Sainsbury, C.L.Curry, K.J.Hamilton, J.C.1973geodatabaseBulletinB 1361United StatesU.S. Geological Survey28 p., 2 sheetshttps://dggs.alaska.gov/pubs/id/6969An integrated system of geologic mapping and geochemical sampling by light aircraft, Bulletin 1361, presents the results of reconnaissance geologic mapping and airborne geochemical sampling that were carried out in 1969 throughout parts of the Bendeleben A-4, B-3, and B-4 quadrangles and the adjacent portion of the Bendeleben 1:250,000 quadrangle on the Seward Peninsula, Alaska. The mapping showed that reliable 1:250,000 scale reconnaissance geologic maps could be produced rapidly and at low cost from light aircraft, with mineralized structures, gossans, and prospective areas successfully identified from the air. Airborne sampling devices recovered adequate soils, stream sediments, and rock fragments for analysis, outlining strong and moderate multimetal anomalies in several test areas and confirming the absence of anomalies in unmineralized regions. Helicopter-adapted devices allowed sampling in forested terrain and steep slopes that previously required foot traverses. Overall, the results demonstrated that combined light-aircraft and helicopter methods provided an effective and economical approach for detecting geologic features and geochemical anomalies across varied terrain on the Seward Peninsula. The dataset provides geologic, structural, stratigraphic, and geochronologic information organized according to the GeMS and AK GeMS mapping schemas. The complete report, geodatabase, and ESRI fonts and style files are available from the DGGS website: https://dggs.alaska.gov/pubs/id/6969.The purpose of this report was to document reconnaissance geologic mapping and airborne geochemical sampling completed in 1969 in the Bendeleben A-4, B-3, B-4, and adjacent Bendeleben 1:250,000 quadrangles on the Seward Peninsula, Alaska, to support a clearer understanding of geologic conditions relevant to mineral exploration and resource evaluation in the region. The results provided new information on the distribution of geologic units, structural features, and geochemical anomalies, strengthening Alaska's ability to identify areas with mineral potential and to guide future exploration and land-management decisions.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/10.14509/3058419692026ground conditionCompleteNone planned-164.004300-163.17954765.38150765.111329ISO 19115 Topic CategorygeoscientificInformationAlaska Division of Geological & Geophysical SurveysAerialAlluvialAlluviumAmphiboliteBatholithBedrockBedrock Geologic MapBedrock GeologyExplorationFaultingFaultsGeMS DB L3 CompliantGeMS DB v2GeneralizedGeochemistryGeologicGeologic MapGeologyGneissGoldGraniteGraphiteGravelHornfelsIgneousIntrusiveMarbleMetamorphicMonzoniteOrePhyllitePingosPlacerRegionalRocksSchistSedimentSedimentaryShaleSlateSurficialTalusAlaska Division of Geological & Geophysical SurveysBaker CreekBendeleben MountainsBoston CreekChauik MountainCouncil Mining DistrictDillon CreekFish RiverFlat CreekHelena CreekKingsley CreekKougarok Mining DistrictLanagan CreekMinnie CreekMount BoyanNesbit CreekNiukluk RiverOphir CreekOregon CreekPargon RiverTrilby CreekWalker, J.D., Geissman, J.W., Bowring, S.A, and Babcock, L.E., comp., 2012, Geologic Time Scale v. 4.0: Geological Society of AmericaCretaceousPrecambrianQuaternaryTertiaryThis 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 physical

3354 College Road

FairbanksAK99709-3707USA(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.Sainsbury developed the mapping techniques, prepared the geologic maps, and collected the test samples. Curry conducted replicate spectrographic analyses on duplicate sample splits, and Hamilton performed additional check analyses that helped refine the analytical results, with other analysts credited in the tables. Harry W. Smedes field checked the air-traverse geologic maps, and Daniel R. Shawe assisted Sainsbury during testing of the sand-scoop sampling devices. Robert Emmons of the Alaska State Division of Highways provided logistical support by storing fuel and supplies at his field headquarters north of Nome. All contributions are gratefully acknowledged. Kinney Engineering, LLC staff used scanned and georeferenced paper maps to digitize geologic features into an AK GeMS database. Chris Wyatt conducted quality control of this digitizing work and completed the creation of the AK GeMS database. Ally M. Steinleitner implemented final database quality control and packaging. This geologic map (or report or conversion or product, etc.) was funded by the USGS National Cooperative Geologic Mapping Program under STATEMAP award number G24AC00521, 2024, 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.Blessington, M.J.Werdon, M.B.Seitz, S.S.Mulliken, K.M.2016Raw Data FileRDF 2016-11Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys4 phttps://doi.org/10.14509/29473Emond, A.M.Fusso, L.A.SkyTEM Canada Incorporated2024Geophysical ReportGPR 2024-2Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys9 phttps://doi.org/10.14509/31303Newberry, R.J.1995Public Data FilePDF 95-20Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys72 p., 1 DVDhttps://doi.org/10.14509/1699Pinney, D.S.Duenwald, E.S.2001Miscellaneous PublicationMP 43Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys69 p., 2 sheets, scale 1:2,500,000, 1 DVDhttps://doi.org/10.14509/2770Reger, R.D.Cruse, G.R.Stevens, D.S.P.Smith, R.L.2003Miscellaneous PublicationMP 51Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys5 sheets, scale 1:250,000https://doi.org/10.14509/2962Reioux, D.A.Werdon, M.B.Seitz, S.S.Mulliken, K.M.2016Raw Data FileRDF 2016-12Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys6 phttps://doi.org/10.14509/29474Robinson, M.S.Stevens, D.L.1984Special ReportSR 34Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys1 sheet, scale 1:500,000https://doi.org/10.14509/2633Werdon, M.B.Stevens, D.S.P.Newberry, R.J.Szumigala, D.J.Athey, J.E.Hicks, S.A.2005Report of InvestigationRI 2005-1Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys24 phttps://doi.org/10.14509/7192Werdon, M.B.Szumigala, D.J.Newberry, R.J.Athey, J.E.Hicks, S.A.2005Raw Data FileRDF 2005-2Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys46 phttps://doi.org/10.14509/7130Attribute 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.All polygon features were topologically validated according to the AK GeMS geologic mapping schema specifications.This publication is a U.S. Geological Survey Bulletin (B), which present significant scientific data and interpretations of lasting value. Each Bulletin is considered complete for the scientific information it contains, and no additional chapters or companion volumes are required to understand the material presented.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.Ekberg, P.G.Hendricks, M.D.Athey, J.E.2021Miscellaneous PublicationMP 169Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys7 phttps://doi.org/10.14509/30584paper2021publication dateEkberg, P.G. and others, 2021GIS analysis and digital cartographyHendricks, M.D.Ekberg, P.G.Athey, J.E.Wyatt, W.C.Willingham, A.L.Naibert, T.J.2021Miscellaneous PublicationMP 170Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys10 phttps://doi.org/10.14509/30669paper2021publication dateHendricks, M.D. and others, 2021GIS analysis and digital cartographyU.S. Geological Survey National Cooperative Geologic Mapping Program2020Techniques and MethodsTM 11-B10United StatesU.S. Geological Survey1 phttps://dggs.alaska.gov/pubs/id/30585paper2020publication dateU.S. Geological Survey National Cooperative Geologic Mapping Program, 2020GIS analysis and digital cartographyGeologic mapping - Reconnaissance geologic mapping was carried out using light-aircraft traverses to identify and plot geologic units, structural features, gossans, and areas of mineral potential. Mapping was supported by field checks from helicopter and ground observations. Airborne sampling devices mounted on light aircraft were used to collect soils, stream sediments, and rock fragments at intervals of 2 to 3 minutes, and prototype samplers were tested for their ability to recover material suitable for spectrographic analysis. Additional sampling was completed from helicopters to reach forested terrain, steep slopes, and stream corridors. Spectrographic analyses of duplicate and check samples were performed by multiple analysts to verify and refine geochemical results. These combined mapping and sampling procedures provided consistent geologic and geochemical coverage across the study area.1969Data packaging - DGGS organized and attributed the geologic and geographic features according to the AK GeMS schema, then programmatically transformed the data into four distribution formats: (1) an AK GeMS data package containing the full database and supporting files, (2) a GeMS data package converted to the USGS base standard, (3) a SQLite database file, and (4) a simplified shapefile package with shapefile representations of the data.2026vectorUniversal Transverse Mercator30.999600-1650500000.0000000coordinate pair.00000001.00000001MetersNAD27Clarke 18666378206.4294.9786982bendeleben_a4_b3_b4_part_ak_gems_dbGeodatabase, layer files, style files, and fontsDGGS and USGSbendeleben_a4_b3_b4_part_ak_gems_dbbendeleben_a4_b3_b4_part_gems_dbGeodatabase, layer files, style files, and fontsDGGS and USGSbendeleben_a4_b3_b4_part_gems_dbbendeleben_a4_b3_b4_part_gems_geopackageSQLite Database fileDGGS and USGSbendeleben_a4_b3_b4_part_gems_geopackagebendeleben_a4_b3_b4_part_gems_shapefileShapefiles and open data filesDGGS and USGSbendeleben_a4_b3_b4_part_gems_shapefileAlaska Division of Geological & Geophysical SurveysMetadata Managermailing and physical

3354 College Road

FairbanksAK99709-3707USA(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.B 1361The 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 pricinggeodatabasegeologic maphttps://dggs.alaska.gov/pubs/id/6969Free download20260901Alaska Division of Geological & Geophysical SurveysSimone MontayneMetadata Managermailing and physical

3354 College Road

FairbanksAK99709-3707USA(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