{"action":"create","ckan_id":null,"date_created":"Sat, 07 Mar 2026 20:41:12 GMT","date_finished":null,"harvest_job_id":"5146f61a-f575-4df8-8eeb-1e0f3906084a","harvest_source_id":"31f41541-38a0-400b-b240-10ebcb0acd9a","id":"0da6e85c-1f45-4785-b940-2a99c24db30f","identifier":"https://dggs.alaska.gov/webpubs/metadata/GPR2019-12.xml","parent_identifier":null,"source_hash":"85f7ded6408e5d5de2765c26155843f56787373b3858851d72cd8d1fbe992872","source_raw":"\n\n\n\n\nBurns, L.E.\nGraham, G.R.C.\nEmond, A.M.\nBarefoot, J.D.\n2019\nFarewell electromagnetic, magnetic, and radiometric airborne geophysical survey data compilation\ndigital data\n\nGeophysical Report\nGPR 2019-12\n\n\nFairbanks, Alaska, United States\nAlaska Division of Geological & Geophysical Surveys\n\n4 p\nhttp://doi.org/10.14509/30190\n\n\n\nThe Farewell geophysical survey is located in the Alaska Range of southcentral Alaska in the Yentna and McGrath mining districts, about 150 kilometers northwest of Anchorage, Alaska. Frequency domain electromagnetic, magnetic, and radiometric data were collected with the DIGHEMV system from September 12th to November 3rd, 2012 and June 29th to September 27th, 2013. A total of 7187.5 line kilometers were collected covering 2544.9 square kilometers. Line spacing was 400 meters (m). Data were collected 30 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/10.14509/30190.\nThis 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 primary goal of the Farewell project is to delineate prospective mineral zones and to support detailed geologic mapping. Many prospects are in the survey area and are thought to represent several different deposit types, including polymetallic veins, epithermal veins, and porphyry copper deposits.\n\n>ascii_data: ASCII format line data, other ASCII data\t\n>databases_geosoft: Geosoft format database of line data, other Geosoft format databases\t\n>documents: Project and field reports, survey background information, gridded data explanations, other supporting documentation\t\n>grids_ermapper: Geographically registered gridded data, ER Mapper ERS format\t\n>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\t\n>images_registered: GeoTiff format images of all gridded data\t\n>kmz: Keyhole markup language (kml) kmz archive files of project data. Viewable in Google Earth and other compatible programs\t\n>maps_pdf_format: Printable maps in pdf format\t\n>maps_prn_format: Printable maps in HPGL/2 printer file format with extension .prn\t\n>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\t\n>vector_data: Line path, data contours, and survey boundary in ESRI shapefile (SHP) format, ESRI Geodatabase format, and/or AutoCAD dxf format\t\n>video_flightpath: Survey flight path downward-facing video\n\n\n\n\n\n2012\n2013\n\n\nground condition\n\n\ncomplete\nNone planned\n\n\n\n-154.540246\n-152.997855\n62.530667\n61.852471\n\n\n\n\nISO 19115 Topic Category\ngeoscientificInformation\n\n\nAlaska Division of Geological & Geophysical Surveys\nAeromagnetic\nAeromagnetic Data\nAeromagnetic Map\nAeromagnetic Survey\nAirborne Geophysical Survey\nAnalytic Signal\nApparent Resistivity Data\nApparent Resistivity Map\nApparent Resistivity Survey\nConductivity Survey\nElectromagnetic Data\nElectromagnetic Survey\nExploration\nFirst Vertical Derivative\nFrequency Domain Electromagnetic Data\nGeologic\nGeology\nGeophysical Map\nGeophysical Survey\nGeophysics\nGeophysics Search Tag\nGridded Data\nLine Data\nMagnetic Data\nMagnetic Survey\nMagnetics\nRemote Sensing\nResistivity\nResistivity Survey\n\n\nAlaska Division of Geological & Geophysical Surveys\nBear Creek\nBrush Creek\nDalzell Creek\nEarl River\nGoodman Pass\nJones River\nLyman Fork\nMcGrath Mining District\nMiddle Fork Kuskokwim River\nNorth Fork\nNorth Fork Big River\nPass Creek\nPass Fork\nPost River\nRainy Pass\nRainy Pass Lake\nSheep Creek\nSmith Lake\nSouth Fork Kuskokwim River\nTatina River\nTerra Cotta Mountains\nTin Creek\nWidgeon Lake\nWindy Fork Middle Fork Kuskokwim River\nWolverine Creek\nYentna Mining District\n\n\nThis 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).\nAny 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.\n\n\n\nAlaska Division of Geological & Geophysical Surveys\n\nGIS Manager\n\nmailing and physical\n
3354 College Rd
\nFairbanks\nAK\n99709-3707\nUSA\n\n907-451-5020\ndggsgis@alaska.gov\n8 am to 4:30 pm, Monday through Friday, except State holidays\n\n\nFunding was provided by the Alaska State Legislature as part of the DGGS Airborne Geophysical/Geological Mineral Inventory (AGGMI) program, the Alaska Strategic and Critical Minerals Assessment Capital Improvement Project (SCMA), and by a contribution from Cook Inlet Region, Inc.\n\n\nDGGS Staff\n2014\nAirborne GeophysWeb: A compilation of geophysical data from DGGS and cooperating agencies\n\nDigital Data Series\nDDS 2\n\n\nFairbanks, Alaska, United States\nAlaska Division of Geological & Geophysical Surveys\n\nhttp://doi.org/10.14509/27222\n\n\n\n\nGeoterrex-Dighem\nFugro Airborne Surveys\nStevens Exploration Management Corp.\nPritchard, R.A.\nBurns, L.E.\nEmond, A.M.\nDGGS Staff\n2016\nSub-regional, merged, gridded airborne geophysical data\n\nDigital Data Series\nDDS 12\n\n\nFairbanks, Alaska, United States\nAlaska Division of Geological & Geophysical Surveys\n\n1 DVD\nhttp://doi.org/10.14509/29555\n\n\n\n\n\nGeophysical data were acquired according to 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.\n\nData originate from one company using the same contract specifications for all data. The originating coordinate system was retained for all publication products.\nThis data set includes files that contain processed aeromagnetic measurements, electromagnetic measurements, altimetry measurements, and locational data for the entire survey area.\n\n\nThese data are positioned with post-processed differential GPS. Discussion of grid resolution and factors that may impact the overall horizontal accuracy of the gridded data is available in the documents directory of this data distribution package.\n\n\nNot applicable\n\n\n\n\n\n\nBurns, L.E.\nCGG\nFugro GeoServices, Inc.\n2014\nFarewell survey area: Airborne magnetic, electromagnetic and radiometric data in line (point), grid, vector, and map formats, McGrath and Lime Hills quadrangles, south-central Alaska\n\nGeophysical Report\nGPR 2014-2\n\n\nFairbanks, Alaska, United States\nAlaska Division of Geological & Geophysical Surveys\n\nscale 1:63,360, 1 DVD\nhttp://doi.org/10.14509/27291\n\n\n63360\npaper\n\n\n\n2014\n\n\npublication date\n\nBurns, L.E. and others, 2014\nData collection, processing, and delivery\n\n\n\n\nCGG\nFugro GeoServices, Inc.\n2015\nFarewell and Middle Styx survey areas: Project report, interpretation maps, EM anomalies, stacked multi-channel profiles, and other products of the airborne geophysical surveys, parts of the McGrath, Lime Hills, and Tyonek quadrangles, south-central Alaska\n\nGeophysical Report\nGPR 2014-4\n\n\nFairbanks, Alaska, United States\nAlaska Division of Geological & Geophysical Surveys\n\n22 sheets\nhttp://doi.org/10.14509/29349\n\n\npaper\n\n\n\n2015\n\n\npublication date\n\nCGG and Fugro GeoServices, Inc., 2015\nData collection, processing, and delivery\n\n\nData collection, processing, and delivery - The airborne geophysical data were acquired under contract with CGG and Fugro Airborne Surveys Corp. The contractor's project report and other supporting documents are in the \"documents\" digital data package. They provide detailed documentation of the system specifications, data collection, processing, and delivery.\nBurns, L.E. and others, 2014\nCGG and Fugro GeoServices, Inc., 2015\n2013\n\n\nStandard Boundary Polygon - The final boundary polygon was generated by loading the line data in Geosoft Oasis Montaj v9. The channel rmi_mag was gridded using the Minimum Curvature option with the following settings: grid cell size = 25, blanking distance = 800, cells to extend beyond data = 2. The polygon file was created using Grid Outline tool with edge resolution = 0.2. The polygon file was exported to ESRI shapefile.\n2018\n\n\nSimulated Magnetic Total Field - In this publication's older products and documentation the magnetic data products have been referred to as Total Field Magnetics on the maps and the MAGIGRF channel in the line data and 'magigrf' as a filename abbreviation. The new term 'sim_magtf' has been created to rename and clarify that the data are not representative of the true total magnetic field as the IGRF values have been removed with a single average value added back to the entire dataset, resulting in the IGRF gradient being removed. The term simulated magnetic total field and the filename abbreviation 'sim_magtf' is now used to identify these magnetic data.\n2018\n\n\nRGB GeoTiff creation - RGB GeoTIFF raster files of gridded data were exported using Geosoft v9 by loading each Geosoft grid onto a map and using the map export tool.\n2019\n\n\nGeoPDF creation - Geospatial pdf file created using the Export Map function in Geosoft Oasis Montaj v9 with all maps layers visible.\n2019\n\n\nDXF conversion and geographic referencing - Contractor provided AutoCAD DXF files were converted to an ESRI Geodatabase in ArcMap v10 using the CAD to Geodatabase tool.\n2019\n\n\nKeyhole markup language (kml) KMZ archive creation - Data were exported from Geosoft and ESRI ArcMap to kml format files and/or KMZ archives. These files were then combined and modified in Google Earth Pro to create the final KMZ file.\n2019\n\n\nData cataloged for archival and publication - All files were renamed and placed in a standardized set of folders according to the DGGS Geophysics Data Management Manual. Where applicable and as needed data were converted to newer file formats and new files were created. Supporting documentation including but not limited to readme text files, maps, figures, survey overview report, missing data type explanations, and metadata were created.\n2019\n\n\n\n\n\n\n\nUniversal Transverse Mercator\n\n5\n\n0.999600\n-153\n0\n500000.000000\n0\n\n\n\n\ncoordinate pair\n\n.00000001\n.00000001\n\nMeters\n\n\n\nNorth American Datum of 1927\nClarke 1866\n6378206.40000000037\n294.978698199999997\n\n\n\n\n\n\nascii_data\nASCII format line data, other ASCII data\nCGG, Fugro GeoServices Inc.\nascii_data\n\n\n\n\ndatabases_geosoft\nGeosoft format database of line data, other Geosoft format databases\nCGG, Fugro GeoServices Inc.\ndatabases_geosoft\n\n\n\n\ndocuments\nProject and field reports, survey background information, gridded data explanations, other supporting documentation\nCGG, Fugro GeoServices Inc. and Alaska Division of Geological & Geophysical Surveys (DGGS)\ndocuments\n\n\n\n\ngrids_ermapper\nGeographically registered gridded data, ER Mapper ERS format\nCGG, Fugro GeoServices Inc. and Alaska Division of Geological & Geophysical Surveys (DGGS)\ngrids_ermapper\n\n\n\n\ngrids_geosoft\nGeosoft-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\nCGG, Fugro GeoServices Inc. and Alaska Division of Geological & Geophysical Surveys (DGGS)\ngrids_geosoft\n\n\n\n\nimages_registered\nGeoTiff format images of all gridded data\nAlaska Division of Geological & Geophysical Surveys (DGGS)\nimages_registered\n\n\n\n\nkmz\nKeyhole markup language (kml) kmz archive files of project data. Viewable in Google Earth and other compatible programs\nAlaska Division of Geological & Geophysical Surveys (DGGS)\nkmz\n\n\n\n\nmaps_pdf_format\nPrintable maps in pdf format\nCGG, Fugro GeoServices Inc.\nmaps_pdf_format\n\n\n\n\nmaps_prn_format\nPrintable maps in HPGL/2 printer file format with extension .prn\nCGG, Fugro GeoServices Inc.\nmaps_prn_format\n\n\n\n\nprofiles_stacked\nDistance-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\nCGG, Fugro GeoServices Inc.\nprofiles_stacked\n\n\n\n\nvector_data\nLine path, data contours, and survey boundary in ESRI shapefile (SHP) format, ESRI Geodatabase format, and/or AutoCAD dxf format\nCGG, Fugro GeoServices Inc. and Alaska Division of Geological & Geophysical Surveys (DGGS)\nvector_data\n\n\n\n\nvideo_flightpath\nSurvey flight path downward-facing video\nCGG, Fugro GeoServices Inc.\nvideo_flightpath\n\n\n\n\n\n\n\nState of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys\n\n\nmailing and physical\n
3354 College Road
\nFairbanks\nAK\n99709-3707\nUSA\n\n907-451-5020\n907-451-5050\ndggspubs@alaska.gov\n8 am to 4:30 pm, Monday through Friday, except State holidays\nPlease 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.\n\n\nGPR 2019-12\nThe 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.\n\nDGGS publications are available as free online downloads or you may purchase paper hard-copies or digital files on CD/DVD or other digital storage media by mail, phone, fax, or email from the DGGS Fairbanks office. To purchase this or other printed reports and maps, contact DGGS by phone (907-451-5020), e-mail (dggspubs@alaska.gov), or fax (907-451-5050). Payment accepted: Cash, check, money order, VISA, or MasterCard. Turnaround time is 1-2 weeks unless special arrangements are made and an express fee is paid. Shipping charge will be the actual cost of postage and will be added to the total amount due. Contact us for the exact shipping amount.\nsee http://dx.doi.org/10.14509/30190\n\n\n\n\nDGGS geophysics datasets are typically compilations of multiple digital data file formats. These formats may include: GeoTiff, ESRI shapefile, Geosoft binary grid (GRD), Microsoft Office documents, PDF, ER Mapper ERS, ASCII text files (including CSV), Geosoft ASCII grid (GXF), Geosoft database, AutoCAD DXF, Geosoft plot file (PLT), Printer files (HPP, PRN, or other), digital images (multiple formats), digital video (multiple formats), Geosoft ASCII XYZ, Geosoft ASCII files (PLY, i0, EXP), and KMZ\n\n\n\n\n\nhttp://dx.doi.org/10.14509/30190\n\n\n\n\n\nFree download\n\n\n\n20190620\n\n\n\nSimone Montayne\n\n\nmailing and physical\n
3354 College Road
\nFairbanks\nAK\n99709-3707\nUSA\n\n907-451-5020\n\n\nFGDC Content Standard for Digital Geospatial Metadata\nFGDC-STD-001-1998\nIf the user has modified this metadata file in any way, the user is obligated to describe the types of modifications the user has made. User specifically agrees not to misrepresent this metadata file, 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.\n\nhttp://www.dggs.alaska.gov/metadata/dggs.ext\ndggs metadata extensions\n\n\n\n","source_transform":null,"status":"error"}