Surficial-geologic map of the Big Hurrah-Council Bluff area, southern Seward Peninsula, Alaska

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Frequently anticipated questions:


What does this data set describe?

Title:
Surficial-geologic map of the Big Hurrah-Council Bluff area, southern Seward Peninsula, Alaska
Abstract:
Surficial-geologic map of the Big Hurrah-Council Bluff area, southern Seward Peninsula, Alaska, Report of Investigation 2024-6, shows the distribution of unconsolidated deposits and undifferentiated bedrock in the Big Hurrah-Council-Bluff area in parts of the Solomon C-4, C-5, D-4, D-5, and Bendeleben A-4 quadrangles. The boundaries of the study area were developed to best address questions of bedrock geology and mineral potential, which were the key drivers of the project of which this work is a part. The map was prepared principally by interpreting 1:63,360-scale, false-color, infrared aerial photographs, and multi-scale, multi-band satellite imagery. It is locally verified by ground observations during field studies in 2002, 2003, 2004, and 2006. Surficial geology in this area was previously mapped at a reconnaissance scale (1:250,000) by D.S. Kaufman (1986), and his mapping was used as a baseline and guide with which to target areas for closer inspection. While the current map shows differences in many of its details as well as in the larger-scale interpretation of glacial units and their distribution, much of the general breakdown of surficial units follows Kaufman (1986). The complete report, geodatabase, and ESRI fonts and style files are available from the Alaska Division of Geological & Geophysical Surveys website: http://doi.org/10.14509/31054.
Supplemental_Information:
This geodatabase is organized according to the AK GeMS mapping schema Hendricks, M.D., Macpherson, A.E., Athey, J.E., Wyatt, W.C., Montayne, Simone, Buchanan, Wes, Rivera, P.G., and Steinleitner, A.M., 2024, AK GeMS data dictionary: A description of the Alaska geologic mapping schema: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication 170 v. 2, 13 p. https://doi.org/10.14509/31172. 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?
    Stevens, D.S.P., 2024, Surficial-geologic map of the Big Hurrah-Council Bluff area, southern Seward Peninsula, Alaska: Report of Investigation RI 2024-6, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 9 p., 1 sheet
  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -164.505734
    East_Bounding_Coordinate: -163.607126
    North_Bounding_Coordinate: 65.098749
    South_Bounding_Coordinate: 64.565321
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 2002
    Ending_Date: 2024
    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: 3
      Transverse_Mercator:
      Scale_Factor_at_Central_Meridian: 0.999600
      Longitude_of_Central_Meridian: -165
      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 6378206.4.
      The flattening of the ellipsoid used is 1/294.9786982.
  7. How does the data set describe geographic features?
    casadepaga_surficial_gems_db_pkg_ak_gems_db
    Geodatabase, layer files, style files, and fonts (Source: DGGS)
    casadepaga_surficial_gems_db_pkg_gems_db
    Geodatabase, layer files, style files, and fonts (Source: DGGS)
    casadepaga_surficial_gems_db_pkg_gems_shapefile
    Shapefiles and open data files (Source: DGGS)

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?
    Thanks are extended to Trent Hubbard (DGGS) and Travis Hudson (Applied Geology, Inc.; USGS, retired) for their thoughtful reviews of the map and report, which significantly improved the work. This geologic mapping project was funded primarily by the U.S. Geological Survey STATEMAP program under STATEMAP award numbers 04HQAG0061 and 06HQAG0024. Partial funding was also provided by NASA BAA-01-OES-01 to utilize NASA and commercially developed data and capabilities in operations and decision support. The geologic map database was converted to GeMS, quality controlled, and then finalized by DGGS staff Amy Macpherson, Ally Steinleitner, and DGGS contractors. Geologic map conversion to the GeMS standard was funded by the USGS National Cooperative Geologic Mapping Program under STATEMAP award number G21AC10706, 2022, 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
    GIS Manager
    3354 College Rd
    Fairbanks, AK
    USA

    907-451-5020 (voice)
    dggsgis@alaska.gov
    Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays

Why was the data set created?

DGGS engaged in a NASA-funded project to help facilitate the economic viability of rural communities through increased placer mining opportunities. The surficial-geologic mapping was derived in part from a project funded by the National Aeronautics and Space Administration (NASA) to apply remote sensing imagery, Digital Elevation Models (DEMs), and high-altitude color-infrared photography integrated with knowledge of geomorphology, surficial deposits, and bedrock geology to evaluate the placer gold potential of part of the Council mining district.

How was the data set created?

  1. From what previous works were the data drawn?
    Hendricks, M.D. and others, 2024 (source 1 of 3)
    Hendricks, M.D., Macpherson, A.E., Athey, J.E., Wyatt, W.C., Montayne, Simone, Buchanan, Wes, Rivera, P.G., and Steinleitner, A.M., 2024, AK GeMS data dictionary: A description of the Alaska geologic mapping schema: Miscellaneous Publication MP 170 v. 2, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 13 p
    Type_of_Source_Media: paper
    Source_Contribution: GIS analysis and digital cartography
    Macpherson, A.E. and others, 2024 (source 2 of 3)
    Macpherson, A.E., Hendricks, M.D., and Athey, J.E., 2024, AK GeMS Symbology: A description of the AK GeMS Style File: Miscellaneous Publication MP 169 v. 2, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 6 p
    Type_of_Source_Media: paper
    Source_Contribution: GIS analysis and digital cartography
    U.S. Geological Survey National Cooperative Geologic Mapping Program, 2020 (source 3 of 3)
    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: 2006 (process 1 of 2)
    Geologic mapping - The map was prepared principally by interpreting 1:63,360-scale, false-color, infrared aerial photographs, and multi-scale, multi-band satellite imagery. It is locally verified by ground observations during field studies in 2002, 2003, 2004, and 2006. Surficial geology in this area was previously mapped at a reconnaissance scale (1:250,000) by D.S. Kaufman (1986), and his mapping was used as a baseline and guide with which to target areas for closer inspection. The accompanying map provides a comprehensive process description and bibliographic reference list of prior work identifying and delineating rock units and structural elements.
    Date: 2024 (process 2 of 2)
    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 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:
    • Hendricks, M.D. and others, 2024
    • Macpherson, A.E. and others, 2024
    • U.S. Geological Survey National Cooperative Geologic Mapping Program, 2020
  3. What similar or related data should the user be aware of?
    Layer, P.W., Werdon, M.B., Newberry, R.J., Drake, Jeffrey, and Benowitz, J.A., 2015, 40Ar/39Ar data, Seward Peninsula, Alaska: Raw Data File RDF 2015-3, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 59 p
    Newberry, R.J., Werdon, M.B., Athey, J.E., and Szumigala, D.J., 2005, Bedrock geologic map of the Council area, Solomon D-4 and Bendeleben A-4 quadrangles, Seward Peninsula, Alaska: Report of Investigation RI 2005-1E, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 1 sheet, scale 1:50,000
    Newberry, R.J., Werdon, M.B., Stevens, D.S.P., Athey, J.E., and Szumigala, D.J., 2005, Geologic map of the Council area, Solomon D-4 and Bendeleben A-4 quadrangles, Seward Peninsula, Alaska: Report of Investigation RI 2005-1D, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 1 sheet, scale 1:50,000
    Stevens, D.S.P., 2005, Surficial geologic map of the Council area, Solomon D-4 and Bendeleben A-4 quadrangles, Seward Peninsula, Alaska: Report of Investigation RI 2005-1F, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 1 sheet, scale 1:50,000
    Stevens, D.S.P., 2005, Surficial geologic map of the Big Hurrah area, northern half of the Solomon C-5 Quadrangle, Seward Peninsula, Alaska: Report of Investigation RI 2005-1C, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 1 sheet, scale 1:50,000
    Werdon, M.B., Newberry, R.J., Szumigala, D.J., Athey, J.E., and Hicks, S.A., 2005, Bedrock geologic map of the Big Hurrah area, northern half of the Solomon C-5 Quadrangle, Seward Peninsula, Alaska: Report of Investigation RI 2005-1B, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 1 sheet, scale 1:50,000
    Werdon, M.B., Stevens, D.S.P., Newberry, R.J., Szumigala, D.J., Athey, J.E., and Hicks, S.A., 2005, Geologic map of the Big Hurrah area, northern half of the Solomon C-5 Quadrangle, Seward Peninsula, Alaska: Report of Investigation RI 2005-1A, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 1 sheet, scale 1:50,000
    Werdon, M.B., Stevens, D.S.P., Newberry, R.J., Szumigala, D.J., Athey, J.E., and Hicks, S.A., 2005, Explanatory booklet to accompany geologic, bedrock, and surficial maps of the Big Hurrah and Council areas, Seward Peninsula, Alaska: Report of Investigation RI 2005-1, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 24 p
    Werdon, M.B., Szumigala, D.J., Newberry, R.J., Athey, J.E., and Hicks, S.A., 2005, Major-oxide, minor-oxide, trace-element, geochemical, and non-carbonate carbon data from rocks collected in the Solomon, Bendeleben, and Nome quadrangles, Seward Peninsula, Alaska in 2003 and 2004: Raw Data File RDF 2005-2, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 46 p

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

  1. How well have the observations been checked?
    Attribute fields within each feature class are populated using the map symbology and 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?
    Certainty in feature boundaries or location varies throughout the map. Data fields within each feature class and the accompanying orientation and location confidence lookup tables record the authors' degree of confidence in the location of applicable features.
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    This publication is part of a DGGS Report of Investigations (RI). An RI is the completed product of original research and analysis, and RIs use professional cartography and undergo rigorous peer review, editing, and revision.
  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)
    State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
    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 (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? RI 2024-6
  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 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: 27-Aug-2024
Metadata author:
Simone Montayne
3354 College Road
Fairbanks, AK
USA

907-451-5020 (voice)
Metadata standard:
FGDC Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)
Metadata extensions used:

Generated by mp version 2.9.50 on Tue Aug 27 17:55:20 2024