Identification_Information:
  Citation:
    Citation_Information:
      Originator: Margaret E. Berry
      Originator: Janet L. Slate
      Originator: James B. Paces
      Originator: Paul R. Hanson
      Originator: Theodore R. Brandt
      Publication_Date: 2015
      Title: Geologic map of the Masters 7.5’ quadrangle, Weld and
        Morgan Counties, Colorado 
      Edition: 1.0
      Geospatial_Data_Presentation_Form: map
      Series_Information:
        Series_Name: USGS Scientific Investigations Map
        Issue_Identification: SIM 3344
      Publication_Information:
        Publication_Place: Denver, Colorado
        Publisher: U.S. Geological Survey
      Online_Linkage: http://dx.doi.org/10.3133/sim3344
  Description:
    Abstract:
      The Masters 7.5’ quadrangle is located along the South Platte River 
      corridor on the semiarid plains of eastern Colorado, and contains 
      surficial deposits that record alluvial, eolian, and hillslope processes 
      that have operated in concert with environmental changes from Pleistocene 
      to present time.  The South Platte River, originating high in the 
      Colorado Front Range, has played a major role in shaping the surficial 
      geology of the quadrangle, which is situated downstream of where the last 
      of the major headwater tributaries (St. Vrain, Big Thompson, and Cache 
      la Poudre) join the river.  Recurrent glaciation (and deglaciation) of 
      basin headwaters affected river discharge and sediment supply far 
      downstream, influencing deposition of alluvium and terrace formation in 
      the Masters quadrangle.  Kiowa and Bijou Creeks, unglaciated tributaries 
      originating in the Colorado Piedmont east of the Front Range and joining 
      the South Platte River just downstream of the Masters quadrangle, also 
      have played a major role by periodically delivering large volumes of 
      sediment to the river during flood events, which may have temporarily 
      dammed the river.  Eolian sand deposits of the Greeley (north of river) 
      and Fort Morgan (south of river) dune fields cover much of the quadrangle 
      and record past episodes of sand mobilization during times of prolonged 
      drought.  With the onset of irrigation and damming during historical 
      times, the South Platte River has changed from a broad, shallow sandy 
      braided river with highly seasonal discharge to a much narrower, deeper 
      river with braided-meandering transition morphology and more uniform 
      discharge.  Along the reach of river in the Masters quadrangle, the river 
      has incised into Upper Cretaceous Pierre Shale, which, although buried by 
      alluvial deposits here, is locally exposed downstream along the South 
      Platte River bluff near the Bijou Creek confluence, in some of the 
      larger draws, and along Wildcat Creek.  

    Purpose:
      To provide a geologic map database showing the distribution of fluvial, 
      eolian, and hillslope deposits along the South Platte River corridor 
      in the Masters, Colorado area, to better understand past geomorphic 
      system response to environmental change and the geologic framework of 
      South Platte River corridor ecosystems.

    Supplemental_Information:
      Map political location: Weld and Morgan Counties, Colorado 
      Compilation scale: 1:24,000
      Base map used is the U.S. Geological Survey 7.5’ topographic
      quadrangle for Masters, Colorado

  Time_Period_of_Content:
    Time_Period_Information:
      Single_Date/Time:
        Calendar_Date: 2015
    Currentness_Reference: publication date

  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: none currently planned
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -104.25000
      East_Bounding_Coordinate: -104.12500
      North_Bounding_Coordinate: 40.37500
      South_Bounding_Coordinate: 40.25000

  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: AGI Glossary of Geology
      Theme_Keyword: alluvium
      Theme_Keyword: argillic B horizon
      Theme_Keyword: braided
      Theme_Keyword: colluvium
      Theme_Keyword: discharge
      Theme_Keyword: eolian
      Theme_Keyword: floodplain
      Theme_Keyword: geologic map
      Theme_Keyword: lignite
      Theme_Keyword: optically stimulated luminescence
      Theme_Keyword: meandering
      Theme_Keyword: paleochannel
      Theme_Keyword: parabolic dune
      Theme_Keyword: quartzite
      Theme_Keyword: radiocarbon
      Theme_Keyword: sand sheet
      Theme_Keyword: sheetflood
      Theme_Keyword: soil
      Theme_Keyword: terrace
      Theme_Keyword: U-series dating

    Place:
      Place_Keyword_Thesaurus:
        U.S. Board of Geographic Names (BGN) Geographic
        Names Information System (GNIS)
      Place_Keyword: USA
      Place_Keyword: United States
      Place_Keyword: Colorado
      Place_Keyword: Morgan County
      Place_Keyword: Weld County
      Place_Keyword: Bijou Creek
      Place_Keyword: Bijou Reservoir
      Place_Keyword: Empire Reservoir
      Place_Keyword: Fort Morgan
      Place_Keyword: Front Range
      Place_Keyword: Greeley
      Place_Keyword: Green City Flats
      Place_Keyword: Jackson Reservoir
      Place_Keyword: Kersey
      Place_Keyword: Kiowa Creek
      Place_Keyword: Kuner
      Place_Keyword: Masters
      Place_Keyword: Milliron Draw
      Place_Keyword: Orchard
      Place_Keyword: Riverside Reservoir
      Place_Keyword: South Platte River
      Place_Keyword: Weldona
      Place_Keyword: Wildcat Creek

    Stratum:
      Stratum_Keyword_Thesaurus:
        National Geologic Map Database Geologic Names Lexicon 
        (http://ngmdb.usgs.gov/Geolex/geolex_home.html)
      Stratum_Keyword:  Broadway Alluvium
      Stratum_Keyword:  Bull Lake glaciation
      Stratum_Keyword:  Laramie Formation
      Stratum_Keyword:  Louviers Alluvium
      Stratum_Keyword:  Pierre Shale
      Stratum_Keyword:  Pinedale glaciation
      Stratum_Keyword:  Piney Creek Alluvium
      Stratum_Keyword:  Rocky Flats Alluvium
      Stratum_Keyword:  Slocum Alluvium

    Temporal:
      Temporal_Keyword_Thesaurus:  
        International Commission on Stratigraphy (http://www.stratigraphy.org)
      Temporal_Keyword:  Cretaceous
      Temporal_Keyword:  Holocene
      Temporal_Keyword:  Pleistocene
      Temporal_Keyword:  Quaternary

  Access_Constraints: none

  Use_Constraints:
    Users of this geospatial database and geologic
    information derived there from should acknowledge the U.S. Geological
    Survey as the source of the data.  Although software enables a user 
    to display images at various scales, map data in this report should
    not be used at scales greater than 1:24,000.

  Point_of_Contact:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Margaret E. Berry 
        Contact_Organization: U.S. Geological Survey
      Contact_Address:
        Address_Type: mailing
        Address: P.O. Box 25046, MS 980
        Address: Denver Federal Center
        City: Denver
        State_or_Province: CO
        Postal_Code: 80225-0046
        Country: USA
      Contact_Voice_Telephone: 303-236-1240
      Contact_Electronic_Mail_Address: meberry@usgs.gov

  Browse_Graphic:
    Browse_Graphic_File_Name: http://dx.doi.org/10.3133/sim3344_map.pdf/
    Browse_Graphic_File_Description: graphic representation of map layout
    Browse_Graphic_File_Type: PDF

  Data_Set_Credit:
    Theodore R. Brandt, U.S. Geological Survey, served as primary author
    of the GIS database.  Thomas W. Judkins, U.S. Geological Survey, performed 
    the Geologic Names Review.

  Native_Data_Set_Environment:
    Windows_7, Intel
    ArcGIS version 10.2.2

Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report:
      Data were entered and checked by the geologist that made the field 
      observations. The attributes of this geospatial data set consist of 
      text identifiers and numeric codes that indicate the identity of 
      the geologic unit or type of geologic feature, and determine how 
      each feature is colored or symbolized. To check attribute accuracy, 
      a color check plot was visually compared to the geologist's 
      original compilation. Discrepancies between the digital geospatial 
      dataset and the original analog or digital compilation were 
      corrected as needed.  Machine-created listings of unique attribute 
      values were used to identify spelling errors or other 
      inconsistencies, and corrections were made as needed.

  Logical_Consistency_Report:
    Map elements were visually checked for overshoots, undershoots, 
    duplicate features, polygon closure, and other errors by the
    lead author and by the GIS technician(s) that created the digital 
    database.  Automated (ArcInfo) routines were also used to check the 
    databases for polygon label errors, line or point attribution errors, 
    sliver polygons, dangling arcs, intersection errors, and projection 
    information. Check plots of the map were reviewed by at least one 
    other geologist for consistency with basic geologic principles and 
    general conformity to USGS mapping standards.

  Completeness_Report:
    Data are complete: no features that could be accurately
    represented at the compilation scale of 1:24,000 were eliminated or
    generalized. The smallest area represented is approximately 500 square
    meters. All geospatial database elements are attributed.

  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report:
        Most digitized positions on the map that depict distinct contacts
        between rock formations in the field are estimated to be within
        20 m of the actual contact on the land in most instances.  
        Boundaries (lines) between Quaternary units (for example, terrace 
        gravels) that correspond closely to distinct edges of landforms 
        (for example, river terraces) are of comparable accuracy.  
        Boundaries (lines) between some Quaternary units, such as eolian 
        deposits and broad alluvial aprons, are approximately located 
        within an indefinite gradational zone between them.  Horizontal 
        positional accuracy is tested by visual comparison of hard copy 
        test plots to source maps or comparing locations of data on a 
        computer monitor to other data layers in the same geographic 
        area.  The database contains no elevation data.  Accuracy of 
        these digital data indirectly depends on accuracy of the base 
        maps on which the original source geologic maps were compiled.
        These base maps were made by the U.S. Geological Survey, which
        routinely checks them for compliance with the National Map 
        Accuracy Standards.

  Lineage:
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Lewis, R. S.
          Originator: Derkey, P. D.
          Title:
            Digital geologic map of part of the Thompson Falls 1:100,000
            quadrangle, Idaho
          Publication_Date: 1999
          Series_Information:
            Series_Name: U.S. Geological Survey Open File Report
            Issue_Identification: OFR 99-438
      Source_Scale_Denominator: 100000
      Type_of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1999
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: Lewis and Derkey (1999)
      Source_Contribution: GIS database structure source

    Process_Step:
      Process_Description: Geologic mapping builds off previous mapping 
        of nearby quadrangles by Gardner, M.E., 1967, Quaternary and 
        engineering geology of the Orchard, Weldona, and Fort Morgan 
        quadrangles, Morgan County, Colorado:  Ph.D. dissertation, Colorado 
        School of Mines, Golden, 224 p.
      Process_Date: 2015

    Process_Step:
      Process_Description: Digital geologic map presented here was completed 
        using a combination of field investigation, geochronologic research, 
        and interpretation of the following:  stereoscopic pairs of National 
        Aerial Photography Program (NAPP) color-infrared (1988, 1:40,000 scale), 
        and historical black and white (1948, 1:39,230 scale; 1949, 1:16,620 scale) 
        aerial photographs; National Agriculture Imagery Program (NAIP) ortho 
        imagery (U.S. Department of Agriculture Farm Service Agency Aerial 
        Photography Field Office, 2009, 2011, 2013); topographic and digital 
        elevation (DEM) data; digital soil survey data (U.S. Department 
        of Agriculture Natural Resources Conservation Service, 2009a; 2009b); 
        Google Earth imagery; Federal Emergency Management Agency (1989) flood 
        maps (1:19,200 approximate scale); and subsurface lithologic data from 
        test holes and water wells (Bjorklund and Brown, 1957; Colorado Division 
        of Water Resources, 2013).
      Process_Date: 2015

    Process_Step:
      Process_Description: Field mapping and research were conducted between 
        2011 and 2013.  Digital mapping using ArcMap software was done 
        initially on NAIP ortho imagery taken in 2009 and later refined using 
        imagery taken in 2011 and 2013; location and dimensions of the South 
        Platte River and other water bodies shown on this map are based on the 
        2013 imagery.  The topographic base is somewhat out of date particularly 
        with regard to locations of channel banks of the South Platte River, 
        low terrace scarps on the valley floor, shorelines along reservoirs, 
        and dune crests in areas where center-pivot irrigation or other 
        agricultural practices have been introduced.  Therefore, geologic 
        mapping of young fluvial features, shoreline deposits, and dune crests 
        also is based on the NAIP imagery.  Dunes outside of cultivated areas 
        are mostly stabilized by sandsage prairie vegetation (Chapman and others, 
        2006), and dune form is no longer distinct in many places due to 
        degradation by hillslope processes and the grazing of livestock; dune 
        crests (for simple parabolic dunes and for individual dunes within 
        compound parabolic dunes) were only mapped where clearly visible in the 
        NAIP imagery and therefore were only mapped for a portion of the dunes 
        within the dune fields.  All field mapping and all imagery used for 
        mapping predate the large-magnitude flood on the South Platte River that 
        took place during mid-September, 2013.  
      Process_Date: 2015

    Process_Step:
      Process_Description: The geology was mapped by M.E. Berry from 2011-2013.  
        J.L. Slate assisted with OSL and 14C sampling and stratigraphic descriptions.  
        J.B. Paces processed and analyzed samples for U-series analyses, made 
        230Th/U age determinations, and wrote companion-file report on the ages.  
        P.R. Hanson processed and analyzed OSL samples and generated OSL age 
        estimates.
      Process_Date: 2015

    Process_Step:
      Process_Description: Metadata created by T.R. Brandt.
      Process_Date: 2015

    Process_Step:
      Process_Description: Metadata reviewed and revised by T.R. Brandt.
      Process_Date: 2015

Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Vector

Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Planar:
      Planar_Coordinate_Information:
        Planar_Coordinate_Encoding_Method: coordinate pair
        Coordinate_Representation:
          Abscissa_Resolution: 5
          Ordinate_Resolution: 5
        Planar_Distance_Units: METERS
      Grid_Coordinate_System:
        Grid_Coordinate_System_Name: Universal Transverse Mercator
        Universal_Transverse_Mercator:
          UTM_Zone_Number: 13
          Transverse_Mercator:
            Scale_Factor_at_Central_Meridian: .9996
            Longitude_of_Central_Meridian: -105.0000
            Latitude_of_Projection_Origin: 0.00
            False_Easting: 500000.0000
            False_Northing: 0.0000
    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:
      The data are supplied in ArcInfo export format, ArcView shapefile
      format, and ArcGIS geodatabase format.
      DATABASE STRUCTURE - ArcInfo ====================================
      This GIS database includes related look-up tables, which store
      detailed attribute information.  This database structure is more 
      fully described in USGS OFR 99-438 (Lewis and Derkey, 1999).  The 
      GIS database structure used in the database includes symbol 
      and pattern items in coverage point, polygon (PAT), and arc 
      (AAT) attribute tables for user convenience.  ArcInfo relates for 
      each coverage are saved in a file named <covername>.rel.  Use the 
      RELATE command with the restore argument at the arc prompt to make 
      the relates active.  Alternatively, in ArcTools, use the Relate 
      environment: open dialog in the Manage Relates flyout menu under 
      the ArcTools menu to make the relates active.

      mastgeo coverage:  Contains all contact lines and label points for 
      each geologic polygon.  In the .pat INFO file the SOURCE item 
      provides a numeric code used to identify the data source for the 
      rock unit.  Complete references for the sources listed are listed 
      in the mastgeo.ref file.  The LABEL item indicates the rock unit 
      label (abbreviation) used to label unit on map.  
      The DESC item defines formal or informal unit name.  The SYMBOL 
      item contains the shadeset symbol number used by ArcInfo to plot a 
      filled/shaded polygon.  The symbol numbers in this item refer to 
      the wpgcmykg.shd shadeset included with the dataset.  The PATTERN 
      item contains the pattern number used in the published version of 
      the map.  Patterns that correspond with the pattern numbers are 
      displayed in Federal Geographic Data Committee document no. FGDC-
      STD-013-2006, rev. 2010.  There is no ArcInfo shadeset that 
      corresponds to these patterns.

      In the mastgeo.aat INFO file, the LINECODE item provides a numeric 
      Code used to identify type of linear feature.  Linecodes less than 
      100 are used for contacts and boundaries that are described in the 
      mastgeo.con file.  The NAME item lists the name given to the 
      structural feature.  The SOURCE item lists the numeric code used to 
      identify the data source for the linear feature.  The SYMBOL item 
      lists the line symbol number used by ArcInfo to plot the line (symbol 
      numbers refer to the geol_sfo.lin lineset).  Complete references for 
      the sources are listed in the mastgeo.ref file.  Related look-up table 
      files are mastgeo.con, and mastgeo.ref.  In the mastgeo.con 
      INFO file, the LINECODE item indicates the numeric code (a value 
      less than 100) used to identify type of contact or boundary.  The 
      SYMBOL item lists the line symbol number used by ArcInfo to plot 
      the line (symbol numbers refer to the geol_sfo.lin lineset included 
      with the dataset).  The TYPE item lists the major type of line (for 
      example, contact, State boundaries, lines of latitude and longitude 
      used for neatlines).  The MODIFIER item lists the line type 
      modifier (that is, approximate, concealed, or gradational).  No 
      entry implies 'known.'  The CERTAINTY item lists the degree of 
      certainty of contact or boundary (that is, inferred or uncertain).  
      No entry implies 'certain.'  The DESC item lists the 
      written description or explanation of the contact or boundary.  

      The INFO structure of these files is listed below:
      >MASTGEO.PAT:
      >
      >COLUMN   ITEM NAME           WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
      >    1    AREA                   8    18     F      5
      >    9    PERIMETER              8    18     F      5
      >   17    MASTGEO#               4     5     B      -
      >   21    MASTGEO-ID             4     5     B      -
      >   25    SOURCE                 2     5     B      -
      >   27    LABEL                 10    10     C      -
      >   37    DESC                 150   150     C      -
      >  187    SYMBOL                 2     5     B      -
      >  189    PATTERN                2     5     B      -

      >MASTGEO.AAT:
      >
      >COLUMN   ITEM NAME           WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
      >    1    FNODE#                 4     5     B      -
      >    5    TNODE#                 4     5     B      -
      >    9    LPOLY#                 4     5     B      -
      >   13    RPOLY#                 4     5     B      -
      >   17    LENGTH                 8    18     F      5
      >   25    MASTGEO#               4     5     B      -
      >   29    MASTGEO-ID             4     5     B      -
      >   33    LINECODE               2     5     B      -
      >   35    NAME                 150   150     C      -
      >  185    SOURCE                 2     5     B      -
      >  187    SYMBOL                 2     5     B      -

      >MASTGEO.CON:
      >
      >COLUMN   ITEM NAME           WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
      >    1    LINECODE               3     3     I      -
      >    4    SYMBOL                 3     3     I      -
      >    7    TYPE                  10    10     C      -
      >   17    MODIFIER              20    20     C      -
      >   37    CERTAINTY             15    15     C      -
      >   52    DESC                 100   100     C      -

      >MASTGEO.STR:
      >
      >COLUMN   ITEM NAME           WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
      >    1    LINECODE               3     3     I      -
      >    4    SYMBOL                 3     3     I      -
      >    7    TYPE                  10    10     C      -
      >   17    HORIZONTAL            20    20     C      -
      >   37    VERTICAL              20    20     C      -
      >   57    FOLD                  15    15     C      -
      >   72    PLUNGE                15    15     C      -
      >   87    ACCURACY              15    15     C      -
      >  102    CERTAINTY             15    15     C      -
      >  117    DESC                 100   100     C      -

      > MASTGEO.REF:
      >
      >COLUMN   ITEM NAME           WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
      >    1    SOURCE                 4     4     I      -
      >    5    SCALE                  8     8     I      -
      >   13    AUTHORS              200   200     C      -
      >  213    YEAR                   4     4     I      -
      >  217    REFERENCE            250   250     C      -

      macrests coverage:  Contains dune crest lines

      In the macrests.aat INFO file, the LINECODE item provides a numeric code 
        used to identify type of linear feature.  Linecodes less than 100 are 
        used for contacts and boundaries that are described in the macrests.con 
        file.  The NAME item lists the name given to the linear feature.  The 
        SOURCE item lists the numeric code used to identify the data source for 
        the linear feature.  The SYMBOL item lists the line symbol number used 
        by ArcInfo to plot the line (symbol numbers refer to the geol_sfo.lin 
        lineset).  Complete references for the sources are listed in the 
        macrests.ref file.  Related look-up table files are macrests.con and 
        macrests.ref.  In the macrests.con INFO file, the LINECODE item indicates 
        the numeric code (a value less than 100) used to identify type of 
        contact or boundary.  The SYMBOL item lists the line symbol number used 
        by ArcInfo to plot the line (symbol numbers refer to the geol_sfo.lin 
        lineset included with the dataset).  The TYPE item lists the major type 
        of line (for example, contact, State boundaries, lines of latitude and 
        longitude used for neatlines).  The MODIFIER item lists the line type 
        modifier (that is, approximate, concealed, or gradational).  No entry 
        implies 'known.'  The CERTAINTY item lists the degree of certainty of 
        contact or boundary (that is, inferred or uncertain).  No entry implies 
        'certain.'  The DESC item lists the written description or explanation 
        of the contact or boundary.

      >MACRESTS.AAT:
      >
      >COLUMN   ITEM NAME           WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
      >    1    FNODE#                 4     5     B      -
      >    5    TNODE#                 4     5     B      -
      >    9    LPOLY#                 4     5     B      -
      >   13    RPOLY#                 4     5     B      -
      >   17    LENGTH                 8    18     F      5
      >   25    MASTGEO#               4     5     B      -
      >   29    MASTGEO-ID             4     5     B      -
      >   33    LINECODE               2     5     B      -
      >   35    NAME                 150   150     C      -
      >  185    SOURCE                 2     5     B      -
      >  187    SYMBOL                 2     5     B      -
      >
      >MACRESTS.CON:
      >
      >COLUMN   ITEM NAME           WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
      >    1    LINECODE               3     3     I      -
      >    4    SYMBOL                 3     3     I      -
      >    7    TYPE                  10    10     C      -
      >   17    MODIFIER              20    20     C      -
      >   37    CERTAINTY             15    15     C      -
      >   52    DESC                 100   100     C      -
      >
      >MACRESTS.REF:
      >
      >COLUMN   ITEM NAME           WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
      >    1    SOURCE                 4     4     I      -
      >    5    SCALE                  8     8     I      -
      >   13    AUTHORS              200   200     C      -
      >  213    YEAR                   4     4     I      -
      >  217    REFERENCE            250   250     C      -

      maxc coverage:  Contains geologic cross-section lines

      In the maxc.aat INFO file, the LINECODE item provides a numeric code 
        used to identify type of linear feature.  Linecodes less than 100 are 
        used for contacts and boundaries that are described in the maxc.con 
        file.  The NAME item lists the name given to the linear feature.  The 
        SOURCE item lists the numeric code used to identify the data source for 
        the linear feature.  The SYMBOL item lists the line symbol number used 
        by ArcInfo to plot the line (symbol numbers refer to the geol_sfo.lin 
        lineset).  Complete references for the sources are listed in the 
        maxc.ref file.  Related look-up table files are maxc.con and 
        maxc.ref.  In the maxc.con INFO file, the LINECODE item indicates 
        the numeric code (a value less than 100) used to identify type of 
        contact or boundary.  The SYMBOL item lists the line symbol number used 
        by ArcInfo to plot the line (symbol numbers refer to the geol_sfo.lin 
        lineset included with the dataset).  The TYPE item lists the major type 
        of line (for example, contact, State boundaries, lines of latitude and 
        longitude used for neatlines).  The MODIFIER item lists the line type 
        modifier (that is, approximate, concealed, or gradational).  No entry 
        implies 'known.'  The CERTAINTY item lists the degree of certainty of 
        contact or boundary (that is, inferred or uncertain).  No entry implies 
        'certain.'  The DESC item lists the written description or explanation 
        of the contact or boundary.

      >MAXC.AAT:
      >
      >COLUMN   ITEM NAME           WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
      >    1    FNODE#                 4     5     B      -
      >    5    TNODE#                 4     5     B      -
      >    9    LPOLY#                 4     5     B      -
      >   13    RPOLY#                 4     5     B      -
      >   17    LENGTH                 8    18     F      5
      >   25    MASTGEO#               4     5     B      -
      >   29    MASTGEO-ID             4     5     B      -
      >   33    LINECODE               2     5     B      -
      >   35    NAME                 150   150     C      -
      >  185    SOURCE                 2     5     B      -
      >  187    SYMBOL                 2     5     B      -
      >
      >MAXC.CON:
      >
      >COLUMN   ITEM NAME           WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
      >    1    LINECODE               3     3     I      -
      >    4    SYMBOL                 3     3     I      -
      >    7    TYPE                  10    10     C      -
      >   17    MODIFIER              20    20     C      -
      >   37    CERTAINTY             15    15     C      -
      >   52    DESC                 100   100     C      -
      >
      >MAXC.REF:
      >
      >COLUMN   ITEM NAME           WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
      >    1    SOURCE                 4     4     I      -
      >    5    SCALE                  8     8     I      -
      >   13    AUTHORS              200   200     C      -
      >  213    YEAR                   4     4     I      -
      >  217    REFERENCE            250   250     C      -

      mathupts coverage:  Contains points recording site-specific 
      observations and measurements of the location of optically
      stimulated luminescence dated sediment and 230Th/U dated
      samples.

      In the mathupts.pat INFO file, the PTTYPE item lists the type of 
      Point symbol (for example, strike and dip of inclined bedding).  
      The SYMBOL item lists the marker symbol used by ArcInfo to identify 
      the type of structural map symbol(symbol numbers refer to the 
      geoscamp2.mrk markerset).  The SAMPLENO item contains the sample 
      number/station ID of dated samples.  The FIELDNO item contains 
      the field number of dated samples.  The SOURCE item lists the 
      numeric code used to identify the data source.  In the mathupts.ref 
      INFO file, the SOURCE item lists the numeric code used to identify 
      the data source.  The SCALE item lists the scale of the source map.  
      (This value is the denominator of the proportional fraction that 
      identifies the scale of the map that was digitized or scanned to 
      produce the digital map.)  The AUTHORS item lists the author(s) or 
      compiler(s) of source map entered as last name, first name or 
      initial, and middle initial.  The YEAR item lists the source (map) 
      publication date.  The REFERENCE item lists the remainder
      of the reference in USGS reference format.

      >COLUMN   ITEM NAME           WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
      >    1    AREA                   8    18     F      5
      >    9    PERIMETER              8    18     F      5
      >   17    MATHUPTS#              4     5     B      -
      >   21    MATHUPTS-ID            4     5     B      -
      >   25    PTTYPE               100   100     C      -
      >  125    SAMPLENO             100   100     C      -
      >  225    FIELDNO              100   100     C      -
      >  325    SYMBOL                 2     5     B      -
      >  327    SOURCE                 2     5     B      -
      >
      >MATHUPTS.REF:
      >
      >COLUMN   ITEM NAME           WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
      >    1    SOURCE                 4     4     I      -
      >    5    SCALE                  8     8     I      -
      >   13    AUTHORS              200   200     C      -
      >  213    YEAR                   4     4     I      -
      >  217    REFERENCE            250   250     C      -

      >Coding of LABEL and DESC attributes in the mastgeo coverage:
      >LABEL    |    DESC
      >af       |    Artificial fill (latest Holocene)
      >Qa1      |    Young alluvium 1 (late Holocene)
      >Qa2      |    Young alluvium 2 (late Holocene)
      >Qa3      |    Young alluvium 3 (Holocene and latest Pleistocene?)
      >Qaa      |    Active channel and floodplain alluvium (late 
                       Holocene)
      >Qai      |    Intermediate alluvium (middle Pleistocene)
      >Qao      |    Old alluvium (early Pleistocene)
      >Qba      |    Mainstream deposits of Broadway Alluvium (late 
                       Pleistocene)
      >Qbs      |    Sidestream deposits of Broadway Alluvium (late 
                       Pleistocene)
      >Qes      |    Eolian sand (Holocene and late Pleistocene)
      >Qfc      |    Fan alluvium and hillslope colluvium (Holocene)
      >Qsh      |    Shoreline deposits (latest Holocene)
      >w        |    Open water
      >wl       |    Intermittent wetlands and ponds

      >Coding of LINECODE and NAME attributes in the mastgeo coverage:
      >LINECODE     |    NAME
      >1            |    Contact - Certain
      >2            |    Contact - Approximately located
      >5            |    Boundary of patterned area
      >41           |    Shoreline
      >81           |    Map boundary

      >Coding of LINECODE and NAME attributes in the macrests coverage:
      >LINECODE     |    NAME
      >85           |    Dune crest

      >Coding of LINECODE and NAME attributes in the maxc coverage:
      >LINECODE     |    NAME
      >98           |    Cross-section line A-A’

      >Coding of PTTYPE attributes in the mathupts coverage:
      >PTTYPE
      > Optically stimulated luminescence sample locality 
      > 230Th/U sample locality 

      Auxiliary files:

      geol_sfo.lin:  This lineset file defines geologic line types in the
      geologically themed coverages.
      geoscamp2.mrk:  This markerset file defines the geologic markers in 
      the geologically themed coverages.
      wpgcmykg.shd:  This shadeset file defines the cmyk values of colors
      assigned to polygons in the geologically themed coverages.
      3344_map.pdf:  A print optimized file for viewing and printing a 
      graphics version of the map and accessory elements using Adobe 
      Acrobat viewing software (version 11.0).  (Adobe Acrobat viewing 
      software is free and can be downloaded at the following URL:
      http://get.adobe.com/reader/

    Entity_and_Attribute_Detail_Citation: http://wrgis.wr.usgs.gov/open-file/of99-438/

Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
      Contact_Address:
        Address_Type: mailing address
        Address: USGS Information Services
        Address: Box 25286
        Address: Denver Federal Center
        City: Denver
        State_or_Province: CO
        Postal_Code: 80225-0046
      Contact_Voice_Telephone: 1-(888)-ASK-USGS
      Contact_Electronic_Mail_Address: http//answers.usgs.gov; usgsstores@usgs.gov
  Resource_Description: Scientific Investigations Map 3344
  Distribution_Liability:
    This database, identified as SIM 3344, has been approved for release and 
    publication by the U.S. Geological Survey.  Although this database has 
    been subjected to rigorous review and is substantially complete, the 
    USGS reserves the right to revise the data pursuant to further analysis 
    and review.  Furthermore, it is released on condition that neither the 
    USGS nor the U.S. Government may be held liable for any damages resulting 
    from its authorized or unauthorized use.

    Although these data have been processed successfully on a computer 
    System at the U.S. Geological Survey (USGS), no warranty, expressed or 
    implied is made regarding the display or utility of the data on any 
    other system, or for general or scientific purposes, nor shall the act 
    of distribution constitute any such warranty.  The USGS shall not be held 
    liable for improper or incorrect use of the data described and/or contained 
    herein.

    Although this information product, for the most part, is in the public
    domain, it also contains copyrighted material as noted in the text.
    Permission to reproduce copyrighted items must be secured from the 
    copyright owner.

  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: ARCE,SHP,GDB
        Format_Version_Number: 10.2.2
        Format_Version_Date: 2014
        File_Decompression_Technique:
          In Windows, use WinZip
          (http://www.winzip.com/) or other programs to extract the file.
      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name: http://dx.doi.org/10.3133/sim3344/
    Fees: none

Metadata_Reference_Information:
  Metadata_Date: 2015
  Metadata_Review_Date: 2015
  Metadata_Contact:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Theodore Brandt
        Contact_Organization: U.S. Geological Survey
      Contact_Address:
        Address_Type: mailing address
        Address: U.S. Geological Survey
        Address: MS 980, Box 25046 Denver Federal Center
        City: Denver
        State_or_Province: CO
        Postal_Code: 80225-0046
      Contact_Voice_Telephone: 303-236-1901
  Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998