Identification_Information:
  Citation:
    Citation_Information:
      Originator: Mitchell W. Reynolds
      Publication_Date: 2003
      Title: Geologic Map of the Hogback Mountain Quadrangle, Lewis and Clark and Meagher Counties, Montana
      Edition: Version 1.0
      Geospatial_Data_Presentation_Form: map
      Series_Information:
        Series_Name: USGS Geologic Investigations Series
        Issue_Identification: I-2773
      Publication_Information:
        Publication_Place: Denver, Colorado
        Publisher: U.S. Geological Survey
      Online_Linkage: http://pubs.usgs.gov/imap/2003/i-2773/

  Description:
    Abstract:
      The geologic map of the Hogback Mountain quadrangle, scale 1:24,000, was made as part of the Montana Investigations Project to provide new information on the stratigraphy, structure, and geologic history of an area in the geologically complex southern part of the Montana disturbed belt.  In the Hogback Mountain area, rocks ranging in age from Middle Proterozoic through Cretaceous are strongly folded within and under thrust plates of equivalent rocks.  Continental rocks of successive thrust plates have been telescoped eastward over a buttress of the stable continent.  Erosional remnants of Oligocene andesitic basalt lie on highest surfaces eroded across the strongly deformed older rocks; younger erosion has dissected the terrain deeply, producing Late Tertiary and Quaternary deposits of alluvium, colluvium, and local landslide debris in the valleys and canyons.
      Different stratigraphic successions are exposed at different structural levels across the quadrangle.  In the northeastern part of the quadrangle at the lowest structural level, rocks of the Upper Mississippian Big Snowy Group, including the Kibbey Formation and the undivided Otter and Heath Formations, the overlying Pennsylvanian Amsden and undivided Quadrant and Phosphoria Formations, the Ellis Group, and the Kootenai Formation, are folded and broken by thrust faults.  The next higher structural level, the Avalanche Butte thrust plate, exposes strongly folded and, in places, attenuated strata of Cambrian (Flathead Sandstone, Wolsey Shale, Meagher Limestone, and undivided Pilgrim Formation and Park Shale), Devonian (Maywood Formation, Jefferson Formation, and most of the Three Forks Formation), and Mississippian (uppermost part of the Three Forks Formation and Lodgepole and Mission Canyon Limestones) ages.  The overlying Hogback Mountain thrust plate contains strongly folded rocks ranging in age from the Middle Proterozoic Greyson Formation to the Upper and Lower Mississippian Mission Canyon Limestone and Cretaceous diorite sills.  The highest structural level, the Moors Mountain thrust plate, contains the Middle Proterozoic Greyson and Newland Formations and discontinuous Upper Proterozoic diabase sills.
      Rocks are complexly folded and faulted across the quadrangle.  At the lowest level in the northeastern part of the quadrangle, Upper Mississippian and younger strata are folded along northwest-trending axes and broken by thrust faults that at outcrop level displace the same rocks.  The central core of the quadrangle is formed by the Avalanche Butte thrust plate, which contains recumbently folded and thrust faulted Paleozoic rocks.  A succession of four tight recumbent folds within the plate have axial traces that trend northwest and north-northwest, and that are both arched and downfolded along east- and northeast-trending axes.  Carbonate rocks of the Mission Canyon and Lodgepole Limestones in the upper part of the Avalanche Butte thrust plate exposed in the canyon of Trout Creek are folded and attenuated in stacked east-directed recumbent folds that developed as a succession of folded duplex thrust slices.  The exposed remnant of the next higher structural level, the Hogback Mountain thrust plate, contains northeast- and east-trending folds that are inverted on the upper overturned limb of a younger northwest-trending recumbent fold.  The Hogback Mountain thrust fault is itself folded and, in its northernmost exposures, is overturned to dip west beneath the overlying Moors Mountain thrust plate.  During post-middle Tertiary deformation, the Hogback Mountain thrust fault moved as a normal fault, down on the east.  The structurally highest Moors Mountain thrust plate rests on the Avalanche Butte thrust plate in the southwestern part of the quadrangle and across both the Avalanche Butte and Hogback Mountain thrust plates along the northwest edge of the quadrangle.  In the central eastern part of the map area, the edge of a large klippen of the Moors Mountain thrust plate rests on a major inverted syncline of the underlying Hogback Mountain thrust plate.  At the base of both the contiguous thrust plate and its klippen, the bounding Moors Mountain thrust fault ramps steeply upward from south to north across a structural culmination in underlying thrust plates.
      In the southwest corner of the quadrangle, strata of the Greyson Formation are faulted down on the west along a normal fault that, in the Nelson quadrangle adjacent on the west, is listric down to the west with the Moors Mountain thrust fault.  Movement on the normal fault is younger than middle Oligocene.

    Purpose: The geologic map of the Hogback Mountain quadrangle provides new geologic information for public use and for use by governmental agencies for land-use planning, including assessment of natural resources, natural hazards, and recreational potential, and for land-use management.  The map provides an interpretation of the complex geology and terrain to recreationalists using the Gates of the Mountains Wilderness.  The map provides data for scientific interpretation of the geology of part of the south end of the Montana disturbed belt.

    Supplemental_Information:
      Map political location: Lewis and Clark and Meagher Counties, Montana
      Map scale: 1:24,000
      Geology mapped in 1976 and 1977
      Any use of trade, product, or  firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
      Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in ARC/INFO format, this metadata file may include some ARC/INFO-specific terminology.

      GEOSPATIAL FILES INCLUDED IN THIS DATA SET:

      hogpoly:  polygon coverage containing geologic unit contacts, faults, dikes, and labels
      hogline:  arc coverage containing cross sections, anticlines, synclines
      hogpoint:  point coverage containing strike and dip attitudes of bedding and foliation, and other point-data map entities

  Time_Period_of_Content:
    Time_Period_Information:
      Single_Date/Time:
        Calendar_Date: 2003
    Currentness_Reference: publication date

  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: None planned

  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -111.750
      East_Bounding_Coordinate: -111.625
      North_Bounding_Coordinate: 46.875
      South_Bounding_Coordinate: 46.750

  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: American Geologic Institute (AGI) Glossary of Geology
      Theme_Keyword: Montana disturbed belt
      Theme_Keyword: Lewis and Clark line
      Theme_Keyword: thrust fault
      Theme_Keyword: thrust plate
      Theme_Keyword: recumbent fold
      Theme_Keyword: klippen
      Theme_Keyword: strike-slip fault
      Theme_Keyword: inverted fold
      Theme_Keyword: detachment zone
      Theme_Keyword: Moors Mountain thrust fault
      Theme_Keyword: Moors Mountain thrust plate
      Theme_Keyword: Hogback Mountain thrust fault
      Theme_Keyword: Hogback Mountain thrust plate
      Theme_Keyword: Avalanche Butte thrust plate

    Place:
      Place_Keyword_Thesaurus: U.S. Board of Geographic Names (BGN) Geographic Names Information System (GNIS)
      Place_Keyword: USA
      Place_Keyword: Montana
      Place_Keyword: Lewis and Clark County
      Place_Keyword: Meagher County
      Place_Keyword: Big Belt Mountains
      Place_Keyword: Gates of the Mountains Wilderness
      Place_Keyword: Hogback Mountain
      Place_Keyword: Middleman Mountain
      Place_Keyword: Beaver Creek Big Belt Mountains
      Place_Keyword: Trout Creek Big Belt Mountains
      Place_Keyword: Getty Oil Company No. 3-10 Federal Hogback Mountain drill hole

  Access_Constraints: none

  Use_Constraints: None.  However, citation of publication reference and acknowledgment of the U.S. Geological Survey would be appreciated in all products that use or are derived from these data.  These data should not be used at scales larger than 1:24,000.

  Point_of_Contact:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Mitchell W. Reynolds
        Contact_Organization: U.S. Geological Survey
      Contact_Address:
        Address_Type: mailing address
        Address: P.O. Box 25046 Federal Center, MS 913
        City: Denver
        State_or_Province: CO
        Postal_Code: 80225-0046
        Country: USA
      Contact_Voice_Telephone: 303-236-8007
      Contact_Facsimile_Telephone: 303-236-5349
      Contact_Electronic_Mail_Address: mwreynol@usgs.gov

  Data_Set_Credit: Radiometric dating of samples from adjacent areas applicable to this quadrangle was performed by Harald H. Mehnert, U.S. Geological Survey.  Technical reviews by Karl K. Kellogg and David A. Lindsey, U.S. Geological Survey, helped improve the quality of the geologic map, illustrations, and text.  Sharon A. Smith graciously and painstakingly translated the map data into digital files.  Carlos Vulgamott made preliminary digital copy of the map and cross sections.

  Native_Data_Set_Environment: SunOS, 5.7, sun4d UNIX ARC/INFO version 8.0.2

  Browse_Graphic:
    Browse_Graphic_File_Name: <http://pubs.usgs.gov/imap/2003/i-2773/i-2773.pdf>
    Browse_Graphic_File_Description: graphic representation of map layout
    Browse_Graphic_File_Type: PDF

Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report: Geologic data were entered in the field directly on the Hogback Mountain topographic base map at a scale of 1:24,000.  Location of control and data points was made by instrument resection and by inspection where topographic contours were distinct.  Elevations were checked in the field using an altimeter calibrated at base stations and at surveyed elevations from the topographic base map.  Data were transferred from field sheets to a scale-stable mylar base map, and separate scale-stable registered overlays were constructed for polygons, lines, symbols, and tags.  Color check test plots were compared carefully to the original geologic map, and corrections were made as needed.  The map has been thoroughly reviewed for conformity with U.S. Geological Survey stratigraphic nomenclature and editorial standards.

  Logical_Consistency_Report: Map elements were visually checked for overshoots, undershoots, duplicate features, polygon closure, and other errors by the author and by the GIS technicians who created/edited the digital database.  Automated (ARC/INFO) 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 two other geologists 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 about 113 square meters.  All geospatial database elements are attributed.

  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report: Lines and data points were located in the field by instrument resection and by inspection from the topographic base map where topographic contours are distinct.  Elevations were checked in the field using an altimeter calibrated at base stations and at surveyed elevations from the topographic base map.  Thus line and points on original field maps generally were located with a vertical position accuracy of less than one contour interval and a horizontal position accuracy of about 15 m.  Lines and points were digitized from the scale-stable geologic base map using a digitizer tablet with a resolution of 0.001 inch.  Information is added in accordance to U.S. National Map Accuracy Standards, Revised June 17, 1947.  95 percent of points plotted on mylar matched the source map within 1/50 inch.

  Lineage:
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Billingsley, P.R.
          Originator: Locke, Augustus
          Title: Structure of ore deposits in the continental framework
          Publication_Date: 1939
          Publication_Information:
            Publication_Place: New York
            Publisher: American Institute of Mining and Metallurgical Engineers
      Type_of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1939
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: Billingsley and Locke (1939)
      Source_Contribution: preliminary geologic information

    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Folk, R.L.
          Title: Spectral subdivision of limestone types, in Ham, W. E., ed., Classification of carbonate rocks--A symposium, p. 62-84
          Publication_Date: 1962
          Series_Information:
            Series_Name: American Association of Petroleum Geologists Memoir
            Issue_Identification: 1
          Publication_Information:
            Publication_Place: Tulsa, Oklahoma
            Publisher: American Association of Petroleum Geologists
      Type_of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1962
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: Folk (1962)
      Source_Contribution: preliminary geologic information

    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Harrison, J.E.
          Originator: Reynolds, M.W.
          Title: Western U.S. continental margin--A stable platform dominated by vertical tectonics in the late Precambrian
          Publication_Date: 1976
          Series_Information:
            Series_Name: Geological Society of America Abstracts with Programs
            Issue_Identification: v. 8, no. 6, p. 905
          Publication_Information:
            Publication_Place: Boulder, Colorado
            Publisher: Geological Society of America
      Type_of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1976
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: Harrison and Reynolds (1976)
      Source_Contribution: preliminary geologic information

    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Hobbs, S.W.
          Originator: Griggs, A.B.
          Originator: Wallace, R.E.
          Originator: Campbell, A.B.
          Title: Geology of the Coeur d'Alene District, Shoshone County, Idaho
          Publication_Date: 1965
          Series_Information:
            Series_Name: U.S. Geological Survey Professional Paper
            Issue_Identification: 478
          Publication_Information:
            Publication_Place: Denver, Colorado
            Publisher: U.S. Geological Survey
      Type_of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1965
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: Hobbs and others (1965)
      Source_Contribution: preliminary geologic information

    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Reynolds, M.W.
          Title: Character and significance of deformation at the east end of the Lewis and Clark line, Montana
          Publication_Date: 1977
          Series_Information:
            Series_Name: Geological Society of America Abstracts with Programs
            Issue_Identification: v. 9, no. 6, p. 758-759
          Publication_Information:
            Publication_Place: Boulder, Colorado
            Publisher: Geological Society of America
      Type_of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1977
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: Reynolds (1977)
      Source_Contribution: preliminary geologic information

    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Reynolds, M.W.
          Title: Character and extent of basin-range faulting, western Montana and east-central Idaho, in Newman, G.W., and Goode, H.D., eds., RMAG and UGA 1979 Basin and Range Symposium, p. 185-193
          Publication_Date: 1979
          Publication_Information:
            Publication_Place: Denver, Colorado
            Publisher: Rocky Mountain Association of Geologists
      Type_of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1979
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: Reynolds (1979)
      Source_Contribution: preliminary geologic information

    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Reynolds, M.W.
          Originator: Close, T.J.
          Title: Gates of the Mountains Wilderness and additions, Montana, in Marsh, S.P., Kropschot, S.J., and Dickinson, R.G., eds., Wilderness Mineral Potential
          Publication_Date: 1984
          Series_Information:
            Series_Name: U.S. Geological Survey Professional Paper
            Issue_Identification: 1300, v. 2, p. 705-708
          Publication_Information:
            Publication_Place: Denver, Colorado
            Publisher: U.S. Geological Survey
      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: Reynolds and Close(1984)
      Source_Contribution: preliminary geologic information

    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Reynolds, M.W.
          Originator: Hays, W.H.
          Title: Geologic map of the Nelson quadrangle, Lewis and Clark County, Montana
          Publication_Date: 2003
          Series_Information:
            Series_Name: U.S. Geological Survey Geologic Investigations Series
            Issue_Identification: I-2774
          Publication_Information:
            Publication_Place: Denver, Colorado
            Publisher: U.S. Geological Survey
      Source_Scale_Denominator: 24000
      Type_of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 2003
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: Reynolds and Hays(2003)
      Source_Contribution: preliminary geologic information

    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Reynolds, M.W.
          Originator: Kleinkopf, M.D.
          Title: The Lewis and Clark line, Montana-Idaho--A major intraplate tectonic boundary
          Publication_Date: 1977
          Series_Information:
            Series_Name: Geological Society of America Abstracts with Programs
            Issue_Identification: v. 9, no. 7, p. 1140-1141
          Publication_Information:
            Publication_Place: Boulder, Colorado
            Publisher: Geological Society of America
      Type_of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1977
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: Reynolds and Kleinkopf(1977)
      Source_Contribution: preliminary geologic information

    Process_Step:
      Process_Description: Polygons, lines, and points representing geologic features and data points were digitized from scale-stable compilation materials using ARC/INFO software.
      Process_Date: 2001

    Process_Step:
      Process_Description: Draft check plots of the geologic map and explanation were created and submitted for peer review.  Geologists reviewed the plots for conformity with U.S. Geological Survey editorial standards and stratigraphic nomenclature.  Revisions were made to geospatial database as needed.
      Process_Date: 2001

    Process_Step:
      Process_Description: First draft of metadata created by Sharon Smith using FGDCMETA.AML ver. 1.32 01/11/99
      Process_Date: 2001

    Process_Step:
      Process_Description: Geospatial database files and metadata were quality checked for completeness and consistency.
      Process_Date: 2001

    Process_Step:
      Process_Description: Database files, metadata, and check plots were edited by the USGS Central Publications Group, and revisions made to the geospatial database as needed.
      Process_Date: 2001

    Process_Step:
      Process_Description: Final preparation of the geospatial database for distribution, and preparation of map information for publication.
      Process_Date: 2001-2002

Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Vector

  Point_and_Vector_Object_Information:
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: Point
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: String
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains

Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Planar:
      Map_Projection:
        Map_Projection_Name: Polyconic
        Polyconic:
          Longitude_of_Central_Meridian: -111.625
          Latitude_of_Projection_Origin: 46.75
          False_Easting: 0.00000
          False_Northing: 0.00000
      Planar_Coordinate_Information:
        Planar_Coordinate_Encoding_Method: coordinate pair
        Coordinate_Representation:
          Abscissa_Resolution: 10
          Ordinate_Resolution: 10
        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:
      ---------------------------------------------------------------
      COVERAGE NAME: hogpoly.pat
      ---------------------------------------------------------------

      COLUMN  ITEM NAME    WIDTH  OUTPUT  TYPE  N.DEC  ALTERNATE NAME   INDEXED?
      1    AREA                8      18     F      5                        -
      9    PERIMETER           8      18     F      5                        -
      17   HOGBACKPOLY#        4       5     B      -                        -
      21   HOGBACKPOLY-ID      4       5     B      -                        -
      25   LABEL              10      10     C      -                        -
      35   SHADESYM            4       4     I      -                        -
      39   DESCRIPTION       100     100     C      -   DESC                 -
      139  PATTERN            10      10     I      -                        -

      ------------------------------------
      USER-DEFINED ITEMS IN HOGPOLY.PAT:
      ------------------------------------

      ITEM NAME: LABEL
      DATABASE ITEM STRUCTURE: 10,10,C,0
      DESCRIPTION  text description of feature type
      ITEM VALUES FOR 'LABEL':
      Cf
      Cm
      Cpp
      Cw
      DCu
      Dj
      Dm
      Jme
      Khd
      Kk
      MDt
      Mbk
      Mbu
      Ml
      Mm
      OGb
      PPpq
      Pa
      QTg
      Qa
      Ql
      Qog
      Yg
      Yn

      ITEM NAME: SHADESYM
      DATABASE ITEM STRUCTURE: 4,4,I,0
      DESCRIPTION  shade symbol value from shadeset color524.shd to fill polygons
      ITEM VALUES FOR 'SHADESYM':
      0
      4
      30
      52
      55
      60
      71
      100
      102
      143
      164
      233
      261
      263
      264
      274
      300
      304
      346
      410
      453
      511
      530
      533
      611

      ITEM NAME: DESCRIPTION
      DATABASE ITEM STRUCTURE: 100,100,C,0
      DESCRIPTION  text description of feature type
      ITEM VALUES FOR 'DESCRIPTION':

      Flathead Sandstone (Middle Cambrian)
      Meagher Limestone (Middle Cambrian)
      Pilgrim Formation and Park Shale, undivided (Upper and Middle Cambrian)
      Wolsey Shale (Middle Cambrian)
      Devonian and Cambrian rocks undivided
      Jefferson Formation (Upper Devonian)
      Maywood Formation (Upper and Middle Upper Devonian)
      Morrison Formation and Ellis Group undivided (Jurassic)
      Hornblende diorite (Upper Cretaceous)
      Kootenai Formation (Lower Cretaceous)
      Big Snowy Group, Kibbey Formation (Upper Mississippian)
      Big Snowy Group, Health and Otter Formations, undivided (Upper Mississippian)
      Three Forks Formation (Lower Mississippian and Upper Devonian)
      Lodgepole Limestone (Lower Mississippian)
      Mission Canyon Limestone (Upper and Lower Mississippian)
      Basalt (Oligocene)
      Amsden Formation  (Pennsylvanian)
      Phosphoria and Quadrant Formations, undivided (Permian and Pennsylvanian)
      Alluvium (Holocene)
      Landslide deposits (Holocene and Pleistocene)
      Old gravel (Holocene and Pleistocene)
      Older gravel (Pleistocene and Pliocene)
      Greyson Formation (Belt Supergroup, Middle Proterozoic)
      Newland Formation (Belt Supergroup, Middle Proterozoic)
      Diorite sills (Upper Proterozoic)

      ITEM NAME: PATTERN
      DATABASE ITEM STRUCTURE: 10,10,I,0
      DESCRIPTION  Indicates cross hatch sections
      ITEM VALUES FOR 'PATTERN':
      0
      101

      *******************************************************************************
      ---------------------------------------------------------------
      COVERAGE NAME: hogpoly.aat
      ---------------------------------------------------------------

      COLUMN  ITEM NAME    WIDTH  OUTPUT  TYPE  N.DEC  ALTERNATE NAME   INDEXED?
      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  HOGBACKPOLY#         4       5     B      -                        -
      29  HOGBACKPOLY-ID       4       5     B      -                        -
      33  LINECODE             4       4     I      -                        -
      37  DESCRIPTION         80      80     C      -    DESC                -

      ------------------------------------
      USER-DEFINED ITEMS IN HOGPOLY.AAT:
      ------------------------------------

      ITEM NAME: LINECODE
      DATABASE ITEM STRUCTURE: 4,4,I,0
      DESCRIPTION  set lineset values for line coding
      ITEM VALUES FOR 'LINECODE':
      1
      2
      3
      4
      15
      20
      22
      24
      26
      35
      51
      176
      183
      184
      216
      217
      218
      220
      221
      222
      223
      227
      321
      328
      330

      ITEM NAME: DESCRIPTION
      DATABASE ITEM STRUCTURE: 80,80,C,0
      DESCRIPTION  text description of linear feature type
      ITEM VALUES FOR 'DESCRIPTION':
      contact - approximately located
      contact - certain
      contact - concealed
      contact - inferred
      dike - OGb
      dike Khd - approximately located
      dike Khd - certain
      dike Zd - approximately located
      dike Zd - certain
      fault - approximately located
      fault - certain
      fault - inferred
      fault displacement unknown - concealed
      neatline
      normal fault - concealed
      normal fault - inferred
      overturn thrust fault - approximately located
      overturn thrust fault - certain
      thrust fault - approximate location queried
      thrust fault - approximately located
      thrust fault - certain
      thrust fault - concealed
      thrust fault - inferred
      thrust fault - inferred, queried

      ******************************************************************************

      ---------------------------------------------------------------
      COVERAGE NAME: hogline
      ---------------------------------------------------------------

      COLUMN  ITEM NAME    WIDTH  OUTPUT  TYPE  N.DEC  ALTERNATE NAME   INDEXED?
      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   HOGBACKLINE#        4       5     B      -                        -
      29   HOGBACKLINE-ID      4       5     B      -                        -
      33   LINECODE            3       3     I      -                        -
      36   DESCRIPTION        80      80     C      -    DESC                -
      116  LINESET            30      30     C      -                        -

      ------------------------------------
      USER-DEFINED ITEMS IN HOGLINE.AAT:
      ------------------------------------

      ITEM NAME: LINECODE
      DATABASE ITEM STRUCTURE: 3,3,I,0
      DESCRIPTION  set lineset values for line coding in hogline
      ITEM VALUES FOR 'LINECODE':
      1
      60
      61
      62
      80
      81
      92
      93
      94
      112
      113
      114
      121
      332

      ITEM NAME: DESCRIPTION
      DATABASE ITEM STRUCTURE: 80,80,C,0
      DESCRIPTION  text description of linear feature type
      ITEM VALUES FOR 'DESCRIPTION':
      anticline - approximately located
      anticline - certain
      anticline - inferred
      inverted anticline - approximately located
      inverted syncline - approximately located
      line of cross-section A
      line of cross-section B
      line of cross-section C
      line of cross-section D
      overturned anticline - approximately located
      overturned anticline - certain
      overturned syncline, approximately located
      overturned syncline, certain
      overturned syncline, concealed
      overturned syncline, inferred
      syncline - Approximately located
      syncline - certain
      syncline - concealed
      syncline - inferred

      ITEM NAME: LINESET
      DATABASE ITEM STRUCTURE: 30,30,C,0
      DESCRIPTION  identifies linesets used for linear symbolset
      ITEM VALUES FOR 'LINESET':
      geol_sfo.lin
      plotter

      ********************************************************************************

      ---------------------------------------------------------------
      COVERAGE NAME: hogpoint
      ---------------------------------------------------------------

      COLUMN  ITEM NAME    WIDTH  OUTPUT  TYPE  N.DEC  ALTERNATE NAME   INDEXED?
      1    AREA                8      18     F      5                        -
      9    PERIMETER           8      18     F      5                        -
      17   HOGBACKPT#          4       5     B      -                        -
      21   HOGBACKPT-ID        4       5     B      -                        -
      25   SYMBOL              3       3     I      -                        -
      28   ROTATION            3       3     I      -    AZIMUTH             -
      31   INCLINATION         3       3     I      -    DIP                 -
      34   DESCRIPTION        80      80     C      -    DESC                -
      118  SYMSET             10      10     C      -                        -

      ------------------------------------
      USER-DEFINED ITEMS IN HOGPOINT.PAT:
      ------------------------------------

      ITEM NAME: SYMBOL
      DATABASE ITEM STRUCTURE: 3,3,I,0
      DESCRIPTION  value used to identify symbol from markerset
      ITEM VALUES FOR 'SYMBOL':
      1
      2
      3
      6
      7
      15
      101
      109
      114
      133
      742
      743
      746
      747

      ITEM NAME: ROTATION
      DATABASE ITEM STRUCTURE: 3,3,I,0
      DESCRIPTION  compass orientation of feature, in degrees
      ITEM VALUES FOR 'ROTATION':
      0
      4
      7
      13
      20
      30
      35
      37
      57
      58
      60
      65
      67
      70
      73
      80
      82
      83
      85
      88
      90
      92
      94
      95
      98
      100
      102
      103
      105
      107
      108
      110
      112
      113
      114
      115
      116
      117
      118
      120
      125
      127
      128
      130
      132
      133
      135
      137
      140
      142
      143
      145
      147
      148
      150
      153
      155
      157
      160
      162
      163
      165
      166
      168
      170
      173
      175
      177
      180
      185
      195
      205
      210
      213
      215
      220
      225
      230
      235
      236
      240
      247
      248
      255
      257
      258
      260
      262
      270
      273
      274
      275
      279
      283
      287
      290
      293
      294
      297
      300
      303
      305
      310
      312
      313
      315
      318
      327
      330
      335
      338
      342
      345
      348
      350

      ITEM NAME: INCLINATION
      DATABASE ITEM STRUCTURE: 3,3,I,0
      DESCRIPTION  inclination from horizontal of feature, in degrees
      ITEM VALUES FOR 'INCLINATION':
      0
      5
      7
      8
      10
      12
      13
      15
      17
      18
      20
      22
      23
      24
      25
      26
      27
      28
      30
      31
      32
      33
      34
      35
      36
      37
      38
      40
      42
      43
      45
      46
      47
      48
      50
      52
      53
      55
      57
      60
      64
      65
      66
      67
      68
      70
      74
      75
      76
      77
      80
      83
      85
      90

      ITEM NAME: DESCRIPTION
      DATABASE ITEM STRUCTURE: 80,80,C,0
      DESCRIPTION  text description of each symbol
      ITEM VALUES FOR 'DESCRIPTION':
      Dip of fault surface
      Dry oil well
      bedding overturned > 180 degrees - strike and dip
      Zd outcrop too small to show at map scale
      horizontal bedding
      inclined bedding - strike and dip
      inclined cleavage - strike and dip
      overturned bedding - strike and dip
      prospect
      quartz vein
      spring
      vertical bedding

      ITEM NAME: SYMSET
      DATABASE ITEM STRUCTURE: 10,10,C,0
      DESCRIPTION  defines markersets used
      ITEM VALUES FOR 'SYMSET':
      GEOSCAMP2
      MUNICIPAL
      OILGAS
      USGS

    Entity_and_Attribute_Detail_Citation: none

Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
      Contact_Address:
        Address_Type: mailing and physical address
        Address: Central Publications Group
        Address: P.O. Box 25046, Federal Center, MS-902
        City: Denver
        State_or_Province: CO
        Postal_Code: 80225-0046
        Country: USA
      Contact_Voice_Telephone: 303-236-5486

  Resource_Description: I-2773

  Distribution_Liability:

    Although these data have been subjected to rigorous review and are substantially complete, they are released on the condition that neither the U.S. Geological Survey nor the Unites States Government may be held liable for any damages resulting from their authorized or unauthorized use.

  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: ARCE, SHP
        Format_Version_Number: ArcInfo v. 8.0.2
        File_Decompression_Technique: .tar.gz - UNIX gzip-compressed TAR file(ARCE files) use GNU zip and TAR.EXE - self-extracting Window ZIP archive (SHP files) - execute the file to extract
      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name: http://pubs.usgs.gov/imap/2003/i-2773/
    Fees: none

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: PO Box 25286
        Address: Federal Center
        City: Denver
        State_or_Province: CO
        Postal_Code: 80225-0286
        Country: USA
      Contact_Voice_Telephone: (888) ASK-USGS
  Distribution_Liability: none
  Standard_Order_Process:
    Non-digital_Form: available as one printed sheet
    Fees: Contact USGS at the address listed above

Metadata_Reference_Information:
  Metadata_Date: 20021203
  Metadata_Review_Date: 20020227
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
        Contact_Person:
          Theodore R. Brandt
          Sharon Smith
      Contact_Address:
        Address_Type: mailing
        Address: Box 25046, Federal Center, MS-913
        City: Denver
        State_or_Province: CO
        Postal_Code: 80225-0046
        Country: USA
      Contact_Voice_Telephone:
        Ted Brandt: 303-236-1901
        Sharon Smith: 303-236-4610
      Contact_Electronic_Mail_Address:
        tbrandt@usgs.gov
        ssmith@usgs.gov
  Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998
  Metadata_Access_Constraints: none
  Metadata_Use_Constraints: none