Geologic map of the Dalton Highway (Atigun Gorge to Slope Mountain) area, southern Arctic Foothills, Alaska

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Frequently-anticipated questions:


What does this data set describe?

Title:
Geologic map of the Dalton Highway (Atigun Gorge to Slope Mountain) area, southern Arctic Foothills, Alaska
Abstract:
This report provides detailed mapping (1:63,360-scale) in the Dalton Highway area, from Atigun Gorge to Slope Mountain, in the west-central Philip Smith Mountains quadrangle. The map area extends from the northern flank of the Endicott Mountains into the Arctic Foothills province.
Supplemental_Information:
The layers listed below are present as ArcGIS shape files. To enhance print quality, this publication utilized a vector topography dataset. The topography dataset is included with this release but is documented in a separate metadata file named, "PIR2002-2_topo.faq.html." Attribute information for the following layers (entities) is included in this metadata file under the "Entity_and_Attribute_Information" section. Each layer is listed and described in detail under its own heading starting "Entity_Type_Label." Basic unit information is also included in the geologic unit code set file "PIR2002-2_codeset.pdf". Layers include:
bedrock_arc     geologic unit contacts
bedrock_poly      geologic unit polygons
kc_chrt_point     point locations of Buchia limestone coquina and Imnaitchiak Chert boulders
motion_point     symbols showing relative motion and/or orientation of structural elements
qal_af_poly     polygons indicating location of aufeis
strike_dip_point     point locations of bedding and foliation orientation data
structure_arc     line symbols depicting the location of traceable beds, faults, and axial traces of folds
  1. How should this data set be cited?

    Harris, E.E., Mull, C.G., Reifenstuhl, R.R., and Montayne, Simone, 2002, Geologic map of the Dalton Highway (Atigun Gorge to Slope Mountain) area, southern Arctic Foothills, Alaska: Preliminary Investigative Report PIR 2002-2, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (DGGS), Fairbanks, AK, USA.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -150.000000
    East_Bounding_Coordinate: -149.000000
    North_Bounding_Coordinate: 68.779444
    South_Bounding_Coordinate: 68.439167

  3. What does it look like?

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

    Beginning_Date: 1984
    Ending_Date: 2002
    Currentness_Reference: June 2002 (publication date)

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

    Geospatial_Data_Presentation_Form: Map and vector digital data

  6. How does the data set represent geographic features?

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

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

      Grid_Coordinate_System_Name: Universal Transverse Mercator
      Universal_Transverse_Mercator:
      UTM_Zone_Number: 6
      Transverse_Mercator:
      Scale_Factor_at_Central_Meridian: 0.999600
      Longitude_of_Central_Meridian: 147.000000
      Latitude_of_Projection_Origin: 0.000000
      False_Easting: 500000.000000
      False_Northing: 0.000000

      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 0.000064
      Ordinates (y-coordinates) are specified to the nearest 0.000064
      Planar coordinates are specified in meters

      The horizontal datum used is North American Datum of 1927.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6,378,206.4.
      The flattening of the ellipsoid used is 1/294.98.

  7. How does the data set describe geographic features?

    bedrock_arc.shp
    Object type is vector, there are 2,023 rows associated with this entity, and the entity values refer to geologic unit contacts. (Source: Alaska Division of Geological & Geophysical Surveys)

    SYMBOL
    Geologic contact classification (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    0geologic unit contact location certain
    5geologic unit contact location certain
    1geologic unit contact location approximate
    2geologic unit contact location concealed

    bedrock_poly.shp
    Object type is vector, there are 494 rows associated with this entity, and the entity values refer to bedrock and surficial geologic polygons (Source: Alaska Division of Geological & Geophysical Surveys)

    UNIT
    bedrock and surficial unit labels (Source: Alaska Division of Geological & Geophysical Surveys)

    Formal codeset
    Codeset Name:PIR2002-2_codeset.pdf
    Codeset Source:Alaska Division of Geological & Geophysical Surveys <http://www.dggs.alaska.gov/metadata/PIR2002-2_codeset.pdf>

    kc_chrt_point.shp
    Object type is point, there are 24 rows associated with this entity, and the entity values refer to locations of Imnaitchiak Chert boulders or Buchia limestone coquina. (Source: Alaska Division of Geological & Geophysical Surveys)

    SYMBOL
    Designates either Imnaitchiak Chert boulders or Buchia limestone coquina (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    JlPiImnaitchiak Chert boulders
    KcBuchia limestone coquina

    motion_point.shp
    Object type is point, there are 63 rows associated with this entity, and the entity values refer to label points of map symbols that indicate relative motion and/or orientation of structural elements. (Source: Alaska Division of Geological & Geophysical Surveys)

    SYMBOL
    type of map symbol (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    0anticline symbol
    1plunge symbol
    2strike slip fault
    3marks where the fault trace can no longer be mapped
    4syncline symbol
    5Location of a numeric symbol indicating angle of plunge measured or estimated downward from horizontal
    6overturned fault symbol
    7overturned anticline symbol
    8symbol indicating that the northern side of a fault is down-thrown
    9symbol indicating that the southwestern side of a fault is down-thrown

    ANGLE
    This field contains the rotation angle data that corresponds with each symbol class contained in the "SYMBOL" field of this table. Proper orientation of depicted map symbols varies according to its "SYMBOL" field value. Label points with "SYMBOL" field values of "0, 2, 4, 7, 8, or 9" are rotated such that when the long axis of the standard geologic map symbol for this entity is vertical, with single sided arrows (if applicable) pointing due South, the "ANGLE" field value is "180". Label points with a "SYMBOL" field value of "1" would yield an "ANGLE" field value of "270" when depicting an arrow pointed due South. Label points with a "SYMBOL" field value of "3" would appear upright and vertical when depicted as a "?". Label points with a "SYMBOL" field value of "5" are label placeholders for numeric values listed in the "LABEL" field of this table and do not require any particular orientation. Label points with a "SYMBOL" field value of "6" would yield an "ANGLE" field value of "90" when depicting an arrow pointed due South. (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:0
    Maximum:360
    Units:degrees

    LABEL
    Numeric symbol indicating angle of plunge measured or estimated downward from horizontal. A null value in this field indicates that either these data were not obtained or this measurement is not applicable to the "SYMBOL" type displayed at that particular label point. (Source: Alaska Division of Geological & Geophysical Surveys and others (see reference attribute information))

    Range of values
    Minimum:0
    Maximum:90
    Units:degrees

    qal_af_poly.shp
    Object type is vector, there are 2 rows associated with this entity, and the entity values refer to location and extent of aufeis. (Source: Alaska Division of Geological & Geophysical Surveys)

    strike_dip_point.shp
    Object type is point, there are 268 rows associated with this entity. Entity values refer to bedding and foliation orientation data (Source: Alaska Division of Geological & Geophysical Surveys)

    TYPE
    Indicates class of measurement and/or type of geologic feature. (Source: Alaska Division of Geological & Geophysical Surveys and others (see reference attribute information))

    ValueDefinition
    0bedding plane strike and dip
    2approximated bedding plane strike and dip
    3cleavage strike and dip
    4bedding plane strike and dip lineation plunge measurement
    5strike and dip of overturned beds
    6strike and dip of bed overturned 240 degrees
    7vertical beds
    8overturned thrust fault
    9multiple minor folds showing trace of axial plane and direction of plunge

    DIP
    Degrees that a plane is inclined relative to horizontal as measured 90 degrees clockwise from strike; horizontal being 0 degrees and vertical being 90 degrees. (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:0
    Maximum:90
    Units:degrees

    unique number "999" that indicates a null value for this field

    PLUNGE
    Numeric symbol indicating angle of plunge measured or estimated downward from horizontal. A null value in this field indicates that either these data were not obtained or this measurement is not applicable to the "TYPE" category that is displayed at that particular label point. (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:0
    Maximum:90
    Units:degrees

    ANGLE
    This field contains the rotation angle data that corresponds with each symbol class contained in the "TYPE" field of this table. Proper orientation of depicted map symbols varies according to its "TYPE" field value. For "TYPE" field values of "0, 2, 3, or 4" the "ANGLE" field value corresponds to standard Azimuth compass values measured using the "right hand rule." For "TYPE" field values of "5, 6, 7, or 8" the "ANGLE" field value corresponds to a numeric value that is rotated ninety degrees clockwise from the standard Azimuth compass values measured using the "right hand rule." For example, an "ANGLE" field value of "0" would indicate a bedding plane oriented East-West. For a "TYPE" field value of "9" the "ANGLE" field value corresponds to a numeric value that is rotated ninety degrees counter clockwise from the standard Azimuth compass values measured using the "right hand rule." For example, an "ANGLE" field value of "0" would indicate a bedding plane oriented East-West with arrows pointing to the West. (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:0
    Maximum:360
    Units:degrees

    structure_arc.shp
    Object type is vector, there are 429 rows associated with this entity, and the entity values refer to faults, traceable beds, and axial traces of folds. (Source: Alaska Division of Geological & Geophysical Surveys)

    TYPE
    structural feature type (Source: Alaska Division of Geological & Geophysical Surveys and others (see reference attribute information))

    ValueDefinition
    0traceable bed
    2fold axis
    3fault, inferred
    4concealed fault, location uncertain
    5inferred fault, location uncertain
    6thrust fault, user will need to see paper publication for interpretation of relative plate motion
    7inferred thrust fault, user will need to see paper publication for interpretation of relative plate motion
    8inferred major thrust fault bounding structural provinces, user will need to see paper publication for interpretation of relative plate motion
    9fold, approximately located
    10fault, concealed
    11fault, certain
    12inferred thrust fault, location uncertain, user will need to see paper publication for interpretation of relative plate motion
    13major fault bounding structural provinces, concealed
    14major fault bounding structural provinces


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?

    Funding for the geologic mapping and geochronologic dating performed for this project was provided by the U.S. Geological Survey STATEMAP Program under award number 03HQAG0055 and by the Alaska State Legislature. Geologic field investigations by: C.G. Mull1 (1984-1987, 1989-1994 1999-2001); E.E. Harris (1984-1985, 1992, 1999-2001); R.R Reifenstuhl1 (1991-1992, 1994, 2000-2001); R.K. Glenn (1989); K.E. Adams (1984-1985); D.A. Bodnar (1983); J.P. Siok (1983); D.L. LePain (2001); M.A. Wartes (2001); T.J. Ryherd (1989, 1992, 2001); R.K. Crowder (1984); Paige R. Peapples (2001); R.A. Kirkham (1999-2001); Simone Montayne (2001); M.B. Mickey5 (2000); and M.T. Whalen (2001); R.B. Blodgett(2001); Art Banet (2000); Landon Kelly (2001). Technical review by: J.G. Clough. Digital cartography by: Simone Montayne. Edited by: Paula K. Davis

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

    State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
    GIS Data Manager/Cartographer
    3354 College Road
    Fairbanks, AK 99709-3707
    USA

    (907) 451-5029 (voice)
    (907) 451-5050 (FAX)
    dggspubs@alaska.gov

    Contact_Instructions:
    You may view our web site at <http://www.dggs.alaska.gov> for the latest information on available data. Please e-mail your questions and data requests when possible since our web site and e-mail address will remain current even if our phone number and mailing address change.


Why was the data set created?

The geologic map of the of the Dalton Highway area from Atigun Gorge to Slope Mountain is one of a series of geologic maps selected by the Alaska Division of Geological & Geophysical Surveys (DGGS) for detailed mapping (1:63,360-scale) to document important stratigraphic and structural relationships at the Brooks Range mountain front and in the adjacent northern foothills. New detailed geologic mapping of the quadrangle will provide stratigraphic control to document the transition from units in NPRA to units in ANWR and help correlate rocks in these areas to the Prudhoe Bay oilfield.


How was the data set created?

  1. From what previous works were the data drawn?

    Brosgé and others, 1979 (source 1 of 47)
    Brosgé, W.P., Reiser, H.N., Dutro Jr., J.T., and Detterman, R.L., 1979, Bedrock geologic map of the Philip Smith Mountains quadrangle, Alaska: Miscellaneous Field Studies Map MF 879-B, U.S. Geological Survey, Reston, VA, USA.

    Other_Citation_Details: 2 sheets
    Type_of_Source_Media: map
    Source_Scale_Denominator: 250000
    Source_Contribution:
    This regional scale map contains geologic unit descriptions and outcrop locations and was used to plan traverses and help define geologic units.

    Glenn, 1991 (source 2 of 47)
    Glenn, R.K., unpublished material, Range-front structure and lithostratigraphy of the Atigun Gorge area, north-central Brooks Range, Alaska, Unpublished Master's Thesis.

    Other_Citation_Details:
    Unpublished Master's Thesis: University of Alaska Fairbanks, 86 pages, 2 sheets
    Type_of_Source_Media: report, figures
    Source_Scale_Denominator: 24847
    Source_Contribution:
    This report contains geologic unit descriptions and was used to help plan traverses in the map area.

    Hamilton, 2003 (source 3 of 47)
    Hamilton, T.D., 2003, Surficial geology of the Dalton Highway (Itkillik-Sagavanirktok Rivers) area, southern Arctic Foothills, Alaska: Professional Report PR 121, Alaska Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.

    Online Links:

    Other_Citation_Details: 32 pages, 1 sheet
    Type_of_Source_Media: report, map
    Source_Scale_Denominator: 63360
    Source_Contribution:
    This map was the primary source for distribution and description of the surficial units for this map.

    Mull and others, 2002 (source 4 of 47)
    Mull, C.G., Harris, E.E., and Peapples, Paige, unpublished material, Geology of the Cobblestone Creek-May Creek area, central Brooks Range foothills, Alaska: Report of Investigation in press.

    Online Links:

    • none

    Other_Citation_Details: 20 pages, 1 sheet
    Type_of_Source_Media: report, map
    Source_Scale_Denominator: 63360
    Source_Contribution:
    This report and map contains structural and descriptions of geologic units that extend westward of the map area.

    Mull and others, 2003 (source 5 of 47)
    Mull, C.G., Houseknecht, D.W., and Bird, K.J., 2003, Revised Cretaceous and Tertiary stratigraphic nomenclature in the east-central Colville basin, northern Alaska: Professional Paper 1673, U.S. Geological Survey, Reston, VA USA.

    Other_Citation_Details: 51 pages
    Type_of_Source_Media: report
    Source_Contribution:
    This report defines nomenclature used for Cretaceous and Tertiary rocks in this map area.

    Mull and others, 1994 (source 6 of 47)
    Mull, C.G., Moore, T.E., Harris, E.E., and Tailleur, I.L., 1994, Geologic map of the Killik River quadrangle, Brooks Range, Alaska: Open File Report OF 94-679, U.S. Geological Survey, Washington, DC, USA.

    Other_Citation_Details: 1 sheet
    Type_of_Source_Media: map
    Source_Scale_Denominator: 125000
    Source_Contribution:
    This map contains bedrock unit descriptions, in particular of the Ipnavik and Picnic Creek allochthons, that helped with the interpretation on units in this map area.

    Reifenstuhl and others, 1993 (source 7 of 47)
    Reifenstuhl, R.R., Mull, C.G., Pessel, G.H., and Myers, M.D., 1993, Preliminary bedrock geologic map of the Philip Smith Mountains C-4 Quadrangle, northeastern Brooks Range, Alaska: Public Data File PDF 93-30C, Alaska Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.

    Online Links:

    Other_Citation_Details: 11 p., 1 sheet
    Type_of_Source_Media: report, map
    Source_Scale_Denominator: 63360
    Source_Contribution:
    This map overlaps in part with this work and directly contributed to some of the map units.

    USGS, Philip Smith Mountains (B-4) (source 8 of 47)
    USGS, 1971, Philip Smith Mountains (B-4), Alaska: U.S. Geological Survey, Reston, VA, USA.

    Other_Citation_Details: 1 sheet
    Type_of_Source_Media: map
    Source_Scale_Denominator: 63360
    Source_Contribution: Topographic base-map

    USGS, Philip Smith Mountains (C-4) (source 9 of 47)
    USGS, 1971, Philip Smith Mountains (C-4), Alaska: U. S. Geological Survey, Reston, VA, USA.

    Other_Citation_Details: 1 sheet
    Type_of_Source_Media: map
    Source_Scale_Denominator: 63360
    Source_Contribution: Topographic base-map

    USGS, Philip Smith Mountains (D-4) (source 10 of 47)
    USGS, 1971, Philip Smith Mountains (D-4), Alaska: U.S. Geological Survey, Reston, VA, USA.

    Other_Citation_Details: 1 sheet
    Type_of_Source_Media: map
    Source_Scale_Denominator: 63360
    Source_Contribution: Topographic base-map

    USGS, Philip Smith Mountains (B-5) (source 11 of 47)
    USGS, 1971, Philip Smith Mountains (B-5), Alaska: U.S. Geological Survey, Reston, VA, USA.

    Other_Citation_Details: 1 sheet
    Type_of_Source_Media: map
    Source_Scale_Denominator: 63360
    Source_Contribution: Topographic base-map

    USGS, Philip Smith Mountains (C-5) (source 12 of 47)
    USGS, 1971, Philip Smith Mountains (C-5), Alaska: U.S. Geological Survey, Reston, VA, USA.

    Other_Citation_Details: 1 sheet
    Type_of_Source_Media: map
    Source_Scale_Denominator: 63360
    Source_Contribution: Topographic base-map

    USGS, Philip Smith Mountains (D-5) (source 13 of 47)
    USGS, 1971, Philip Smith Mountains (D-5), Alaska: U.S. Geological Survey, Reston, VA, USA.

    Other_Citation_Details: 1 sheet
    Type_of_Source_Media: map
    Source_Scale_Denominator: 63360
    Source_Contribution: Topographic base-map

    Adams, 1991 (source 14 of 47)
    Adams, K.E., unpublished material, Permian sedimentation in the north-central Brooks Range, Alaska: Implications for tectonic reconstructions.

    Other_Citation_Details:
    Unpublished Master's Thesis: University of Alaska Fairbanks, 11 pages, 1 sheet
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to understanding sedimentation and stratigraphy, to map and define units, in the map area.

    Adams and others, 1997 (source 15 of 47)
    Adams, K.E., Mull, C.G., and Crowder, R.K., 19970910, Permian deposition in the north central Brooks Range, Alaska: Constraints for tectonic reconstructions: Journal of Geophysical Research v. 102, n. B9, American Geophysical Union, Washington, D.C, USA.

    Other_Citation_Details: p. 20727-20748
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to the structural interpretation of this map.

    Ahlbrandt and others, 1979 (source 16 of 47)
    Ahlbrandt, T.S., Huffman Jr., A.C., Fox, J.E., and Pasternack, Ira, 1979, Depositional framework and reservoir quality studies of selected Nanushuk Group outcrops, North Slope, Alaska:.

    This is part of the following larger work.

    Ahlbrandt, T.S. (ed.), 1979, Preliminary geologic, petrologic, and paleontologic results of the study of Nanushuk Group rocks, North Slope, Alaska: Circular 794, U.S. Geological Survey, Reston, VA, USA.

    Other_Citation_Details: p. 14-31
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to understanding sedimentation and stratigraphy, to map and define units, in the map area.

    Bartsch-Winkler, 1985 (source 17 of 47)
    Bartsch-Winkler, Susan, 1985, Petrography of sandstones of the Nanushuk Group from four measured sections, central Brooks Range, Alaska:.

    This is part of the following larger work.

    Huffman Jr., A.C. (ed.), 1985, Geology of the Nanushuk Group and related rocks, North Slope, Alaska: Bulletin 1614, U.S. Geological Survey, Reston, VA, USA.

    Other_Citation_Details: pages 75-95
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to understanding sedimentation and stratigraphy, to map and define units, in the map area.

    Bird and Molenaar, 1992 (source 18 of 47)
    Bird, K.J., and Molenaar, K.M., 1992, The North Slope Foreland Basin, Alaska:.

    This is part of the following larger work.

    Macqueen, R.W. (ed.), and Leckie, D.A. (ed.), 1992, Foreland Basins and Fold Belts: American Association of Petroleum Geologists Memoir 55.

    Other_Citation_Details: p. 363-393
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to the understanding the depositional system of the foreland and Colville basin.

    Bodnar, 1989 (source 19 of 47)
    Bodnar, D.A., 1989, Stratigraphy of the Otuk Formation and a Cretaceous coquinoid and shale unit, north-central Brooks Range:.

    This is part of the following larger work.

    Mull, C.G. (ed.), and Adams, K.E. (ed.), 1989, Bedrock geology of the eastern Koyukuk Basin, central Brooks Range, and eastcentral Arctic Slope along the Dalton Highway, Yukon River to Prudhoe Bay, Alaska: Guide Book GB 7 v. 2.

    Online Links:

    Other_Citation_Details: p. 277-284
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to understanding sedimentation and stratigraphy, to map and define units, in the map area.

    Bodnar, 1984 (source 20 of 47)
    Bodnar, D.A., unpublished material, Stratigraphy, age, depositional environments, and hydrocarbon source rock evaluation of the Otuk Formation, north-central Brooks Range, Alaska.

    Other_Citation_Details:
    Unpublished Master's Thesis: University of Alaska Fairbanks, 232 pages
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to understanding sedimentation and stratigraphy, to map and define units, in the map area.

    Brosgé and Moore, 1993 (source 21 of 47)
    Brosgé, W.P., and Moore, T.H., 1988, Geology of the Upper Devonian and Lower Mississippian(?) Kanayut Conglomerate in the central and eastern Brooks Range, Alaska:.

    This is part of the following larger work.

    Gryc, George (ed.), 1988, Geology and exploration of the National Petroleum Reserve in Alaska: Professional Paper 1399.

    Other_Citation_Details: p. 299-316
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to understanding sedimentation and stratigraphy, to map and define units, in the map area.

    Cole and others, 1997 (source 22 of 47)
    Cole, Frances, Bird, K.J., Toro, J., Roure, F., O'Sullivan, P.B., Pawlewicz, M., and Howell, D.G., 1997, An integrated model for the tectonic development of the frontal Brooks Range and Colville basin 250 km west of the Trans-Alaska Crustal Transect: Journal of Geophysical Research v. 102, n.B9, American Geophysical Union, Washington, D.C., USA.

    Other_Citation_Details: p. 20685-20708
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to the structural interpretation this map.

    Crowder, 1993 (source 23 of 47)
    Crowder, R.K., 1987, Cretaceous basin to shelf transition in northern Alaska: deposition of the Fortress Mountain Formation:.

    This is part of the following larger work.

    Tailleur, I.L. (ed.), and Weimer, Paul (ed.), 1987, Alaskan North Slope Geology: Society of Economic Paleontologists and Mineralogists, Pacific Section, and Alaska Geological Society v. 1.

    Other_Citation_Details: p. 449-458
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to understanding sedimentation and stratigraphy, to map and define units, in the map area.

    Crowder, 1989 (source 24 of 47)
    Crowder, R.K., 1989, Deposition of the Fortress Mountain Formation:.

    This is part of the following larger work.

    Mull, C.G. (ed.), and Adams, K.E. (ed.), 1989, Dalton Highway, Yukon River to Prudhoe Bay, Alaska: Bedrock Geology of the eastern Koyukuk basin, central Brooks Range, and east-central Arctic Slope: Alaska: Guide Book GB 7 v. 2.

    Online Links:

    Other_Citation_Details: p. 293-301
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to understanding sedimentation and stratigraphy, to map and define units, in the map area.

    Detterman, 1956 (source 25 of 47)
    Detterman, R.L., 1956, New and refined nomenclature of Nanushuk Group: American Association of Petroleum Geologists Bulletin v. 40, n. 2.

    Other_Citation_Details: p. 233-244
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to understanding sedimentation and stratigraphy, to map and define units, in the map area.

    Dumoulin and others, 1997 (source 26 of 47)
    Dumoulin, J.A., Watts, K.F., and Harris, A.G., 1997, Stratigraphic contrasts and tectonic relationships between Carboniferous successions in the Trans-Alaska Crustal Transect corridor and adjacent areas, northern Alaska: Journal of Geophysical Research v. 102, n. B9, American Geophysical Union, Washington, D.C., USA.

    Other_Citation_Details: p. 20709-20726
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to understanding sedimentation and stratigraphy, to map and define units, in the map area.

    Gryc and others, 1951 (source 27 of 47)
    Gryc, George, Patton Jr., W.W., and Payne, T.G., 1951, Present Cretaceous stratigraphic nomenclature of northern Alaska: Journal of Washington Academy of Sciences v. 41.

    Other_Citation_Details: p. 159-167
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to understanding sedimentation and stratigraphy, to map and define units, in the map area.

    Huffman and others, 1985 (source 28 of 47)
    Huffman Jr., A.C., Ahlbrandt, T.S., Pasternack, Ira, Strickler, G.D., and Fox, J.E., 1985, Depositional and sedimentologic factors affecting the reservoir potential of the Cretaceous Nanushuk Group, central North Slope, Alaska:.

    This is part of the following larger work.

    Huffman Jr., A.C. (ed.), 1985, Geology of the Nanushuk Group and related rocks, North Slope, Alaska: Bulletin 1614, U.S. Geological Survey, Reston, VA, USA.

    Other_Citation_Details: p. 61-74
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to understanding sedimentation and stratigraphy, to map and define units, in the map area.

    LePain and others, 2002 (source 29 of 47)
    LePain, D.L., Kirkham, R., and McCarthy, P.J., 2002, Shoreline to basin transition (?) in Albian-Cenomanian strata east of the Sagavanirktok River, Brooks Range Foothills, Alaska, Northern Alaska: Energy Frontiers - A 2002 Perspective: Program and Abstracts, American Association of Petroleum Geologists and Society of Petroleum Engineers none.

    Other_Citation_Details: 87 pp.
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to understanding sedimentation and stratigraphy, to map and define units, in the map area.

    Molenaar, 1985 (source 30 of 47)
    Molenaar, C.M., 1985, Subsurface correlations and depositional history of the Nanushuk Group and related strata, North Slope, Alaska:.

    This is part of the following larger work.

    Huffman Jr., A.C. (ed.), 1985, Geology of the Nanushuk Group and related rocks, North Slope, Alaska: Bulletin 1614, U.S. Geological Survey, Reston, VA, USA.

    Other_Citation_Details: p. 37-59
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to understanding sedimentation and stratigraphy, to map and define units, in the map area.

    Molenaar and others, 1981 (source 31 of 47)
    Molenaar, C.M., Egbert, R.M., and Krystinik, L.F., 1981, Depositional facies, petrography, and reservoir potential of the Fortress Mountain Formation (Lower Cretaceous), central North Slope, Alaska: Open File Report 81-967, U.S. Geological Survey, Reston, VA, USA.

    Other_Citation_Details: 32 pp.
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to understanding sedimentation and stratigraphy, to map and define units, in the map area.

    Moore and others, 1989 (source 32 of 47)
    Moore, T.E., Nilsen, T.H., and Brosgé, W.P., 1989, Sedimentology of the Kanayut Conglomerate:.

    This is part of the following larger work.

    Mull, C.G. (ed.), and Adams, K.E. (ed.), 1989, Dalton Highway, Yukon River to Prudhoe Bay, Alaska: Bedrock Geology of the eastern Koyukuk basin, central Brooks Range, and east-central Arctic Slope: Alaska: Guide Book GB 7 v. 2.

    Online Links:

    Other_Citation_Details: p. 219-252
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to understanding sedimentation and stratigraphy, to map and define units, in the map area.

    Moore and others, 1997 (source 33 of 47)
    Moore, T.E., Wallace, W.K., Mull, C.G., Adams, K.E., Plafker, George, and Nokleberg, W.J., 1997, Crustal implications of bedrock geology along the Trans-Alaska Crustal Transect (TACT) in the Brooks Range, northern Alaska: Journal of Geophysical Research v. 102, n. B9, American Geophysical Union, Washington, D.C., USA.

    Other_Citation_Details: p. 20645-20684
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to the structural interpretation of this map.

    Moore and others, 1994 (source 34 of 47)
    Moore, T.E., Wallace, W.K., Bird, K.J., Karl, S.M., Mull, C.G., and Dillon, J.T., 1994, Geology of Northern Alaska:.

    This is part of the following larger work.

    Plafker, George (ed.), and ed., H.C. Berg , 1994, The Geology of Alaska: The Geology of North America: Geological Society of America v. G-1.

    Other_Citation_Details: p. 49-140
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to understanding the regional framework of the map area.

    Mull, 1985 (source 35 of 47)
    Mull, C.G., 1985, Cretaceous tectonics, depositional cycles, and the Nanushuk Group, Brooks Range and the Arctic Slope, Alaska:.

    This is part of the following larger work.

    Huffman Jr., A.C. (ed.), 1985, Geology of the Nanushuk Group and related rocks, North Slope, Alaska: Bulletin 1614, U.S. Geological Survey, Reston, VA, USA.

    Other_Citation_Details: pages 7-36
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to understanding sedimentation and stratigraphy, to map and define units, in the map area

    Mull, 1989 (source 36 of 47)
    Mull, C.G., 1989, Generalized stratigraphy and structure of the Brooks Range and Arctic Slope:.

    This is part of the following larger work.

    Mull, C.G. (ed.), and Adams, K.E. (ed.), 1989, Dalton Highway, Yukon River to Prudhoe Bay, Alaska: Bedrock Geology of the eastern Koyukuk basin, central Brooks Range, and east-central Arctic Slope: Alaska: Guide Book GB 7 v. 2.

    Online Links:

    Other_Citation_Details: pages 31-46
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to the regional understanding of the map area.

    Mull and others, 1987 (source 37 of 47)
    Mull, C.G., Crowder, R.K., Adams, K.E., Siok, J.P., Bodnar, D.A., Harris, E.E., Alexander, R.A., and Solie, D.N., 1987, Stratigraphy and structural setting of the Picnic Creek allochthon, Killik River quadrangle, central Brooks Range, Alaska: A summary:.

    This is part of the following larger work.

    Tailleur, I.L. (ed.), and Weimer, Paul (ed.), 1987, Alaskan North Slope Geology: Society of Economic Paleontologists and Mineralogists, Pacific Section, and Alaska Geological Society v. 2.

    Other_Citation_Details: p. 649-662
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to the regional, structural, and sedimentological descriptions of the map area.

    Mull and others, 1997 (source 38 of 47)
    Mull, C.G., Glenn, R.K., and Adams, K.E., 1997, Tectonic evolution of the central Brooks Range mountain front: Evidence from the Atigun Gorge region: Journal of Geophysical Research v. 102, n. B-9, American Geophysical Union, Washington, D.C., USA.

    Other_Citation_Details: p. 20749-20772
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to the structural interpretation of this map.

    Mull and Harris, 1989 (source 39 of 47)
    Mull, C.G., and Harris, E.E., 1989, Road log from Chandalar Shelf (Mile 237.1) to Prudhoe Bay (Mile 414):.

    This is part of the following larger work.

    Mull, C.G. (ed.), and Adams, K.E. (ed.), 1989, Dalton Highway, Yukon River to Prudhoe Bay, Alaska: Bedrock Geology of the eastern Koyukuk basin, central Brooks Range, and east-central Arctic Slope: Alaska: Guide Book GB 7 v. 2.

    Online Links:

    Other_Citation_Details: p. 101-132
    Type_of_Source_Media: report
    Source_Contribution:
    This map contributed to the regional understanding of the map area.

    Nilsen and Moore, 1984 (source 40 of 47)
    Nilsen, T.H., and Moore, T.E., 1984, Stratigraphic nomenclature for the Upper Devonian and Lower Mississippian(?) Kanayut Conglomerate, Brooks Range, Alaska: Bulletin 1529-A, U.S. Geological Survey, Reston, VA, USA.

    Other_Citation_Details: 64 pp.
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to understanding sedimentation and stratigraphy, to map and define units, in the map area.

    Sable, 1956 (source 41 of 47)
    Sable, E.G., 1956, New and refined Cretaceous formations in western part of northern Alaska: American Association of Petroleum Geologists v. 40, n. 11.

    Other_Citation_Details: p. 2635-2643
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to understanding sedimentation and stratigraphy, to map and define units, in the map area.

    Schenk and Bird, 1993 (source 42 of 47)
    Schenk, C.J., and Bird, K.J., 1993, Depositional sequences in lower Cretaceous rocks, Atigun Syncline and Slope Mountain areas, Alaskan North Slope:.

    This is part of the following larger work.

    Dusel-Bacon, Cynthia (ed.), and Till, A.B. (ed.), 1993, Geologic studies in Alaska by the U.S. Geological Survey, 1992: Bulletin 2068.

    Other_Citation_Details: pages 48-58
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to understanding sedimentation and stratigraphy, to map and define units, in the map area.

    Siok, 1989 (source 43 of 47)
    Siok, J.P., 1989, Stratigraphy and petrology of the Okpikruak Formation at Cobblestone Creek, northcentral Brooks Range:.

    This is part of the following larger work.

    Mull, C.G. (ed.), and Adams, K.E. (ed.), 1989, Dalton Highway, Yukon River to Prudhoe Bay, Alaska: Bedrock Geology of the eastern Koyukuk basin, central Brooks Range, and east-central Arctic Slope: Alaska: Guide Book GB 7 v. 2.

    Online Links:

    Other_Citation_Details: pages 285-292
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to understanding sedimentation and stratigraphy, to map and define units, in the map area.

    Siok, 1985 (source 44 of 47)
    Siok, J.P., 1985, Geologic history of the Siksikpuk Formation on the Endicott Mountains and Picnic Creek allochthons, north-central Brooks Range, Alaska.

    Other_Citation_Details:
    Unpublished Master's Thesis, University of Alaska Fairbanks, 253 pages
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to understanding sedimentation and stratigraphy, to map and define units, in the map area

    Wallace and others, 1997 (source 45 of 47)
    Wallace, W.K., Moore, T.E., and Plafker, George, 1997, Multistory duplexes with forward dipping roofs, north central Brooks Range, Alaska: Journal of Geophysical Research v. 102, n. B-9, American Geophysical Union, Washington, D.C., USA.

    Other_Citation_Details: p. 20773-20796
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to the structural interpretation of this map.

    Wartes and Carroll, 2002 (source 46 of 47)
    Wartes, M.A., and Carroll, A.R., 2002, Detailed facies analysis of the Lower Cretaceous Fortress Mountain Formation, Atigun Syncline, Northern Alaska: Energy Frontiers - A 2002 Perspective: Program and Abstracts, American Association of Petroleum Geologists and Society of Petroleum Engineers none.

    Other_Citation_Details: p. 107
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to understanding sedimentation and stratigraphy, to map and define units, in the map area.

    Wilber and others, 1987 (source 47 of 47)
    Wilber, S.C., Siok, J.P., and Mull, C.G., 1987, A comparison of two petrographic suites of the Okpikruak Formation: a point count analysis:.

    This is part of the following larger work.

    Tailleur, I.L. (ed.), and Weimer, Paul (ed.), 1987, Alaskan North Slope Geology: Society of Economic Paleontologists and Mineralogists, Pacific Section, and Alaska Geological Society v. 1.

    Other_Citation_Details: p. 441-447
    Type_of_Source_Media: report
    Source_Contribution:
    This report contributed to understanding sedimentation and stratigraphy, to map and define units, in the map area.

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

    Date: 2001 (process 1 of 3)
    Field work - During the summer of 2001 DGGS conducted a geologic field mapping project. Field work for bedrock and surficial investigations was conducted for approximately 30 days during the months of June and July 2001. Field notes and rock samples were collected at approximately 1,100 stations throughout the map area. Geologists recorded observations on 1:63,360-scale topographic base maps and/or similarly scaled aerial photographs. In the evenings, each geologist's observations were compiled onto a single mylar base map. Field stations were located using handheld GPS units.

    Data sources used in this process:

    • Brosgé and others, 1979
    • Glenn, 1991
    • Mull and others, 2002
    • Mull and others, 2003
    • Mull and others, 1994
    • Reifenstuhl and others, 1993
    • Philip Smith Mountains (B-4), Alaska
    • Philip Smith Mountains (C-4), Alaska
    • Philip Smith Mountains (D-4), Alaska
    • Philip Smith Mountains (B-5), Alaska
    • Philip Smith Mountains (C-5), Alaska
    • Philip Smith Mountains (D-5), Alaska

    Date: 2001 (process 2 of 3)
    Data Compilation - Geologic information from relevant literature was incorporated into the data generated from field work. Final interpretations were recorded on a mylar sheet.

    Data sources used in this process:

    • Brosgé and others, 1979
    • Mull and others, 2002
    • Mull and others, 2003
    • Mull and others, 1994
    • Reifenstuhl and others, 1993
    • Adams, 1991
    • Adams and others, 1997
    • Ahlbrandt and others, 1979
    • Bartsch-Winkler, 1985
    • Bird and Molenaar, 1992
    • Bodnar, 1989
    • Bodnar, 1984
    • Brosgé and Moore, 1993
    • Cole and others, 1997
    • Crowder, 1993
    • Crowder, 1989
    • Detterman, 1956
    • Dumoulin and others, 1997
    • Gryc and others, 1951
    • Huffman and others, 1985
    • LePain and others, 2002
    • Molenaar, 1985
    • Molenaar and others, 1981
    • Moore and others, 1989
    • Moore and others, 1997
    • Moore and others, 1994
    • Mull, 1985
    • Mull, 1989
    • Mull and others, 1987
    • Mull and others, 1997
    • Mull and Harris, 1989
    • Nilsen and Moore, 1984
    • Sable, 1956
    • Schenk and Bird, 1993
    • Siok, 1989
    • Siok, 1985
    • Wallace and others, 1997
    • Wartes and Carroll, 2002
    • Wilber and others, 1987

    Date: 2002 (process 3 of 3)
    Digital Cartography - The final compilation of the geologic map data on mylar was scanned as a high-resolution tiff file. The file was imported into ArcGIS 8.1, and geographically registered in UTM coordinates (see spatial reference information section below). Geologic polygons, linear features, and data point locations were digitized 'on-screen' and attributed with appropriate supporting information. Editing and quality control checks took place at every process step. All final map layout and editing was accomplished in Adobe Illustrator Version 9.

    Data sources used in this process:

    • Hamilton, 2002

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

    Hamilton, T.D., 2002, Surficial geology of the Dalton Highway (Itkillik-Sagavanirktok Rivers) area, southern Arctic Foothills, Alaska: Professional Report PR 121, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.

    Online Links:

    Other_Citation_Details: text report, 40 p., 1 sheet, scale 1:63,360


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

  1. How well have the observations been checked?

    Geologic data used in the compilation was derived from the field maps and notes generated by this project (2001 and 2002) as well as data from other sources as noted in the "Source_Information" section. Location data for geologic point coverages was acquired from hand held GPS units and compiled on paper field maps and notebooks. A mylar compilation map composed of all geologic information elements was scanned and digitized "on screen" using ArcGIS 8.1. Spatial data attributes were attached to data objects using ArcGIS 8.1. Attributes were verified for consistency and completeness during the creation of the metadata.

  2. How accurate are the geographic locations?

    DGGS location data and estimated position errors were acquired with hand held GPS units and transferred to field maps and notebooks. Sample numbers and locations of selected data were transferred to a mylar compilation map. The compilation map was scanned and point locations were digitized "on screen" and spatially registered in ArcGIS 8.1. See "Source_Information" section for horizontal positional accuracy of locations not measured by DGGS.

  3. How accurate are the heights or depths?

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

    This dataset includes vector data tables that contain information about geologic units, structural features, and structural measurements.

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

    Topology is present on appropriate polygon and line data tables; others are point data tables.


How can someone get a copy of the data set?

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

Access_Constraints:
This map and data set is available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below).
Use_Constraints:
Any hard copies or published data sets utilizing these data sets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. User specifically agrees not to misrepresent these data sets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys.

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

    State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
    Natural Resource Technician
    3354 College Road
    Fairbanks, AK 99709-3707
    USA

    907-451-5020 (voice)
    907-451-5050 (FAX)
    dggspubs@alaska.gov

    Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays
    Contact_Instructions:
    Please view our web site (<http://www.dggs.alaska.gov>) for the latest information on available data. Please contact us using the e-mail address provided above when possible.
  2. What's the catalog number I need to order this data set?

    Preliminary Interpretive Report 2002-2

  3. What legal disclaimers am I supposed to read?

    The State of Alaska makes no express or implied warranties (including warranties of merchantability and fitness) with respect to the character, function, or capabilities of the electronic services or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products, any failure thereof, or otherwise, and in no event will the State of Alaska's liability to the requester or anyone else exceed the fee paid for the electronic service or product.

  4. How can I download or order the data?

  5. What hardware or software do I need in order to use the data set?

    Please check the MapInfo web site (<http://www.mapinfo.com/>) for the latest documentation on importing ESRI shape files.


Who wrote the metadata?

Dates:
Last modified: 06-May-2008
Last Reviewed: 06-May-2008
To be reviewed: 02-Nov-2009
Metadata author:
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
c/o Simone Montayne
3354 College Road
Fairbanks, AK 99709-3707
USA

(907) 451-5036 (voice)
907-451-5050 (FAX)
dggspubs@alaska.gov

Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays.
Contact_Instructions:
Please contact us through the e-mail address above whenever possible.
Metadata standard:
FGDC Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)


Generated by mp version 2.9.6 on Tue May 06 14:29:36 2008