_Step:
      Process_Description: The geologic map information was scanned from a clear-film, base-stable blackline positive of the author-prepared geologic map at 1:100,000 scale.  The raster scan was auto-vectorized, converted to an ARC/INFO coverage using standard ARC/INFO commands, and minimally attributed by TGS Techni Graphic Systems, Inc.
      Process_Date: 2002 - 2003

    Process_Step:
      Process_Description: ARC/INFO database revised; polygon, arc, and point attribute tables updated to conform to other SCAMP coverages.  Digitizing and editing artifacts significant enough to display at a scale of 1:100,000 scale were corrected (R.M. Alvarez).
      Process_Date: 2003 - 2004

    Process_Step:
      Process_Description: The four coverages that provide base map reference data (hypsography/topography, hydrography, and transportation/road/rail/cultural information) were derived from USGS 1:100,000 scale DLGs available on the Web:  http://edcwww.cr.usgs.gov/glis/glis.html (R.M. Alvarez)
      Process_Date: 2003

    Process_Step:
      Process_Description: Science reviews completed by F.K. Miller and M.P. Kennedy; technical/digital review completed by P.M. Cossette.
      Process_Date: 2004

    Process_Step:
      Process_Description:
        First draft of metadata created by Rachel Alvarez using
        FGDCMETA.AML ver. 1.2 05/14/98 on ARC/INFO data set
        c:\ralvarez\el_cajon\100krelease\ec1_geo
      Process_Date: 20040423

Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Vector
  Point_and_Vector_Object_Information:
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: Point
      Point_and_Vector_Object_Count: 3418
      SDTS_Point_and_Vector_Object_Type: String
      Point_and_Vector_Object_Count: 11614
      SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
      Point_and_Vector_Object_Count: 3419

Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Planar:
      Grid_Coordinate_System:
        Grid_Coordinate_System_Name: Universal Transverse Mercator
        Universal_Transverse_Mercator:
          UTM_Zone_Number: 11
          Transverse_Mercator:
            Scale_Factor_at_Central_Meridian: 1.0
            Longitude_of_Central_Meridian: -117.50
            Latitude_of_Projection_Origin: 32.50
            False_Easting: 0.000
            False_Northing: 0.000
      Planar_Coordinate_Information:
        Planar_Coordinate_Encoding_Method: coordinate pair
        Coordinate_Representation:
          Abscissa_Resolution: 9.394323283332
          Ordinate_Resolution: 9.394323283332
        Planar_Distance_Units: Meters
    Geodetic_Model:
      Horizontal_Datum_Name: North American Datum of 1927
      Ellipsoid_Name: Clarke 1866
      Semi-major_Axis: 6378206.4
      Denominator_of_Flattening_Ratio: 294.98

Entity_and_Attribute_Information:
  Overview_Description:
    Entity_and_Attribute_Overview:
      Version 1.0 of the El Cajon 30' x 60' quadrangle comprises six
      ARC/INFO coverages, of which three contain geologic data, one contains
      cartographic features, and four provide base-map, DLG-derived, reference
      data: ec1_geo (geology), ec1_str (structural point data), ec1_arw (landslide arrows), ec1_anno (geologic
      unit annotation, label leaders, locality names), ec_hypso (hypsography),
      ec_hydro (hydrography), ec_roads and ec_rail (transportation and cultural
      data).
    Entity_and_Attribute_Detail_Citation: none

  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: ec1_geo.pat
      Entity_Type_Definition: Geologic units (LABL) and their corresponding names (NAME) identified in the El Cajon 30' x 60' quadrangle.
    Attribute:
      Attribute_Label: LABL
      Attribute_Definition: geologic map unit label, in plain text
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Qya
          Enumerated_Domain_Value_Definition: Young alluvium
        Enumerated_Domain:
          Enumerated_Domain_Value: Qc
          Enumerated_Domain_Value_Definition: Colluvium
        Enumerated_Domain:
          Enumerated_Domain_Value: Qu
          Enumerated_Domain_Value_Definition: Alluvium, undivided
        Enumerated_Domain:
          Enumerated_Domain_Value: Qls
          Enumerated_Domain_Value_Definition: Landslide deposits
        Enumerated_Domain:
          Enumerated_Domain_Value: Qoa
          Enumerated_Domain_Value_Definition: Older alluvium
        Enumerated_Domain:
          Enumerated_Domain_Value: Qm
          Enumerated_Domain_Value_Definition: Mesa Conglomerate
        Enumerated_Domain:
          Enumerated_Domain_Value: Qt
          Enumerated_Domain_Value_Definition: Terrace deposits
        Enumerated_Domain:
          Enumerated_Domain_Value: Ql
          Enumerated_Domain_Value_Definition: Lindavista Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: QTf
          Enumerated_Domain_Value_Definition: Fanglomerate
        Enumerated_Domain:
          Enumerated_Domain_Value: QTps
          Enumerated_Domain_Value_Definition: Palm Spring Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: Tsd
          Enumerated_Domain_Value_Definition: San Diego Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: To
          Enumerated_Domain_Value_Definition: Otay Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: Ti
          Enumerated_Domain_Value_Definition: Imperial Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: Tf
          Enumerated_Domain_Value_Definition: Fanglomerate
        Enumerated_Domain:
          Enumerated_Domain_Value: Tfc
          Enumerated_Domain_Value_Definition: Fish Creek Gypsum
        Enumerated_Domain:
          Enumerated_Domain_Value: Tsm
          Enumerated_Domain_Value_Definition: Split Mountain Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: Tal
          Enumerated_Domain_Value_Definition: Alverson Andesite
        Enumerated_Domain:
          Enumerated_Domain_Value: Tj
          Enumerated_Domain_Value_Definition: Jacumba Volcanics
        Enumerated_Domain:
          Enumerated_Domain_Value: Ta
          Enumerated_Domain_Value_Definition: Anza Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: Tp
          Enumerated_Domain_Value_Definition: Pomerado Conglomerate
        Enumerated_Domain:
          Enumerated_Domain_Value: Tmv
          Enumerated_Domain_Value_Definition: Mission Valley Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: Tst
          Enumerated_Domain_Value_Definition: Stadium Conglomerate
        Enumerated_Domain:
          Enumerated_Domain_Value: Tfr
          Enumerated_Domain_Value_Definition: Friars Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: Kl
          Enumerated_Domain_Value_Definition: Lusardi Formation
        Enumerated_Domain:
          Enumerated_Domain_Value: Kmgp
          Enumerated_Domain_Value_Definition: Monzogranite of Mother Grundy Peak
        Enumerated_Domain:
          Enumerated_Domain_Value: Kcm
          Enumerated_Domain_Value_Definition: Corte Madera Monzogranite
        Enumerated_Domain:
          Enumerated_Domain_Value: Kcp
          Enumerated_Domain_Value_Definition: Chiquito Peak Monzogranite
        Enumerated_Domain:
          Enumerated_Domain_Value: Kjv
          Enumerated_Domain_Value_Definition: Japatul Valley Tonalite
        Enumerated_Domain:
          Enumerated_Domain_Value: Ka
          Enumerated_Domain_Value_Definition: Tonalite of Alpine
        Enumerated_Domain:
          Enumerated_Domain_Value: Kgr
          Enumerated_Domain_Value_Definition: Granitoid rocks
        Enumerated_Domain:
          Enumerated_Domain_Value: Klb
          Enumerated_Domain_Value_Definition: Tonalite of Las Bancas
        Enumerated_Domain:
          Enumerated_Domain_Value: Kc
          Enumerated_Domain_Value_Definition: Cuyamaca Gabbro
        Enumerated_Domain:
          Enumerated_Domain_Value: KJtg
          Enumerated_Domain_Value_Definition: Tonalite and gabbro
        Enumerated_Domain:
          Enumerated_Domain_Value: KJld
          Enumerated_Domain_Value_Definition: Leucocratic dikes
        Enumerated_Domain:
          Enumerated_Domain_Value: Kih
          Enumerated_Domain_Value_Definition: Indian Hill granodiorite of Parrish and others (1986)
        Enumerated_Domain:
          Enumerated_Domain_Value: Klp
          Enumerated_Domain_Value_Definition: Tonalite of La Posta
        Enumerated_Domain:
          Enumerated_Domain_Value: Kgm
          Enumerated_Domain_Value_Definition: Tonalite of Granite Mountain
        Enumerated_Domain:
          Enumerated_Domain_Value: Kgm4
          Enumerated_Domain_Value_Definition: Tonalite of Granite Mountain, Unit 4
        Enumerated_Domain:
          Enumerated_Domain_Value: Kgm3
          Enumerated_Domain_Value_Definition: Tonalite of Granite Mountain, Unit 3
        Enumerated_Domain:
          Enumerated_Domain_Value: Kgm2
          Enumerated_Domain_Value_Definition: Tonalite of Granite Mountain, Unit 2
        Enumerated_Domain:
          Enumerated_Domain_Value: Kgm1
          Enumerated_Domain_Value_Definition: Tonalite of Granite Mountain, Unit 1
        Enumerated_Domain:
          Enumerated_Domain_Value: Kpv
          Enumerated_Domain_Value_Definition: Monzogranite of Pine Valley
        Enumerated_Domain:
          Enumerated_Domain_Value: KJem
          Enumerated_Domain_Value_Definition: Quartz Diorite of East Mesa
        Enumerated_Domain:
          Enumerated_Domain_Value: Jcr
          Enumerated_Domain_Value_Definition: Granodiorite of Cuyamaca Reservoir
        Enumerated_Domain:
          Enumerated_Domain_Value: Jhc
          Enumerated_Domain_Value_Definition: Gneiss of Harper Creek
        Enumerated_Domain:
          Enumerated_Domain_Value: Jsp
          Enumerated_Domain_Value_Definition: Migmatitic schist and gneiss of Stephenson Peak
        Enumerated_Domain:
          Enumerated_Domain_Value: Ksp
          Enumerated_Domain_Value_Definition: Santiago Peak Volcanics
        Enumerated_Domain:
          Enumerated_Domain_Value: Kmv
          Enumerated_Domain_Value_Definition: Metavolcanic rocks
        Enumerated_Domain:
          Enumerated_Domain_Value: KJvs
          Enumerated_Domain_Value_Definition: Metavolcanic and metasedimentary rocks
        Enumerated_Domain:
          Enumerated_Domain_Value: JTRm
          Enumerated_Domain_Value_Definition: Metasedimentary and metavolcanic rocks
        Enumerated_Domain:
          Enumerated_Domain_Value: MzPzm
          Enumerated_Domain_Value_Definition: Rocks of Jacumba Mountains
        Enumerated_Domain:
          Enumerated_Domain_Value: Pzm
          Enumerated_Domain_Value_Definition: Metasedimentary rocks
    Attribute:
      Attribute_Label: NAME
      Attribute_Definition: Geologic name of map unit (see list under LABL attribute)
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: ec1_geo.aat
      Entity_Type_Definition: Geologic features such as contacts and faults that bound rock-unit polygons.
    Attribute:
      Attribute_Label: LTYPE
      Attribute_Definition: Description of line type
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: contact, approximately located
        Enumerated_Domain:
          Enumerated_Domain_Value: contact, certain
        Enumerated_Domain:
          Enumerated_Domain_Value: contact, queried
        Enumerated_Domain:
          Enumerated_Domain_Value: fault, approximately located
        Enumerated_Domain:
          Enumerated_Domain_Value: fault, certain
        Enumerated_Domain:
          Enumerated_Domain_Value: fault, certain, apparent scarp
        Enumerated_Domain:
          Enumerated_Domain_Value: fault, concealed
        Enumerated_Domain:
          Enumerated_Domain_Value: fault, concealed, queried
        Enumerated_Domain:
          Enumerated_Domain_Value: fault, inferred
        Enumerated_Domain:
          Enumerated_Domain_Value: fault, queried
        Enumerated_Domain:
          Enumerated_Domain_Value: scratch boundary
        Enumerated_Domain:
          Enumerated_Domain_Value: water boundary
        Enumerated_Domain:
          Enumerated_Domain_Value: map boundary
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: ec1_str.pat
      Entity_Type_Definition: Geologic structural point data includes site-specific information describing the types and orientation of bedding, foliation, and lineation.  Dip values for each point are also stored as annotation.
    Attribute:
      Attribute_Label: PTTYPE
      Attribute_Definition: Description of point type
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: anticline symbol
        Enumerated_Domain:
          Enumerated_Domain_Value: bedding, horizontal
        Enumerated_Domain:
          Enumerated_Domain_Value: bedding, inclined
        Enumerated_Domain:
          Enumerated_Domain_Value: dip of fault
        Enumerated_Domain:
          Enumerated_Domain_Value: direction of plunge of fold axis
        Enumerated_Domain:
          Enumerated_Domain_Value: igneous foliation, inclined
        Enumerated_Domain:
          Enumerated_Domain_Value: igneous foliation, vertical
        Enumerated_Domain:
          Enumerated_Domain_Value: metamorphic foliation, inclined
        Enumerated_Domain:
          Enumerated_Domain_Value: metamorphic foliation, vertical
        Enumerated_Domain:
          Enumerated_Domain_Value: syncline symbol
Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
      Contact_Address:
        Address_Type: mailing address
        Address: Box 25286 Denver Federal Center
        City: Denver
        State_or_Province: CO
        Postal_Code: 80225
        Country: USA
      Contact_Voice_Telephone: 303-202-4700
      Contact_Facsimile_Telephone: 303-202-4693
  Distribution_Liability:
    The U.S. Geological Survey (USGS) provides these geographic data "as
    is."  The USGS makes no guarantee or warranty concerning the accuracy of
    information contained in the geographic data.  The USGS further makes no
    warranties, either expressed or implied as to any other matter
    whatsoever, including, without limitation, the condition of the product,
    or its fitness for any particular purpose.  The burden for determining
    fitness for use lies entirely with the user.  Although these data have
    been processed successfully on computers at the USGS, no warranty,
    expressed or implied, is made by the USGS regarding the use of these
    data on any other system, nor does the fact of distribution constitute
    or imply any such warranty.

    In no event shall the USGS have any liability whatsoever for payment of
    any consequential, incidental, indirect, special, or tort damages of any
    kind, including, but not limited to, any loss of profits arising out of
    use of or reliance on the geographic data or arising out of the
    delivery, installation, operation, or support by USGS.

    This digital, geologic map database of the El Cajon 30' x 60'
    quadrangle, 1:100,000 map-scale, and any derivative maps thereof, is not
    meant to be used or displayed at any scale larger than 1:100,000 (e.g.,
    1:24,000).
Metadata_Reference_Information:
  Metadata_Date: 20040423
  Metadata_Review_Date: 20040617
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
        Contact_Person: Rachel Alvarez
      Contact_Position: Geologist
      Contact_Address:
        Address_Type: mailing address
        Address: U.S. Geological Survey
        Address: Department of Earth Sciences
        Address: University of California, Riverside
        City: Riverside
        State_or_Province: California
        Postal_Code: 92521
        Country: USA
      Contact_Voice_Telephone: 909-276-6397
      Contact_Facsimile_Telephone: 909-276-6295
      Contact_Electronic_Mail_Address: ralvarez@usgs.gov
  Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
  Metadata_Standard_Version: Version of June 8, 1994
  Metadata_Access_Constraints: none
  Metadata_Use_Constraints: none
