Fusso, L.A.Petersen, E.I.Emond, A.M.EON Geosciences Inc.2026Kuskokwim airborne magnetic and radiometric geophysical survey, Ganes Creek, Alaska (2026)digital, dataGeophysical ReportGPR 2026-1Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys16 p.https://doi.org/10.14509/31746Kuskokwim airborne magnetic and radiometric geophysical survey, Ganes Creek, Alaska (2026), Geophysical Report 2026-1, survey covers part of the Kuskokwim Mountains west of McGrath, Alaska. The survey area includes parts of the Ophir, Medfra, Iditarod, and McGrath quadrangles. EON Geosciences Inc. collected magnetic and radiometric data with a Eurocopter AS350 B2 helicopter from June 21 to September 7, 2024, and a Eurocopter AS350 B3+ helicopter from June 16 to 25, 2025. A total of 25,731 line kilometers were collected, covering 8,197 km2. Magnetic data were collected with a Scintrex CS-3 cesium-vapour split-beam sensor. Radiometric data were collected with two Radiation Solutions RS-500 series multi-channel gamma-ray spectrometers, model RSX-5, with 512 channels, for a total crystal volume of 33.6 liters downward-looking and 8.4 liters upward-looking (for atmospheric radon detection). Data from the Ganes Creek survey will improve the understanding of the geology and mineral potential of the central Kuskokwim River region and promote resource exploration in this part of Alaska. These data are provided as a Geophysical Report under an open end-user license and are available from the DGGS website https://doi.org/10.14509/31746.The purpose of this report is to provide airborne magnetic and radiometric geophysical data to improve understanding of the geology and mineral potential of the central Kuskokwim River region and to support resource exploration efforts. These high-resolution data help identify concealed lithologic contacts, structural features, and alteration zones associated with gold and other metallic mineral deposits.>ascii_data: ASCII format line data, other ASCII data
>databases_geosoft: Geosoft format database of final line data, other Geosoft format databases
>documents: Project report, calibration reports
>grids_geosoft: Oasis montaj Geosoft GRD format gridded data
>grids_tif: Geographically registered data value rasters of gridded data, GeoTiff format
>kmz: Keyhole Markup Language (KML) kmz archive files of project data. Viewable on Google Earth and other compatible programs
>maps_pdf: Printable and geographically registered maps in pdf format.
>vector_data: Line path and survey boundary in Esri shapefile (shp) format20242025ground conditionNone planned-158.421676-154.27384963.36146962.210795ISO 19115 Topic CategorygeoscientificInformationAlaska Division of Geological & Geophysical SurveysAeromagneticAeromagnetic DataAeromagnetic MapAeromagnetic SurveyAirborne Geophysical SurveyAnalytic SignalBedrock GeologyCritical MineralsDGGSEarth MRIEconomic GeologyEconomic StudyExplorationFixed Wing SurveyGeologyGeophysical MapGeophysical SurveyGeophysicsGeophysics Search TagGridded DataMagnetic ContoursMagnetic DataMagnetic SurveyMagnetic SusceptibilityMagneticsMineral AssessmentMineral DevelopmentMineral ExplorationMineral ResourcesMineralsRadiometric SurveyRadiometricsRemote SensingAlaska Division of Geological & Geophysical SurveysAlder CreekAmerican CreekAniak Mining DistrictAnvil CreekBaker CreekBasin CreekBeaver CreekBeaver MountainsBeef Steak CreekBig CreekBilly Goat CreekBlack CreekBlack PassBonanza CreekBonanza FlatsBonnie CreekBoulder CreekBrown CreekBrush PeakButte CreekCalifornia CreekCamelback MountainCanadian CreekCandle CreekCandle HillsCandle PlacerCaribou CreekCaribou MountainCarl CreekChicken CreekChicken MountainClear CreekCloudy MountainCrater MountainDeadwood CreekDishna RiverDodge CreekDollar CreekDome CreekDominion CreekDonovan CreekEagle CreekEster CreekFairbanks CreekFirst Chance CreekFlatFlat CreekFrench Joe MountainFrisco CreekGalickson CreekGanes CreekGeorge RiverGlacier CreekGold RunGoldbottom CreekGranite CreekGuggenheim CreekHappy CreekHenry CreekHickey CreekHidden CreekHurst CreekIditarod Mining DistrictIditarod RiverIndependence CreekInnoko Mining DistrictInnoko RiverIvy CreekJohn Reek CreekJones CreekJumbo PeakKuskokwim MountainsLast Chance CreekLedge CreekLimestone MountainLincoln CreekLong CreekMaiden CreekMalamute GulchMartin CreekMaybe CreekMcGrath Mining DistrictMedicine CreekMinnie CreekMontana CreekMoore CreekMoose CreekMount HurstMount JoaquinMurray CreekMystery CreekNaden CreekNixon ForkNixon RiverOphirOphir CreekOtter CreekPedro CreekPorcupine CreekPorcupine RidgePrince CreekPuzzle CreekReady Bullion CreekRex CreekRoberts CreekRuby CreekRuby Mining DistrictScow Harry CreekShoaty CreekSlate CreekSpalding CreekSpruce CreekSteak CreekSteel CreekStrand PeakSubmarine CreekSunset CreekSwinging DomeTakotnaTakotna MountainTakotna RiverTamarack CreekTango CreekTatalina RiverTecla CreekTimber CreekTolstoi CreekTolstoi LakeTwin Island CreekTwin MountainWabash CreekWarner CreekWashington CreekWidgeon CreekWillow CreekWindy CreekYankee CreekThis 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).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.Alaska Division of Geological & Geophysical SurveysMetadata Managermailing and physical3354 College RoadFairbanksAK99709-3707USA(907)451-5020(907)451-5050dggspubs@alaska.gov8 am to 4:30 pm, Monday through Friday, except State holidaysPlease 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.This work was funded by the United States Geological Survey Earth Mapping Resources Initiative (Earth MRI) grants G22AC00475 and G23AC00408. The authors thank Eon Geosciences for their expertise in geophysical data collections. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the opinions or policies of the U.S. Geological Survey. Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey.Emond, A.M.MPX Geophysics LTD2023Kuskokwim airborne magnetic and radiometric geophysical survey, northern Kuskokwim MountainsGeophysical ReportGPR 2023-1Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys4 phttps://doi.org/10.14509/31087Emond, A.M.Fusso, L.A.Geotech Ltd.2024Kuskokwim airborne magnetic and radiometric survey, Sischu MountainsGeophysical ReportGPR 2024-1Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys4 phttps://doi.org/10.14509/31094Fusso, L.A.Petersen, E.I.New Resolution Geophysics, USA2025Kuskokwim airborne magnetic and radiometric survey, Kilbuck and Buckstock Mountains, AlaskaGeophysical ReportGPR 2025-5Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys18 phttps://doi.org/10.14509/31724Fusso, L.A.Petersen, E.I.Emond, A.M.EON Geosciences Inc.2025Kuskokwim airborne magnetic and radiometric survey, northern Kaiyuh Mountains, AlaskaGeophysical ReportGPR 2025-3Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys18 phttps://doi.org/10.14509/31493Fusso, L.A.Petersen, E.I.Emond, A.M.EON Geosciences Inc.2026Kuskokwim airborne magnetics and radiometric geophysical survey, McGrath, AlaskaGeophysical ReportGPR 2026-2Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys17 phttps://doi.org/10.14509/31804Petersen, E.I.Fusso, L.A.Emond, A.M.SkyTEM Canada IncorporatedAqua Geo Frameworks LLC2025Kuskokwim airborne electromagnetic survey, northern Kaiyuh Mountains, AlaskaGeophysical ReportGPR 2025-2Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys8 phttps://doi.org/10.14509/31304Petersen, E.I.Fusso, L.A.Geotech Ltd.Aqua Geo Frameworks LLC2026Granite Mountain airborne electromagnetic survey, Kuskokwim Region, AlaskaGeophysical ReportGPR 2026-4Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys8 phttps://doi.org/10.14509/31964Petersen, E.I.Fusso, L.A.Geotech Ltd.Aqua Geo Frameworks LLC2026Candle Hills airborne electromagnetic survey, Kuskokwim region, AlaskaGeophysical ReportGPR 2026-3Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys9 phttps://doi.org/10.14509/31963GeophysiScal 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.Data were supplied by providers in accordance with DGGS contract requirements (see accompanying project report). The originating coordinate system was retained for all publication products.The dataset provides processed geophysical and positional data for the entire survey extent.Station coordinates were positioned using a real-time or post-processed corrected differential GPS.Not applicableData acquisition - EON Geosciences Inc (fig. 1) collected magnetic and radiometric data with a Eurocopter AS350 B2 helicopter from June 21 to September 7, 2024, and a Eurocopter AS350 B3+ helicopter from June 16 to 25, 2025. A total of 25,731 line kilometers were collected, covering 8,197 km2. Magnetic data were collected with a Scintrex CS-3 cesium-vapour split-beam sensor. Radiometric data were collected with two Radiation Solutions RS-500 series multi-channel gamma-ray spectrometers, model RSX-5, with 512 channels, for a total crystal volume of 33.6 liters downward-looking and 8.4 liters upward-looking (for atmospheric radon detection).2025Data cataloged for archival and publication - Final data were published and archived by DGGS.2026rasterUniversal Transverse Mercator40.999600-1590500000.0000000coordinate pair.00000001.00000001MetersWGS84WGS 846378137298.257223563ascii_dataASCII format line data, other ASCII dataEON Geosciences Inc.ascii_datadatabases_geosoftGeosoft format database of final line data, other Geosoft format databasesEON Geosciences Inc.databases_geosoftdocumentsProject report, calibration reportsEON Geosciences Inc. and Alaska Division of Geological & Geophysical Surveys (DGGS)documentsgrids_geosoftOasis montaj Geosoft GRD format gridded dataEON Geosciences Inc. and Alaska Division of Geological & Geophysical Surveys (DGGS)grids_geosoftgrids_tifGeographically registered data value rasters of gridded data, GeoTiff formatAlaska Division of Geological & Geophysical Surveys (DGGS)grids_tifkmzKeyhole Markup Language (KML) kmz archive files of project data. Viewable on Google Earth and other compatible programsAlaska Division of Geological & Geophysical Surveys (DGGS)kmzmaps_pdfPrintable and geographically registered maps in pdf format.EON Geosciences Inc.maps_pdfvector_dataLine path and survey boundary in Esri shapefile (shp) formatAlaska Division of Geological & Geophysical Surveys (DGGS)vector_dataAlaska Division of Geological & Geophysical SurveysMetadata Managermailing and physical3354 College RoadFairbanksAK99709-3707USA(907)451-5020(907)451-5050dggspubs@alaska.gov8 am to 4:30 pm, Monday through Friday, except State holidaysPlease 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.GPR 2026-1The 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.DGGS 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.Contact DGGS for current pricingGeoTiff, ESRI shapefile, Geosoft binary grid (GRD), Microsoft Office documents, PDF (with or without georeferencing), ER Mapper ERS, ASCII text files (including CSV), Geosoft database, AutoCAD DXF, Geosoft plot file (PLT), digital images (multiple formats), georeferenced photos (multiple formats), Geosoft ASCII XYZ, Geosoft ASCII files (PLY, i0, EXP), and KMZ.20260618Airborne electromagnetic geophysical survey data compilationhttps://doi.org/10.14509/31746Free download20260618Alaska Division of Geological & Geophysical SurveysSimone MontayneMetadata Managermailing and physical3354 College RoadFairbanksAK99709-3707USA(907)451-5020(907)451-5050dggspubs@alaska.gov8 am to 4:30 pm, Monday through Friday, except State holidaysFGDC Content Standard for Digital Geospatial MetadataFGDC-STD-001-1998If the user has modified the data in any way they are obligated to describe the types of modifications they have performed in the supporting metadata file. User specifically agrees not to imply that changes they made were approved by the Alaska Department of Natural Resources or Division of Geological & Geophysical Surveys.https://dggs.alaska.gov/metadata/dggs.extdggs metadata extensions