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:
Preliminary Interpretive Report 2002-2, Geologic map of the Dalton Highway (Atigun Gorge to Slope Mountain) area, southern Arctic Foothills, Alaska, 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. The complete report, geodatabase, and ESRI fonts and style files are available from the DGGS website: http://doi.org/10.14509/2867.
Supplemental_Information:
This geodatabase is organized according to the AK GeMS mapping schema Hendricks, M.D., Ekberg, P.G., Athey, J.E., Wyatt, W.C., Willingham, A.L., and Naibert, T.J., 2021, AK GeMS data dictionary: A description of the Alaska geologic mapping schema: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication 170, 10 p. https://doi.org/10.14509/30669. The distribution package includes ESRI fonts and style files, along with usage instructions. Further documentation of the symbology is provided by Ekberg, P.G., Hendricks, M.D., and Athey, J.E., 2021, AK GeMS symbology: A description of the AK GeMS style file: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication 169, 7 p. https://doi.org/10.14509/30584
  1. How might 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 Interpretive Report PIR 2002-2, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 1 sheet, scale 1:63,360
  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -150.045722
    East_Bounding_Coordinate: -148.956613
    North_Bounding_Coordinate: 68.794307
    South_Bounding_Coordinate: 68.275470
  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:
    ground condition
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: geodatabase
  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?
      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
      Latitude_of_Projection_Origin: 0
      False_Easting: 500000.000000
      False_Northing: 0
      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest .00000001
      Ordinates (y-coordinates) are specified to the nearest .00000001
      Planar coordinates are specified in Meters
      The horizontal datum used is NAD27.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.40000000037.
      The flattening of the ellipsoid used is 1/294.978698199999997.
  7. How does the data set describe geographic features?
    atigun_to_slope_ak_gems_db_pkg
    Geodatabase, layer files, style files, and fonts (Source: Alaska Division of Geological & Geophysical Surveys)
    atigun_to_slope_gems_db_pkg
    Geodatabase, layer files, style files, and fonts (Source: Alaska Division of Geological & Geophysical Surveys)
    atigun_to_slope_gems_shapefile_pkg
    Shapefiles and open data files (Source: Alaska Division of Geological & Geophysical Surveys)

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. Mull (1984-1987, 1989-1994 1999-2001); E.E. Harris (1984-1985, 1992, 1999-2001); R.R Reifenstuhl (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. Mickey (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 Geologic map conversion to the GeMS standard was funded by the USGS National Cooperative Geologic Mapping Program under StateMap award number G21AC10706, 2021, and the State of Alaska General Fund. The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Government.
  3. To whom should users address questions about the data?
    Alaska Division of Geological & Geophysical Surveys
    Metadata Manager
    3354 College Road
    Fairbanks, AK
    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 website (https://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible.

Why was the data set created?

The geologic map 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?
    Ahlbrandt, T.S., 1979 (source 1 of 12)
    Ahlbrandt, T.S., 1979, Preliminary geologic, petrologic, and paleontologic results of the study of Nanushuk Group rocks, North Slope, Alaska: Circular C 794, U.S. Geological Survey, United States.

    Online Links:

    Other_Citation_Details: 163 p
    Type_of_Source_Media: paper
    Source_Contribution: Geologic map compilation
    Ekberg, P.G. and others, 2021 (source 2 of 12)
    Ekberg, P.G., Hendricks, M.D., and Athey, J.E., 2021, AK GeMS symbology: A description of the AK GeMS style file: Miscellaneous Publication MP 169, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 7 p
    Type_of_Source_Media: paper
    Source_Contribution: GIS analysis and digital cartography
    Gryc, George, 1988 (source 3 of 12)
    Gryc, George, 1988, Geology and exploration of the National Petroleum Reserve in Alaska, 1974 to 1982: Professional Paper P 1399, U.S. Geological Survey, United States.

    Online Links:

    Other_Citation_Details: 940 p
    Type_of_Source_Media: paper
    Source_Contribution: Geologic map compilation
    Hamilton, T.D., 2003 (source 4 of 12)
    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, Alaska, United States.

    Online Links:

    Other_Citation_Details: 32 p., 1 sheet, scale 1:63,360
    Type_of_Source_Media: paper
    Source_Scale_Denominator: 63360
    Source_Contribution: Geologic map compilation
    Hendricks, M.D. and others, 2021 (source 5 of 12)
    Hendricks, M.D., Ekberg, P.G., Athey, J.E., Wyatt, W.C., Willingham, A.L., and Naibert, T.J., 2021, AK GeMS data dictionary: A description of the Alaska geologic mapping schema: Miscellaneous Publication MP 170, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 10 p
    Type_of_Source_Media: paper
    Source_Contribution: GIS analysis and digital cartography
    Molenaar, C.M. and others, 1981 (source 6 of 12)
    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 OF 81-967, U.S. Geological Survey, United States.

    Online Links:

    Other_Citation_Details: 32 p
    Type_of_Source_Media: paper
    Source_Contribution: Geologic map compilation
    Mull, C.G. and others, 2003 (source 7 of 12)
    Mull, C.G., Houseknecht, D.W., and Bird, K.J., 2003, Revised Cretaceous and Tertiary Stratigraphic Nomenclature in the Colville basin, northern Alaska: Professional Paper P 1673, U.S. Geological Survey, United States.

    Online Links:

    Type_of_Source_Media: paper
    Source_Contribution: Geologic map compilation
    Mull, C.G. and others, 1994 (source 8 of 12)
    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, United States.

    Online Links:

    Other_Citation_Details: 1 sheet, scale 1:125,000
    Type_of_Source_Media: paper
    Source_Scale_Denominator: 125000
    Source_Contribution: Geologic map compilation
    Mull, C.G. and Adams, K.E., 1989 (source 9 of 12)
    Mull, C.G., and Adams, K.E., 1989, Bedrock geology of the eastern Koyukuk basin, central Brooks Range, and east-central Arctic Slope along the Dalton Highway, Yukon River to Prudhoe Bay, Alaska, Volume 2: Guidebook GB 7 vol. 2, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 167 p., 1 sheet, scale 1:2,851,200
    Type_of_Source_Media: paper
    Source_Scale_Denominator: 2851200
    Source_Contribution: Geologic map compilation
    Nilsen, T.H. and Moore, T.E., 1984 (source 10 of 12)
    Nilsen, T.H., and Moore, T.E., 1984, Stratigraphic nomenclature for the Upper Devonian and Lower Mississippian(?) Kanayut Conglomerate, Brooks Range, Alaska: Bulletin B 1529-A, U.S. Geological Survey, United States.

    Online Links:

    Other_Citation_Details: p. A1-A64
    Type_of_Source_Media: paper
    Source_Contribution: Geologic map compilation
    Reifenstuhl, R.R. and others, 1993 (source 11 of 12)
    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, Alaska, United States.

    Online Links:

    Other_Citation_Details: 11 p., 1 sheet, scale 1:63,360
    Type_of_Source_Media: paper
    Source_Scale_Denominator: 63360
    Source_Contribution: Geologic map compilation
    U.S. Geological Survey National Cooperative Geologic Mapping Program, 2020 (source 12 of 12)
    U.S. Geological Survey National Cooperative Geologic Mapping Program, 2020, GeMS (Geologic Map Schema) - A standard format for the digital publication of geologic maps: Techniques and Methods TM 11-B10, U.S. Geological Survey, United States.

    Online Links:

    Other_Citation_Details: 1 p
    Type_of_Source_Media: paper
    Source_Contribution: GIS analysis and digital cartography
  2. How were the data generated, processed, and modified?
    Date: 2001 (process 1 of 3)
    Geologic mapping - During the summer of 2001 DGGS conducted a geologic field mapping project. Fieldwork for bedrock and surficial investigations was conducted for approximately 30 days during June and July 2001. Field notes and rock samples were collected from about 1,100 stations throughout the map area. Geologists recorded observations on 1:63,360-scale topographic base maps and/or similarly scaled aerial photographs. Each geologist's observations were compiled onto a single mylar base map in the evenings. Field stations were located using handheld GPS units.
    Date: 2002 (process 2 of 3)
    Geologic map compilation - The conceptual framework for the regional geology relies heavily on preexisting literature. A comprehensive bibliographic reference list of prior work used to identify and delineate rock units and structural elements is provided in the accompanying report. Surficial geologic map units were generalized from concurrent surficial geologic mapping by T. D. Hamilton. The map and report received technical review and editing by several scientists familiar with the subject matter. The authors incorporated the reviewers' suggestions into the final draft. Data sources used in this process:
    • Ahlbrandt, T.S., 1979
    • Gryc, George, 1988
    • Hamilton, T.D., 2003
    • Molenaar, C.M. and others, 1981
    • Mull, C.G. and others, 2003
    • Mull, C.G. and others, 1994
    • Mull, C.G. and Adams, K.E., 1989
    • Nilsen, T.H. and Moore, T.E., 1984
    • Reifenstuhl, R.R. and others, 1993
    Date: 2022 (process 3 of 3)
    GIS analysis and digital cartography - This data distribution package's geologic and geographic features were organized and attributed according to the AK GeMS geologic mapping schema. The data were then programmatically transformed to provide download options in three formats: (1) an AK GeMS data package that includes the complete AK GeMS database and associated files, (2) a GeMS data package that is a conversion of the AK GeMS database into the base GeMS standard published by the USGS, and (3) a shapefile data package that includes two simple shapefile representations of the data. Data sources used in this process:
    • Ekberg, P.G. and others, 2021
    • Hendricks, M.D. and others, 2021
    • U.S. Geological Survey National Cooperative Geologic Mapping Program, 2020
  3. What similar or related data should the user be aware of?
    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, Alaska, United States.

    Online Links:

    Other_Citation_Details: 32 p., 1 sheet, scale 1:63,360
    Peapples, P.R., Delaney, A.J., and LePain, D.L., 2002, 400 MHz ground-penetrating radar, Itkillik River, North Slope, Alaska: Miscellaneous Publication MP 126, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 1 sheet, scale 1:100
    Stevens, D.S.P., 2014, Engineering-geologic map of the Dalton Highway from Galbraith Lake to Slope Mountain, southern Arctic Foothills, Alaska: Preliminary Interpretive Report PIR 2002-3, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 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?
    This data release provides legacy geospatial data converted to the GeMS and AK GeMS specifications. Attribute fields within each feature class are populated using corresponding applicable values from the GeMS and AK GeMS specifications. When known, certainty in attribute interpretation is indicated in the relevant fields. Attribute accuracy varies throughout the map and is scale-dependent.
  2. How accurate are the geographic locations?
    This data release provides legacy geospatial data converted to the GeMS and AK GeMS specifications. The data include descriptive fields within each feature class and accompanying orientation and location confidence lookup tables to record the originating authors' degree of confidence in the location of features. Certainty in feature boundaries or location varies throughout the map.
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    This publication is a DGGS Preliminary Interpretive Report (PIR). A PIR provides timely release maps and reports with a preliminary interpretation of geology or analytical data. Several scientists familiar with the geology of map area have reviewed this publication for technical content.
  5. How consistent are the relationships among the observations, including topology?
    All polygon features were topologically validated according to the AK GeMS geologic mapping schema specifications.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?
Access_Constraints:
This report, map, and/or dataset 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 datasets utilizing these datasets 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. The user specifically agrees not to misrepresent these datasets, 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. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data 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 or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.
  1. Who distributes the data set? (Distributor 1 of 1)
    Alaska Division of Geological & Geophysical Surveys
    Metadata Manager
    3354 College Road
    Fairbanks, AK
    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 website (https://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? PIR 2002-2
  3. What legal disclaimers am I supposed to read?
    The State of Alaska makes no expressed or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data 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 or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.
  4. How can I download or order the data?

Who wrote the metadata?

Dates:
Last modified: 19-Mar-2022
Metadata author:
Alaska Division of Geological & Geophysical Surveys
Attn: Simone Montayne
Metadata Manager
3354 College Road
Fairbanks, AK
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
Metadata standard:
FGDC Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)
Metadata extensions used:

Generated by mp version 2.9.50 on Fri Mar 18 16:23:00 2022