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USGS Geoscience Data Catalog

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Maps showing geology, oil and gas fields, and geologic provinces of the Arctic

Metadata also available as - [Outline] - [Parseable text] - [DIF]

Frequently-anticipated questions:

What does this data set describe?

Title:
Maps showing geology, oil and gas fields, and geologic provinces of the Arctic
Abstract:
These digitally compiled maps include geology, oil and gas field centerpoints, and geologic provinces of the Arctic (North Pole area encircled by 64° N Latitude). This digital compilation is an interim product of the U.S. Geological Survey's World Energy Project (WEP) and part of a series published on CD-ROMs. The goal of the WEP is to assess the undiscovered, technically recoverable oil and gas resources of the world. Results of this assessment were reported in the year 2000 (see USGS DDS-60).
On the CD-ROM there are several data sets subdivided into directories:
1. ArcInfo coverages and export files:
1.1. COVER_ST - coverages in Polar Stereographic projection (main data sets)
1.2. COVER_G - coverages in geographic coordinates (with line and point topology only)
1.3 EXPORT - ArcInfo Export (.e00) and Ungenerate (.gen) files in Polar Stereographic projection supplemented by comma delimited file for geology polygon attributes.
2. ArcView 3.2 shape files:
2.1. SHAPE - all the shape files and corresponding data files in Polar Stereographic projection. ArcView project GEO_STR.APR uses these shape files and coverages in COVER_ST directory. ArcView project GEO_BATH.APR uses onshore portion of these shape files and coverages. ArcExplorer project file ARC_GEO.AEP uses coverages..
2.2. GEO_AV30.apr - identical ArcView project for Macintosh and ArcView 3.0 users.
3. ArcGIS 8.2 data in directory AMap_8:
3.2. Arctic_g.mxd - ArcMap 8.2 data set based on ArcView 3.2 shape files and coverages in COVER_ST directory.
3.3. *.lyr - ArcMap 8.2 layer files.
3.4. Arctic_g.pmf - ArcReader file compiled by ArcGIS 8.2 Publisher.
These three major GIS data sets are supplemented by directories:
1. PLOT - final printable maps in Adobe PDF format
2. avl_avp - legend and pattern files for ArcView.
Supplemental_Information:
There are several files in the root directory of the CD-ROM:
1. GEO_STR.apr - ArcView 3.2 Project file. This file is ready to use with ArcView 3.2 software. The file points to source ArcInfo coverages in workspace \cover_st and some of the shape files. This project file depicts geology, latitude/longitude graticule, USGS geologic provinces, centerpoints of oil and gas fields, rivers, lakes, and country boundaries.
2. GEO_BATH.apr - ArcView 3.2 Project file. This file shows onshore geology and bathymetry based on shape files in the SHAPE directory.
3. ARC_GEO.aep - ArcExplorer 1.1 Project file. This file can be viewed with ESRI's freeware program, ArcExplorer1.1. The file points to source coverages in workspace \cover_st. This project file depicts the same data as the ArcView project. ESRI's ArcExplorer 1.1 can be installed from this CD-ROM, or it can be downloaded FREE from the ESRI home page <http:/www.esri.com> <http:/www.esri.com>
4. GEO_GEOG.apr - sample ArcView 3.2 Project file (ESRI). This is the sample on how to use ArcInfo coverages without polygon topology in geographic coordinates with ArcView.
5. Several files for CD AutoRun feature
6. Read_me.htm - The CD readme file containing general information about the CD and its use.
7. arc_copy.exe - program to copy selected data sets to user's Hard Drive. Other supplemental directories are:
6. "PLOT" directory contains final maps in ADOBE PDF format ready to plot or view. It can be used in case of lack of ArcView software to plot final paper maps.
7. METADATA Contains metadata in FGDC HTML format. A "project" and several "layer" metadata descriptions are given.
  1. How should this data set be cited?

    U.S. Geological Survey, 2003, Maps showing geology, oil and gas fields, and geologic provinces of the Arctic: U.S. Geological Survey Open-File Report 97-470J, U.S. Geological Survey, Central Energy Resources Team, Denver, Colorado.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -178.825087
    East_Bounding_Coordinate: 178.927956
    North_Bounding_Coordinate: 89.999989
    South_Bounding_Coordinate: 53.791686

  3. What does it look like?

    <http://pubs.usgs.gov/of/1997/ofr-97-470/OF97-470J/Plot/arc_geop.pdf> (PDF)
    Printable representation of the geologic map, 6.8 megabytes
    <http://pubs.usgs.gov/of/1997/ofr-97-470/OF97-470J/Plot/arc_bath.pdf> (PDF)
    Printable representation of the onshore geologic map with bathymetric contours offshore, 9.7 megabytes.

  4. Does the data set describe conditions during a particular time period?

    Calendar_Date: 2003
    Currentness_Reference: publication date

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: vector digital data

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      This is a Vector data set.

    2. What coordinate system is used to represent geographic features?

      The map projection used is Polar Stereographic.

      Projection parameters:
      Straight-Vertical_Longitude_from_Pole: 0.0
      Standard_Parallel: 75.0
      False_Easting: 0.0
      False_Northing: 0.0

      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 0.008192
      Ordinates (y-coordinates) are specified to the nearest 0.008192
      Planar coordinates are specified in meters

      The horizontal datum used is D_Clarke_1866.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.4.
      The flattening of the ellipsoid used is 1/294.98.

  7. How does the data set describe geographic features?

    arc_geotf or arc_geos
    Arctic Geology (polygon features) (Source: U.S.Geological Survey)

    AGE
    Geologic age (final)

    ValueDefinition
    QQuaternary
    N-QNeogene and Quaternary
    N2-QPliocene to Quaternary
    N2-Q1Pliocene to lower Quaternary
    NNeogene
    N2Pliocene
    N1Miocene
    Pg-NPaleogene and Neogene
    Pg3-QOligocene to Quaternary
    Pg3-N1Oligocene to Miocene
    Pg2-NEocene to Neogene
    Pg2-N1Eocene to Miocene
    PgPaleogene
    Pg3Oligocene
    Pg23Eocene and Oligocene
    Pg2Eocene
    Pg12Paleocene and Eocene
    Pg1Paleocene
    MzMesozoic
    K2-PgUpper Cretaceous and Paleogene
    K1-PgLower Cretaceous to Paleogene
    K2-Pg1Upper Cretaceous to Paleocene
    K1-Pg1Lower Cretaceous to Paleocene
    KCretaceous
    K2Upper Cretaceous
    K1Lower Cretaceous
    J-KJurassic and Cretaceous
    J-K1Jurassic to Lower Cretaceous
    J3-K1Upper Jurassic to Lower Cretaceous
    JJurassic
    J3Upper Jurassic
    J23Middle and Upper Jurasssic
    J2Middle Jurassic
    J12Lower and Middle Jurasssic
    J1Lower Jurassic
    Tr-JTriassic and Jurassic
    Tr3-J1Upper Triassic to Lower Jurassic
    TrTriassic
    Tr3Upper Triassic
    Tr23Middle and Upper Triassic
    Tr2Middle Triassic
    Tr12Lower and MiddleTriassic
    Tr1Lower Triassic
    Pz-MzPaleozoic and Mesozoic
    Pz2-TrUpper Paleozoic to Triassic
    PzPaleozoic
    P-JPermian to Jurassic
    P-TrPermian to Triassic
    P2-TrUpper Permian to Triassic
    PPermian
    P2Upper Permian
    P1Lower Permian
    C-PCarboniferous and Permian
    C2-P1Upper Carboniferous to Lower Permian
    C-P1Carboniferous to Lower Permian
    C-JCarboniferous to Jurassic
    C-TrCarboniferous to Triassic
    CCarboniferous
    C2Upper Carboniferous
    C1Lower Carboniferous
    D-CDevonian and Carboniferous
    D3-CUpper Devonian to Carboniferous
    D-C1Devonian to Lower Carboniferous
    DDevonian
    D3Upper Devonian
    D23Middle and Upper Devonian
    D2Middle Devonian
    D12Lower and Middle Devonian
    D1Lower Devonian
    Pz1Lower Paleozoic
    S-DSilurian and Devonian
    SSilurian
    S2Upper Silurian
    S1Lower Silurian
    O-DOrdovician to Devonian
    O-SOrdovician and Silurian
    OOrdovician
    O23Middle and Upper Ordovician
    O1Lower Ordovician
    Cm-DCambrian to Devonian
    Cm-SCambrian to Silurian
    Cm-OCambrian and Ordovician
    CmCambrian
    Cm3Upper Cambrian
    Cm23Middle and Upper Cambrian
    Cm2Middle Cambrian
    Cm12Lower and Middle Cambrian
    Cm1Lower Cambrian
    Pr-Pz1Proterozoic to lower Paleozoic
    Pr3-Pz1Upper Proterozoic to lower Paleozoic
    Pr3-SUpper Proterozoic to Silurian
    Pr-CmProterozoic to Cambrian
    Pr3-CmUpper Proterozoic to Cambrian
    Pr23-CmMiddle and Upper Proterozoic to Cambrian
    Pr3Upper Proterozoic
    Pr23Middle and Upper Proterozoic
    Pr2Middle Proterozoic
    Pr12Lower and Middle Proterozoic
    Pr1Lower Proterozoic
    Ar-PrArchean and Proterozoic
    Ar-Pr1Archean and Lower Proterozoic
    ArArchean
    Ice 

    AGE_GEN
    Generalized geologic age

    ValueDefinition
    ArArchean
    Ar-PrArchean and Proterozoic
    CCarboniferous
    C-JCarboniferous to Jurassic
    C-PCarboniferous and Permian
    C-TrCarboniferous to Triassic
    CmCambrian
    Cm-DCambrian to Devonian
    Cm-OCambrian and Ordovician
    Cm-SCambrian to Silurian
    CzCenozoic
    DDevonian
    D-CDevonian and Carboniferous
    Ice 
    JJurassic
    J-KJurassic and Cretaceous
    KCretaceous
    K-TCretaceous and Tertiary
    MzMwsozoic
    OOrdovician
    O-DOrdovician to Devonian
    O-SOrdovician and Silurian
    PPermian
    P-JPermian to Jurassic
    P-TrPermian to Triassic
    PrProterozoic
    Pr-CmProterozoic to Cambrian
    Pr-PzProterozoic to Paleozoic
    Pr-SProterozoic to Silurian
    PzPaleozoic
    Pz-MzPaleozoic and Mesozoic
    Pz-TrPaleozoic to Triassic
    QQuaternary
    SSilurian
    S-DSilurian to Devonian
    TTertiary

    G
    Code for attribute completed

    ValueDefinition
    4done

    LI_TYPE
    Lithology type

    ValueDefinition
     
    alkaline 
    basic 
    diorite 
    granite 
    granodiorite 
    sedsedimentary
    syenogranite 
    ultramafic 
    volcanic 

    POS
    Indicator for onshore and offshore position

    ValueDefinition
    offoffshore
    ononshore

    CHECK
    Indicator for uncertainty in geologic age attribute

    ValueDefinition
     
    Ygeologic age uncertain

    ERROR
    Indicator for error in geologic age attribute on original paper map

    ValueDefinition
     
    Yerror in color, pattern or revealed by external source

    AGE_OR
    Geologic age (original)

    ValueDefinition
    QQuaternary
    N-QNeogene and Quaternary
    N2-QPliocene to Quaternary
    N2-Q1Pliocene to lower Quaternary
    NNeogene
    N2Pliocene
    N1Miocene
    Pg-NPaleogene and Neogene
    Pg3-QOligocene to Quaternary
    Pg3-N1Oligocene to Miocene
    Pg2-NEocene to Neogene
    Pg2-N1Eocene to Miocene
    PgPaleogene
    Pg3Oligocene
    Pg23Eocene and Oligocene
    Pg2Eocene
    Pg12Paleocene and Eocene
    Pg1Paleocene
    MzMesozoic
    K2-PgUpper Cretaceous and Paleogene
    K1-PgLower Cretaceous to Paleogene
    K2-Pg1Upper Cretaceous to Paleocene
    K1-Pg1Lower Cretaceous to Paleocene
    KCretaceous
    K2Upper Cretaceous
    K1Lower Cretaceous
    J-KJurassic and Cretaceous
    J-K1Jurassic to Lower Cretaceous
    J3-K1Upper Jurassic to Lower Cretaceous
    JJurassic
    J3Upper Jurassic
    J23Middle and Upper Jurasssic
    J2Middle Jurassic
    J12Lower and Middle Jurasssic
    J1Lower Jurassic
    Tr-JTriassic and Jurassic
    Tr3-J1Upper Triassic to Lower Jurassic
    TrTriassic
    Tr3Upper Triassic
    Tr23Middle and Upper Triassic
    Tr2Middle Triassic
    Tr12Lower and MiddleTriassic
    Tr1Lower Triassic
    Pz-MzPaleozoic and Mesozoic
    Pz2-TrUpper Paleozoic to Triassic
    PzPaleozoic
    P-JPermian to Jurassic
    P-TrPermian to Triassic
    P2-TrUpper Permian to Triassic
    PPermian
    P2Upper Permian
    P1Lower Permian
    C-PCarboniferous and Permian
    C2-P1Upper Carboniferous to Lower Permian
    C-P1Carboniferous to Lower Permian
    C-JCarboniferous to Jurassic
    C-TrCarboniferous to Triassic
    CCarboniferous
    C2Upper Carboniferous
    C1Lower Carboniferous
    D-CDevonian and Carboniferous
    D3-CUpper Devonian to Carboniferous
    D-C1Devonian to Lower Carboniferous
    DDevonian
    D3Upper Devonian
    D23Middle and Upper Devonian
    D2Middle Devonian
    D12Lower and Middle Devonian
    D1Lower Devonian
    Pz1Lower Paleozoic
    S-DSilurian and Devonian
    SSilurian
    S2Upper Silurian
    S1Lower Silurian
    O-DOrdovician to Devonian
    O-SOrdovician and Silurian
    OOrdovician
    O23Middle and Upper Ordovician
    O1Lower Ordovician
    Cm-DCambrian to Devonian
    Cm-SCambrian to Silurian
    Cm-OCambrian and Ordovician
    CmCambrian
    Cm3Upper Cambrian
    Cm23Middle and Upper Cambrian
    Cm2Middle Cambrian
    Cm12Lower and Middle Cambrian
    Cm1Lower Cambrian
    Pr-Pz1Proterozoic to lower Paleozoic
    Pr3-Pz1Upper Proterozoic to lower Paleozoic
    Pr3-SUpper Proterozoic to Silurian
    Pr-CmProterozoic to Cambrian
    Pr3-CmUpper Proterozoic to Cambrian
    Pr23-CmMiddle and Upper Proterozoic to Cambrian
    Pr3Upper Proterozoic
    Pr23Middle and Upper Proterozoic
    Pr2Middle Proterozoic
    Pr12Lower and Middle Proterozoic
    Pr1Lower Proterozoic
    Ar-PrArchean and Proterozoic
    Ar-Pr1Archean and Lower Proterozoic
    ArArchean
    Ice 

    CAN_MAT
    Rate of spatial matching of geologic age polygons on Arctic map and Geological Map of Canada

    ValueDefinition
     
    excelexcellent
    good 
    multseveral polygons on Geological Map of Canada match one polygon on Arctic map
    none 
    partpartial matching
    poor 

    CAN_AGE
    Geologic age on Geological Map of Canada

    same abbreviations as AGE_OR

    CAN_LITH
    Lithology on Geological Map of Canada

    ValueDefinition
     
    basic 
    diorite 
    granite 
    metamorphic 
    sedsedimentary
    syenogranite 
    volcanic 

    linefs
    Line geologic features (Source: U.S. Geological Survey)

    TYPE
    Type of linear geologic feature

    ValueDefinition
     
    Detachment fault 
    Facies Contact 
    Fault 
    Shore 
    Spreading Center 
    Strike-slip fault 
    Thrust Fault 

    G
    Working code for digitizing

    ValueDefinition
    0needs correction
    4final

    POS
    Code for spatial line feature position

    ValueDefinition
     
    offoffshore
    ononshore
    sshoreline

    ARC_SYM
    ArcInfo line symbol codes to draw in ArcEdit

    Range of values
    Minimum:0
    Maximum:92

    wep_prvs
    Geologic Province (Source: U.S.Geological Survey)

    fld_str
    Centerpoint of oil/gas field (Source: IHS Energy Group (Petroconsultants))

    FIELD_TYPE
    Type of oil and gas field

    ValueDefinition
    Gas 
    Gas and condensate 
    Gas and oil 
    Gas, condensate and oil 
    Oil 
    Oil and gas 
    Oil, gas and condensate 

    bath_str
    Bathymetric contours (Source: International Oceanographic Commission (IOC), U.S. National Oceanic and Atmospheric Administration (NOAA).)

    geo_onn
    Onshore polygon geologic features (Source: U.S.Geological Survey)

    AGE
    Geologic age (final)

    ValueDefinition
    QQuaternary
    N-QNeogene and Quaternary
    N2-QPliocene to Quaternary
    N2-Q1Pliocene to lower Quaternary
    NNeogene
    N2Pliocene
    N1Miocene
    Pg-NPaleogene and Neogene
    Pg3-QOligocene to Quaternary
    Pg3-N1Oligocene to Miocene
    Pg2-NEocene to Neogene
    Pg2-N1Eocene to Miocene
    PgPaleogene
    Pg3Oligocene
    Pg23Eocene and Oligocene
    Pg2Eocene
    Pg12Paleocene and Eocene
    Pg1Paleocene
    MzMesozoic
    K2-PgUpper Cretaceous and Paleogene
    K1-PgLower Cretaceous to Paleogene
    K2-Pg1Upper Cretaceous to Paleocene
    K1-Pg1Lower Cretaceous to Paleocene
    KCretaceous
    K2Upper Cretaceous
    K1Lower Cretaceous
    J-KJurassic and Cretaceous
    J-K1Jurassic to Lower Cretaceous
    J3-K1Upper Jurassic to Lower Cretaceous
    JJurassic
    J3Upper Jurassic
    J23Middle and Upper Jurasssic
    J2Middle Jurassic
    J12Lower and Middle Jurasssic
    J1Lower Jurassic
    Tr-JTriassic and Jurassic
    Tr3-J1Upper Triassic to Lower Jurassic
    TrTriassic
    Tr3Upper Triassic
    Tr23Middle and Upper Triassic
    Tr2Middle Triassic
    Tr12Lower and MiddleTriassic
    Tr1Lower Triassic
    Pz-MzPaleozoic and Mesozoic
    Pz2-TrUpper Paleozoic to Triassic
    PzPaleozoic
    P-JPermian to Jurassic
    P-TrPermian to Triassic
    P2-TrUpper Permian to Triassic
    PPermian
    P2Upper Permian
    P1Lower Permian
    C-PCarboniferous and Permian
    C2-P1Upper Carboniferous to Lower Permian
    C-P1Carboniferous to Lower Permian
    C-JCarboniferous to Jurassic
    C-TrCarboniferous to Triassic
    CCarboniferous
    C2Upper Carboniferous
    C1Lower Carboniferous
    D-CDevonian and Carboniferous
    D3-CUpper Devonian to Carboniferous
    D-C1Devonian to Lower Carboniferous
    DDevonian
    D3Upper Devonian
    D23Middle and Upper Devonian
    D2Middle Devonian
    D12Lower and Middle Devonian
    D1Lower Devonian
    Pz1Lower Paleozoic
    S-DSilurian and Devonian
    SSilurian
    S2Upper Silurian
    S1Lower Silurian
    O-DOrdovician to Devonian
    O-SOrdovician and Silurian
    OOrdovician
    O23Middle and Upper Ordovician
    O1Lower Ordovician
    Cm-DCambrian to Devonian
    Cm-SCambrian to Silurian
    Cm-OCambrian and Ordovician
    CmCambrian
    Cm3Upper Cambrian
    Cm23Middle and Upper Cambrian
    Cm2Middle Cambrian
    Cm12Lower and Middle Cambrian
    Cm1Lower Cambrian
    Pr-Pz1Proterozoic to lower Paleozoic
    Pr3-Pz1Upper Proterozoic to lower Paleozoic
    Pr3-SUpper Proterozoic to Silurian
    Pr-CmProterozoic to Cambrian
    Pr3-CmUpper Proterozoic to Cambrian
    Pr23-CmMiddle and Upper Proterozoic to Cambrian
    Pr3Upper Proterozoic
    Pr23Middle and Upper Proterozoic
    Pr2Middle Proterozoic
    Pr12Lower and Middle Proterozoic
    Pr1Lower Proterozoic
    Ar-PrArchean and Proterozoic
    Ar-Pr1Archean and Lower Proterozoic
    ArArchean
    Ice 

    AGE_GEN
    Generalized geologic age

    ValueDefinition
    ArArchean
    Ar-PrArchean and Proterozoic
    CCarboniferous
    C-JCarboniferous to Jurassic
    C-PCarboniferous and Permian
    C-TrCarboniferous to Triassic
    CmCambrian
    Cm-DCambrian to Devonian
    Cm-OCambrian and Ordovician
    Cm-SCambrian to Silurian
    CzCenozoic
    DDevonian
    D-CDevonian and Carboniferous
    Ice 
    JJurassic
    J-KJurassic and Cretaceous
    KCretaceous
    K-TCretaceous and Tertiary
    MzMwsozoic
    OOrdovician
    O-DOrdovician to Devonian
    O-SOrdovician and Silurian
    PPermian
    P-JPermian to Jurassic
    P-TrPermian to Triassic
    PrProterozoic
    Pr-CmProterozoic to Cambrian
    Pr-PzProterozoic to Paleozoic
    Pr-SProterozoic to Silurian
    PzPaleozoic
    Pz-MzPaleozoic and Mesozoic
    Pz-TrPaleozoic to Triassic
    QQuaternary
    SSilurian
    S-DSilurian to Devonian
    TTertiary

    G
    Code for attribute completed

    ValueDefinition
    4done

    LI_TYPE
    Lithology type

    ValueDefinition
     
    alkaline 
    basic 
    diorite 
    granite 
    granodiorite 
    sedsedimentary
    syenogranite 
    ultramafic 
    volcanic 

    POS
    Indicator for on and offshore position

    ValueDefinition
    ononshore

    CHECK
    Indicator for uncertainty in geologic age attribute

    ValueDefinition
     
    Ygeologic age uncertain

    ERROR
    Indicator for error in geologic age attribute on original paper map

    ValueDefinition
     
    Yerror in color, pattern or revealed by external source

    AGE_OR
    Geologic age (original)

    ValueDefinition
    QQuaternary
    N-QNeogene and Quaternary
    N2-QPliocene to Quaternary
    N2-Q1Pliocene to lower Quaternary
    NNeogene
    N2Pliocene
    N1Miocene
    Pg-NPaleogene and Neogene
    Pg3-QOligocene to Quaternary
    Pg3-N1Oligocene to Miocene
    Pg2-NEocene to Neogene
    Pg2-N1Eocene to Miocene
    PgPaleogene
    Pg3Oligocene
    Pg23Eocene and Oligocene
    Pg2Eocene
    Pg12Paleocene and Eocene
    Pg1Paleocene
    MzMesozoic
    K2-PgUpper Cretaceous and Paleogene
    K1-PgLower Cretaceous to Paleogene
    K2-Pg1Upper Cretaceous to Paleocene
    K1-Pg1Lower Cretaceous to Paleocene
    KCretaceous
    K2Upper Cretaceous
    K1Lower Cretaceous
    J-KJurassic and Cretaceous
    J-K1Jurassic to Lower Cretaceous
    J3-K1Upper Jurassic to Lower Cretaceous
    JJurassic
    J3Upper Jurassic
    J23Middle and Upper Jurasssic
    J2Middle Jurassic
    J12Lower and Middle Jurasssic
    J1Lower Jurassic
    Tr-JTriassic and Jurassic
    Tr3-J1Upper Triassic to Lower Jurassic
    TrTriassic
    Tr3Upper Triassic
    Tr23Middle and Upper Triassic
    Tr2Middle Triassic
    Tr12Lower and MiddleTriassic
    Tr1Lower Triassic
    Pz-MzPaleozoic and Mesozoic
    Pz2-TrUpper Paleozoic to Triassic
    PzPaleozoic
    P-JPermian to Jurassic
    P-TrPermian to Triassic
    P2-TrUpper Permian to Triassic
    PPermian
    P2Upper Permian
    P1Lower Permian
    C-PCarboniferous and Permian
    C2-P1Upper Carboniferous to Lower Permian
    C-P1Carboniferous to Lower Permian
    C-JCarboniferous to Jurassic
    C-TrCarboniferous to Triassic
    CCarboniferous
    C2Upper Carboniferous
    C1Lower Carboniferous
    D-CDevonian and Carboniferous
    D3-CUpper Devonian to Carboniferous
    D-C1Devonian to Lower Carboniferous
    DDevonian
    D3Upper Devonian
    D23Middle and Upper Devonian
    D2Middle Devonian
    D12Lower and Middle Devonian
    D1Lower Devonian
    Pz1Lower Paleozoic
    S-DSilurian and Devonian
    SSilurian
    S2Upper Silurian
    S1Lower Silurian
    O-DOrdovician to Devonian
    O-SOrdovician and Silurian
    OOrdovician
    O23Middle and Upper Ordovician
    O1Lower Ordovician
    Cm-DCambrian to Devonian
    Cm-SCambrian to Silurian
    Cm-OCambrian and Ordovician
    CmCambrian
    Cm3Upper Cambrian
    Cm23Middle and Upper Cambrian
    Cm2Middle Cambrian
    Cm12Lower and Middle Cambrian
    Cm1Lower Cambrian
    Pr-Pz1Proterozoic to lower Paleozoic
    Pr3-Pz1Upper Proterozoic to lower Paleozoic
    Pr3-SUpper Proterozoic to Silurian
    Pr-CmProterozoic to Cambrian
    Pr3-CmUpper Proterozoic to Cambrian
    Pr23-CmMiddle and Upper Proterozoic to Cambrian
    Pr3Upper Proterozoic
    Pr23Middle and Upper Proterozoic
    Pr2Middle Proterozoic
    Pr12Lower and Middle Proterozoic
    Pr1Lower Proterozoic
    Ar-PrArchean and Proterozoic
    Ar-Pr1Archean and Lower Proterozoic
    ArArchean
    Ice 

    CAN_MAT

    ValueDefinition
     
    excelexcellent
    good 
    multseveral polygons on Geological Map of Canada match one polygon on Arctic map
    none 
    partpartial matching
    poor 

    CAN_AGE
    Geologic age on Geological Map of Canada

    same abbreviations as AGE_OR

    CAN_LITH
    Lithology on Geological Map of Canada

    ValueDefinition
     
    basic 
    diorite 
    granite 
    metamorphic 
    sedsedimentary
    syenogranite 
    volcanic 

    flt_onn
    Onshore line geologic features

    TYPE
    Type of linear geologic feature

    ValueDefinition
     
    Detachment fault 
    Fault 
    Shore 
    Strike-slip fault 
    Thrust Fault 

    G
    Working code for digitizing

    ValueDefinition
    0needed correction
    4final

    POS
    Code for spatial line feature position

    ValueDefinition
     
    ononshore
    sshoreline

    ARC_SYM
    ArcInfo line symbol codes to draw in ArcEdit

    Range of values
    Minimum:0
    Maximum:5

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

    General guidance - Gregory Ulmishek
Digital Geologic Map Compilation in Arc/Info - Feliks Persits
Legend design -Feliks Persits and Gregory Ulmishek
Geologic Attribution - Feliks Persits
Implementation of Metadata- Feliks Persits
Arcview and ArcExplorer projects - Feliks Persits
Map design and verification - Feliks Persits and Gregory Ulmishek
CD-ROM implementation - Feliks Persits

  3. To whom should users address questions about the data?

    Dr. Thomas Ahlbrandt
    U.S. Geological Survey, Central Energy Resource Team
    Project Chief
    Denver Federal Center, MS 939 P.O.Box 25046
    Denver, Colorado 80225
    USA

    303-236-5776 (voice)
    303-236-8822 (FAX)
    ahlbrandt@usgs.gov

Why was the data set created?

The data provide government, geologic community, consultants, and the general public with the geological basis for small scale natural resource surveys, exploration, and analysis.

How was the data set created?

  1. From what previous works were the data drawn?

    Original paper map (source 1 of 5)
    A. V. Okulitch (compiler, editor), B. G. Lopatin (compiler, editor), and H. R. Jackson (compiler, editor), 1989, Circumpolar geologic map of the Arctic: Map 1765-A, Geological Survey of Canada, Ottawa, ON.

    Type_of_Source_Media: paper
    Source_Scale_Denominator: 6000000
    Source_Contribution:
    Paper map sheet was used as the source for the ARC/INFO geology coverage arc_geotf.

    Centerpoints of oil and gas fields (source 2 of 5)
    IHS Energy Group (Petroconsultants)., 2001, Probe 4.0 World Oil and Gas Database: Petroleum Information/Dwights LLC d/b/a/IHS Energy Group, Englewood, Colorado, USA (this version).

    Other_Citation_Details:
    World oil and gas field centerpoints were clipped by Arctic geology coverage. All the attributes except standard ArcView items were deleted.
    Type_of_Source_Media: Installed enterprise database
    Source_Contribution:
    Centerpoints of oil and gas fields were converted to ArcInfo coverage, reprojected to Polar Stereographic projection, and clipped by extent of geology coverage. All the attributes except standard GIS items were deleted.

    bathymetric contours (source 3 of 5)
    International Oceanographic Commission (IOC), and National Oceanic and Atmospheric Administration (NOAA), 2001, International Bathymetric Chart of the Arctic Ocean (IBCAO): IBCAO Version 1.0 created 2001-07-11, U.S. National Geophysical Data Center (NGDC), Boulder, CO.

    Online Links:

    • http:/www.ngdc.noaa.gov/mgg/bathymetry/arctic/arctic.html

    Other_Citation_Details:
    This project is result of efforts of eleven institutions in eight countries: Canada, Denmark, Germany, Iceland, Norway, Russia, Sweden, and the USA
    Type_of_Source_Media: Internet
    Source_Scale_Denominator: 6000000
    Source_Contribution:
    The external source of bathymetric data in ArcView shape file format bath_str.shp

    reference source geologic coverage (source 4 of 5)
    Geological Survey of Canada, 1996, Geological Map of Canada: Map D1860A, Geological Survey of Canada, Ottawa, ON.

    Type_of_Source_Media: CD-ROM
    Source_Scale_Denominator: 5000000
    Source_Contribution:
    Geologic Map of Canada used as reference source in verification and correction geologic attributes of Arctic geology ARC/INFO coverage.

    Shoreline, rivers and country boundaries (source 5 of 5)
    ESRI, 1992-1996, ArcWorld 1:3 million geographic data set.: ArcWorld ArcWorld 1:3M, ArcWorld Supplement, ESRI, Redlands, CA, USA.

    Other_Citation_Details:
    There are many informational layers in this data set. Coordinates are latitude and longitude in decimal degrees.
    Type_of_Source_Media: CD-ROM
    Source_Scale_Denominator: 3000000
    Source_Contribution:
    The external reference source for image georeferencing in ARC/INFO. 
    shore_st - shorelines
riv_str - river and lakes
ctry_str - country boundaries

  2. How were the data generated, processed, and modified?

    Date: Jan-2002 (process 1 of 1)
    Scan original paper map on a large format scanner in gray-scale mode.
    Gray-scale image was transformed to Polar Stereographic projection by second order polynomial transformation using latitude-longitude crosses (ArcInfo GRIDWARP and ADJUST utilities).
    Georeferenced image was processed by a number of piece-wise rubber sheeting transformations using ESRI shoreline as a reference (ArcInfo ADJUST utility).
    Digitization of geologic line and polygon features to create ArcInfo coverage
    Geologic age, lithology attributes and line geologic features were assigned to ArcInfo coverage
    Digital Geological Map of Canada in ArcInfo Export format (.e00) was transformed to polar stereographic projection, merged from adjacent pieces into single coverage and clipped using Arctic geology ArcInfo coverage.
    Geologic age attributes of projected, combined and clipped geologic map of Canada ArcInfo coverage (more than 600 unique values) were converted to corresponding age values of Circumpolar Geologic Map of the Arctic.
    Verification and correction of geologic attributes for Circumpolar Geologic map of the Arctic coverage by using Geologic map of Canada coverage with converted age attribute as backdrop in ArcInfo ArcEdit 8.0.1
    ArcView shape files for onshore geology and line features were created from corrected ArcInfo coverage using "POS" item.

    Person who carried out this activity:

    Feliks Persits
    GIS Contractor
    U.S. Geological Survey
    P.O. Box 25046, MS 939
    Denver Federal Center
    Denver, Colorado 80225
    USA

    303-236-3612 (voice)
    303-236-8822 (FAX)
    fpersits@usgs.gov

  3. What similar or related data should the user be aware of?

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

    Overall accuracy is based on accuracy of general geology coverage. Because all the attributes are of character type, only correctness of polygon labeling can be provided (see below).
    1. Attribute items "AGE_OR", "LI_TYPE" are abstracted from fill colors and patterns of source map denoting geologic age. Offshore and onshore units are attributed separately and can be displayed selectively by "POS" item.
    2. Rigorous verification and comparison of geologic attributes with other paper and digital maps were carried out on Canadian and Alaskan parts of the map.
    3. Standard verification of attribute reliability was performed with the Arc/Info command LABELERRORS to find polygons without assigned character value or with more than one value. A comparison between color plot and original paper map was carried out by on-screen visual examination. The coverages were superimposed on a registered and rectified gray-scale scanned image of the original map and inspected. All evident errors detected in attributes were corrected.
    4. Two attribute items have been added: ERROR and CHECK. The first stands for evident error on original paper map, the second one - geologic attribute was assigned with level of uncertainty (color and pattern do not coincide).

  2. How accurate are the geographic locations?

    The scanned gray-scale image of original paper map was transformed to Polar Stereographic projection by polynomial transformation of second order with RMS error not more than 2500 m (0.37 mm in original paper map). That was the first step. The second step was a piece-wise rubber sheeting transformation of the image using ESRI's shoreline as a reference.
    There are three main considerations to assess overall positional accuracy:
    1. Thickness of a shoreline on the image varies from 2500 to 4500 meters. Therefore maximum shift of a line in a coverage from centerline of its copy on image should not exceed 1250-2250 m. Since shoreline has been used to georeference image, this value affects overall accuracy.
    2. Shoreline has been digitized from the original geologic map and based on data from General Bathymetric Map of Ocean (1983 data). ESRI shoreline is based on the Digital Chart of the World (1992-1996 data) and is more detailed and updated. Because of these different compilations there was mismatch in large scale patterns of two shorelines with good general match.
    3. Overall accuracy is estimated by measuring distance between these two shoreline versions at randomly chosen locations. The RMS error is 2450 m (0.36 mm of original paper map) with maximum mismatch of 6.5 km. This mismatch does not include areas where newer ESRI shoreline reveals new details. The final georeferenced image was used as a backdrop in ARCEDIT digitizing.

  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

    All unique geologic age subdivisions (104 values) plus eight (8) lithologic subdivisions from the original geologic map were reproduced in ArcInfo coverage.

  5. How consistent are the relationships among the observations, including topology?

    The data set originated from a collection of ARC/INFO coverages that were topologically consistent. The fuzzy tolerance was consistent through each processing step (200 m or 0.002 degree). Based on this fuzzy tolerance value, all undershoots and overshoots were detected and deleted. Execution of Arc/Info CLEAN command indicated the original coverage is topologically clean. Duplicate lines, overshoots and undershoots, if any, were corrected. All polygons are closed and labeled. Polygons at the edge of the map are closed with a map outer polygon.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints: None
Use_Constraints:
Coverages covering shoreline, rivers and lakes, and country boundaries contain intellectual property of Environmental Systems Research Institute, Inc. (ESRI), and are used with their permission.
Coverages covering oil and gas fields centerpoints contain intellectual property of IHS Energy Group (Petroconsultants), and are used with their permission. End users are permitted to use these data sets for their own internal use, including derivative work, but are prohibited from redistributing these data individually or in a derivative work to third parties.

  1. Who distributes the data set? (Distributor 1 of 1)

    U.S. Geological Survey, Central Energy Resources Team
    c/o Christa Lopez
    Team Secretary
    U.S.Geological Survey, Box 25046 MS 939 Building 25 Denver Federal
    Center
    Denver, CO 80225
    U.S.A.

    303-236-1647 (voice)
    eteamdisks@usgs.gov

  2. What's the catalog number I need to order this data set?

    USGS Open-File Report 97-470J

  3. What legal disclaimers am I supposed to read?

    This publication was prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employee, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report, or represent that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessary constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof.

  4. How can I download or order the data?

Who wrote the metadata?

Dates:
Last modified: 27-Mar-2001
Metadata author:
U.S. Geological Survey
c/o David A. Ferderer
Data library manager, Central Energy Resources Team
U.S. Geological Survey, MS 939
Box 25046 Denver Federal Center
Denver, CO 80225-0046

(303) 236-3611 (voice)
(303) 236-8822 (FAX)
dferdere@usgs.gov

Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)

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