Iron Creek airborne electromagnetic and magnetic geophysical survey data compilation

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Frequently anticipated questions:


What does this data set describe?

Title:
Iron Creek airborne electromagnetic and magnetic geophysical survey data compilation
Abstract:
The Iron Creek electromagnetic and magnetic airborne geophysical survey area is located in Alaska in the Yentna-Cache Creek mining district, about 90 kilometers north-northeast of Anchorage, Alaska. Frequency domain electromagnetic and magnetic data were collected with the DIGHEMV system from August 6 to 24, 1997. A total of 5103 line kilometers were collected covering 1852 square kilometers. Line spacing was 400 meters (m). Data were collected an average of 36 m above the ground surface from a helicopter towed sensor platform ("bird") on a 30 m long line. The data, as well as additional metadata, are available from the DGGS website: http://doi.org/10.14509/27360.
Supplemental_Information:
ascii_data:    ASCII format line data, other ASCII data	
databases_geosoft:    Geosoft format database of line data, other Geosoft format databases	
documents:    Project and field reports, survey background information, gridded data explanations, other supporting documentation	
grids_ermapper:    Geographically registered gridded data, ER Mapper ERS format	
grids_geosoft:    Geosoft-format binary grids, these grids can be viewed in ESRI ArcMap using a free plugin from Geosoft or using the free viewer available from Geosoft	
images_registered:    GeoTiff format images of all gridded data	
kmz:    Keyhole markup language (kml) kmz archive files of project data. Viewable in Google Earth and other compatible programs	
maps_hpp_format:    Printable maps in HPGL/2 printer file format with extension .hpp	
maps_pdf_format:    Printable maps in pdf format	
profiles_stacked:    Distance-based profiles of the digitally recorded geophysical data are generated and plotted at an appropriate scale. The profiles display electromagnetic anomalies with their respective interpretive symbols	
vector_data:    Line path, data contours, and survey boundary in ESRI shapefile (SHP) format, ESRI Geodatabase format, and/or AutoCAD dxf format
  1. How might this data set be cited?
    Burns, L.E., Geoterrex-Dighem, WGM, Inc., Emond, A.M., and Graham, G.R.C., 2014, Iron Creek airborne electromagnetic and magnetic geophysical survey data compilation: Geophysical Report GPR 2014-6, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -149.650676
    East_Bounding_Coordinate: -148.318240
    North_Bounding_Coordinate: 62.720974
    South_Bounding_Coordinate: 62.244375
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: 1997
    Currentness_Reference:
    ground condition
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: digital, data
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      This is a raster 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?
    ascii_data
    ASCII format line data, other ASCII data (Source: Geoterrex-Dighem and WGM, Inc.)
    databases_geosoft
    Geosoft format database of line data, other Geosoft format databases (Source: Geoterrex-Dighem and WGM, Inc.)
    documents
    Project and field reports, survey background information, gridded data explanations, other supporting documentation (Source: Geoterrex-Dighem and WGM, Inc. and Alaska Division of Geological & Geophysical Surveys (DGGS))
    grids_ermapper
    Geographically registered gridded data, ER Mapper ERS format (Source: Geoterrex-Dighem and WGM, Inc. and Alaska Division of Geological & Geophysical Surveys (DGGS))
    grids_geosoft
    Geosoft-format binary grids, these grids can be viewed in ESRI ArcMap using a free plugin from Geosoft or using the free viewer available from Geosoft (Source: Geoterrex-Dighem and WGM, Inc. and Alaska Division of Geological & Geophysical Surveys (DGGS))
    images_registered
    GeoTiff format images of all gridded data (Source: Alaska Division of Geological & Geophysical Surveys (DGGS))
    kmz
    Keyhole markup language (kml) kmz archive files of project data. Viewable in Google Earth and other compatible programs (Source: Alaska Division of Geological & Geophysical Surveys (DGGS))
    maps_hpp_format
    Printable maps in HPGL/2 printer file format with extension .hpp (Source: Geoterrex-Dighem and WGM, Inc.)
    maps_pdf_format
    Printable maps in pdf format (Source: Geoterrex-Dighem and WGM, Inc.)
    profiles_stacked
    Distance-based profiles of the digitally recorded geophysical data are generated and plotted at an appropriate scale. The profiles display electromagnetic anomalies with their respective interpretive symbols (Source: Geoterrex-Dighem and WGM, Inc.)
    vector_data
    Line path, data contours, and survey boundary in ESRI shapefile (SHP) format, ESRI Geodatabase format, and/or AutoCAD dxf format (Source: Alaska Division of Geological & Geophysical Surveys (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?
    Funding was provided by the Alaska State Legislature as part of the DGGS Airborne Geophysical/Geological Mineral Inventory (AGGMI) program.
  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?

This airborne geophysical survey is part of a program to acquire data on Alaska's most promising mineral belts and districts. The information acquired is aimed at catalyzing new private sector exploration, discovery, and ultimate development and production. The purpose of the survey was to map the magnetic and conductive properties of the survey area.

How was the data set created?

  1. From what previous works were the data drawn?
    Burns, L.E. and Liss, S.A., 1998 (source 1 of 19)
    Burns, L.E., and Liss, S.A., 1998, Portfolio of aeromagnetic and resistivity maps of the Iron Creek area, Talkeetna Mountains Quadrangle, southcentral Alaska: Public Data File PDF 98-6, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 16 p., 1 sheet
    Type_of_Source_Media: paper
    Source_Contribution: Legacy data compilation
    DGGS Staff and others, 1998 (source 2 of 19)
    Staff, DGGS, Geoterrex-Dighem, and WGM, Inc., 1998, 7200 Hz coplanar resistivity of the Iron Creek area, Talkeetna Mountains Quadrangle, southcentral Alaska: Public Data File PDF 98-5, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 2 sheets, scale 1:63,360
    Type_of_Source_Media: paper
    Source_Scale_Denominator: 63360
    Source_Contribution: Legacy data compilation
    DGGS Staff and others, 1998 (source 3 of 19)
    Staff, DGGS, Geoterrex-Dighem, and WGM, Inc., 1998, 7200 Hz coplanar resistivity of the Iron Creek area, Talkeetna Mountains Quadrangle, southcentral Alaska: Report of Investigation RI 98-3, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 2 sheets, scale 1:63,360
    Type_of_Source_Media: paper
    Source_Scale_Denominator: 63360
    Source_Contribution: Legacy data compilation
    DGGS Staff and others, 1998 (source 4 of 19)
    Staff, DGGS, Geoterrex-Dighem, and WGM, Inc., 1998, 900 Hz coplanar resistivity of the Iron Creek area, Talkeetna Mountains Quadrangle, southcentral Alaska: Public Data File PDF 98-4, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 2 sheets, scale 1:63,360
    Type_of_Source_Media: paper
    Source_Scale_Denominator: 63360
    Source_Contribution: Legacy data compilation
    DGGS Staff and others, 1998 (source 5 of 19)
    Staff, DGGS, Geoterrex-Dighem, and WGM, Inc., 1998, 900 Hz coplanar resistivity of the Iron Creek area, Talkeetna Mountains Quadrangle, southcentral Alaska: Report of Investigation RI 98-2, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 2 sheets, scale 1:63,360
    Type_of_Source_Media: paper
    Source_Scale_Denominator: 63360
    Source_Contribution: Legacy data compilation
    DGGS Staff and others, 1998 (source 6 of 19)
    Staff, DGGS, Geoterrex-Dighem, and WGM, Inc., 1998, CD-ROM containing gridded files and section lines of 1997 geophysical survey data for Iron Creek area, Talkeetna Mountains Quadrangle, southcentral Alaska: Public Data File PDF 98-8, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 1 DVD
    Type_of_Source_Media: paper
    Source_Contribution: Legacy data compilation
    DGGS Staff and others, 1998 (source 7 of 19)
    Staff, DGGS, Geoterrex-Dighem, and WGM, Inc., 1998, CD-ROM containing profile and gridded data and section lines of the 1997 geophysical survey data for Iron Creek area, Talkeetna Mountains Quadrangle, southcentral Alaska: Public Data File PDF 98-9, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 1 DVD
    Type_of_Source_Media: paper
    Source_Contribution: Legacy data compilation
    DGGS Staff and others, 1998 (source 8 of 19)
    Staff, DGGS, Geoterrex-Dighem, and WGM, Inc., 1998, Flight lines of the Iron Creek area, Talkeetna Mountains Quadrangle, southcentral Alaska: Public Data File PDF 98-1, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 2 sheets, scale 1:63,360
    Type_of_Source_Media: paper
    Source_Scale_Denominator: 63360
    Source_Contribution: Legacy data compilation
    DGGS Staff and others, 1998 (source 9 of 19)
    Staff, DGGS, Geoterrex-Dighem, and WGM, Inc., 1998, Total field magnetics and detailed electromagnetic anomalies of the Iron Creek area, Talkeetna Mountains Quadrangle, southcentral Alaska (part of C-4): Public Data File PDF 98-18B, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 1 sheet, scale 1:31,680
    Type_of_Source_Media: paper
    Source_Scale_Denominator: 31680
    Source_Contribution: Legacy data compilation
    DGGS Staff and others, 1998 (source 10 of 19)
    Staff, DGGS, Geoterrex-Dighem, and WGM, Inc., 1998, Total field magnetics and detailed electromagnetic anomalies of the Iron Creek area, Talkeetna Mountains Quadrangle, southcentral Alaska (part of C-5): Public Data File PDF 98-18A, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 1 sheet, scale 1:31,680
    Type_of_Source_Media: paper
    Source_Scale_Denominator: 31680
    Source_Contribution: Legacy data compilation
    DGGS Staff and others, 1998 (source 11 of 19)
    Staff, DGGS, Geoterrex-Dighem, and WGM, Inc., 1998, Total field magnetics and detailed electromagnetic anomalies of the Iron Creek area, Talkeetna Mountains Quadrangle, southcentral Alaska (parts of C-3 and C-4): Public Data File PDF 98-18C, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 1 sheet, scale 1:31,680
    Type_of_Source_Media: paper
    Source_Scale_Denominator: 31680
    Source_Contribution: Legacy data compilation
    DGGS Staff and others, 1998 (source 12 of 19)
    Staff, DGGS, Geoterrex-Dighem, and WGM, Inc., 1998, Total field magnetics and electromagnetic anomalies of the Iron Creek area, Talkeetna Mountains Quadrangle, southcentral Alaska (clear diazo film version): Public Data File PDF 98-2, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 2 sheets, scale 1:63,360
    Type_of_Source_Media: paper
    Source_Scale_Denominator: 63360
    Source_Contribution: Legacy data compilation
    DGGS Staff and others, 1998 (source 13 of 19)
    Staff, DGGS, Geoterrex-Dighem, and WGM, Inc., 1998, Total field magnetics and electromagnetic anomalies of the Iron Creek area, Talkeetna Mountains Quadrangle, southcentral Alaska (part of B-3 and B-4): Public Data File PDF 98-18G, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 1 sheet, scale 1:31,680
    Type_of_Source_Media: paper
    Source_Scale_Denominator: 31680
    Source_Contribution: Legacy data compilation
    DGGS Staff and others, 1998 (source 14 of 19)
    Staff, DGGS, Geoterrex-Dighem, and WGM, Inc., 1998, Total field magnetics and electromagnetic anomalies of the Iron Creek area, Talkeetna Mountains Quadrangle, southcentral Alaska (part of B-4): Public Data File PDF 98-18F, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 1 sheet, scale 1:31,680
    Type_of_Source_Media: paper
    Source_Scale_Denominator: 31680
    Source_Contribution: Legacy data compilation
    DGGS Staff and others, 1998 (source 15 of 19)
    Staff, DGGS, Geoterrex-Dighem, and WGM, Inc., 1998, Total field magnetics and electromagnetic anomalies of the Iron Creek area, Talkeetna Mountains Quadrangle, southcentral Alaska (part of B-5 and B-6): Public Data File PDF 98-18D, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 1 sheet, scale 1:31,680
    Type_of_Source_Media: paper
    Source_Scale_Denominator: 31680
    Source_Contribution: Legacy data compilation
    DGGS Staff and others, 1998 (source 16 of 19)
    Staff, DGGS, Geoterrex-Dighem, and WGM, Inc., 1998, Total field magnetics and electromagnetic anomalies of the Iron Creek area, Talkeetna Mountains Quadrangle, southcentral Alaska (part of B-5): Public Data File PDF 98-18E, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 1 sheet, scale 1:31,680
    Type_of_Source_Media: paper
    Source_Scale_Denominator: 31680
    Source_Contribution: Legacy data compilation
    DGGS Staff and others, 1998 (source 17 of 19)
    Staff, DGGS, Geoterrex-Dighem, and WGM, Inc., 1998, Total field magnetics and electromagnetic anomalies of the Iron Creek area, Talkeetna Mountains Quadrangle, southcentral Alaska: Public Data File PDF 98-3, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 2 sheets, scale 1:63,360
    Type_of_Source_Media: paper
    Source_Scale_Denominator: 63360
    Source_Contribution: Legacy data compilation
    DGGS Staff and others, 1998 (source 18 of 19)
    Staff, DGGS, Geoterrex-Dighem, and WGM, Inc., 1998, Total field magnetics of the Iron Creek area, Talkeetna Mountains Quadrangle, southcentral Alaska: Report of Investigation RI 98-1, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 2 sheets, scale 1:63,360
    Type_of_Source_Media: paper
    Source_Scale_Denominator: 63360
    Source_Contribution: Legacy data compilation
    Pritchard, R.A. and Geoterrex-Dighem, 1998 (source 19 of 19)
    Pritchard, R.A., and Geoterrex-Dighem, 1998, Project report of the 1997 geophysical survey data for Iron Creek area, Talkeetna Mountains Quadrangle, southcentral Alaska: Public Data File PDF 98-7, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 313 p., 2 sheets, scale 1:63,360
    Type_of_Source_Media: paper
    Source_Scale_Denominator: 63360
    Source_Contribution: Legacy data compilation
  2. How were the data generated, processed, and modified?
    Date: 1997 (process 1 of 13)
    Raw and processed point data along flight lines - These data are directly provided by the contractor. Raw data are a direct export from field collection instruments. Final data are processed by method according to the contractor provided reports and process steps in this document.
    Date: 1997 (process 2 of 13)
    Geophysical data - The geophysical data were acquired with a DIGHEM
    Date: 1997 (process 3 of 13)
    Total magnetic field data - The total magnetic field data were acquired with a sampling interval of 0.1 seconds, and were (1) corrected for diurnal variations by subtraction of the digitally recorded base station magnetic data, (2) leveled to the tie line data, and (3) interpolated onto a regular 100 m grid using a modified Akima (1970) technique. The regional variation (or IGRF gradient, 1995, updated to August, 1997) was removed from the leveled magnetic. The aeromagnetic data were interpolated onto a regular 100 m grid using a modified Akima (1970) technique. [Akima, H., 1970, A new method of interpolation and smooth curve fitting based on local procedures: Journal of the Association of Computing Machinery, v. 17, no. 4, p. 589
    Date: 1997 (process 4 of 13)
    Inphase and quadrature components - The DIGHEM(V) EM system measured inphase and quadrature components at five frequencies. EM data were sampled at 0.1 second intervals. The EM inphase and quadrature data were drift corrected using base level data collected at high altitude (areas of no signal). Along
    Date: 1997 (process 5 of 13)
    Vector data in shape file format, examples: line path, data contours - These data were created by exporting data and interpretations to vector format.
    Date: 1998 (process 6 of 13)
    Project report, portfolio report, and other important documents - The project report, portfolio report, and other important documents were generated by the contractor, DGGS staff, or a combination.
    Date: 2014 (process 7 of 13)
    Legacy data compilation - DGGS staff compiled and organized previously published data and the originating data from the contractor. Print format maps of data in plotter file format were created by the contractor (1998) using data and interpretation products derived from the final ascii data. DGGS staff converted the hpp files into PDFs. Data sources used in this process:
    • Burns, L.E. and Liss, S.A., 1998
    • DGGS Staff and others, 1998
    • DGGS Staff and others, 1998
    • DGGS Staff and others, 1998
    • DGGS Staff and others, 1998
    • DGGS Staff and others, 1998
    • DGGS Staff and others, 1998
    • DGGS Staff and others, 1998
    • DGGS Staff and others, 1998
    • DGGS Staff and others, 1998
    • DGGS Staff and others, 1998
    • DGGS Staff and others, 1998
    • DGGS Staff and others, 1998
    • DGGS Staff and others, 1998
    • DGGS Staff and others, 1998
    • DGGS Staff and others, 1998
    • DGGS Staff and others, 1998
    • DGGS Staff and others, 1998
    • Pritchard, R.A. and Geoterrex-Dighem, 1998
    Date: 2014 (process 8 of 13)
    Data in Geosoft GDB format - These data were created by importing the final ascii data into Geosft Oasi Montaj v8.2 using the provided *.iO import file.
    Date: 2014 (process 9 of 13)
    Geographically registered gridded data in Geosft GRD format - These data were created by DGGS using the final ascii data. Geosft Oasis montaj v8.2 was used to create the grid files. 80 meter grid cell size and the minimum curvature operate were used in the production of these grids.
    Date: 2014 (process 10 of 13)
    Geographically registered gridded data in GeoTiff format - These data were created by DGGS using Geosft Oasis montaj v8.2. Geosoft grd files were displayed in Geosft and exported to GeoTiff. A matching colorbar for each grid was displayed in Geosoft and export as a GeoTiff.
    Date: 2014 (process 11 of 13)
    Google Earth KMZ files - Created Google Earth KMZ files from the Geosoft format gridded data using ESRI ArcMap 10.2.2.
    Date: 2015 (process 12 of 13)
    Boundary polygon - The boundary polygon was generated by loading the final line data in Geosoft Oasis montaj v8.4. No tie (control) line data were used in this process. The final magnetic data was gridded using the Minimum Curvature option with the following settings: grid cell size = 1/5 of line spacing, blanking distance = double the line spacing, cells to extend beyond data = 0. The polygon file was created using Grid Outline tool with edge resolution = 1. The polygon file was exported to ERSI shapefile.
    Date: 2020 (process 13 of 13)
    PDF map and profile update - Converted stacked profiles to PDF. Converted original plot file format maps to PDF. Updated publication.
  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?
    Geophysical data were acquired according to the contractor, contract, and request-for-proposals specifications. For additional detail about survey parameters, see the accompanying project report available in the documents directory of this data distribution package.
  2. How accurate are the geographic locations?
    Station coordinates were positioned using a real-time or post-processed corrected differential GPS.
  3. How accurate are the heights or depths?
    Not applicable
  4. Where are the gaps in the data? What is missing?
    This data set includes files that contain processed aeromagnetic measurements, electromagnetic measurements, altimetry measurements, and locational data for the entire survey area.
  5. How consistent are the relationships among the observations, including topology?
    Data originate from one company using the same contract specifications for all data. The originating coordinate system was retained for all publication products.

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? GPR 2014-6
  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: 23-Sep-2021
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:

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