Mayfield, C.F.Ellersieck, InyoTailleur, I.L.1987Reconnaissance geologic map of the Noatak C5, D5, D6 and D7 quadrangles, AlaskageodatabaseMiscellaneous Investigations Series MapI 1814United StatesU.S. Geological Survey1 sheet, scale 1:63,360https://dggs.alaska.gov/pubs/id/12879Reconnaissance geologic map of the Noatak C5, D5, D6 and D7 quadrangles, Alaska, Miscellaneous Investigations Series Map 1814, covers the northwestern part of the Noatak 1:250,000 quadrangle, an area of low relief characterized by gently sloping hills and broad tundra surfaces on unconsolidated deposits. Elevations range from sea level to 475 m at Mount Jarvis. Bedrock study is limited by scarce exposures; most hilltops are rubble covered and stream outcrops are few. Stratigraphic and structural relations are inferred largely from better exposed areas elsewhere in the western Brooks Range. Fieldwork for this map was conducted in June and July 1981, supplemented by earlier geologic studies, fossil collections, unpublished mapping, and aeromagnetic surveys. Bedrock geology consists of multiple thrust sheets containing coeval but lithologically variable rock successions. These thrust sheets are grouped into seven allochthons, each containing one or more sequences of sedimentary or igneous rocks. The Kelly River allochthon contains three sequences (Amphitheatre, Kelly, Eli) distinguished by differences in Mississippian units, especially the thickness and character of the Kogruk Formation and associated overlying and underlying strata. Regional studies indicate that thrusting began in Middle or Late Jurassic time during Brooks Range orogeny and largely ceased by Albian time, with later folding likely occurring between middle Cretaceous and early Tertiary. Cross sections illustrate generalized structural relations but remain speculative due to limited exposure. Thrust faults and allochthon boundaries are projected using structural styles observed in more mountainous areas. Intrasequence thrust sheets in the Amphitheatre and Kelly sequences form complex stacks between major interallochthon faults. Minimum regional shortening between the lowest and highest allochthons is on the order of hundreds of kilometers. Fossil collections from 1926 through 1981 provide age control for several units. 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/12879.This mapping improves Alaska's ability to evaluate mineral and hydrocarbon resource potential in the northwestern Noatak region. By defining the distribution of thrust sheets, allochthons, and key Mississippian carbonate units, the work strengthens geologic models used to assess zinc lead silver mineral systems and to understand the significance of regional bitumen seeps and other hydrocarbon indicators. The resulting geologic framework supports informed land use planning, resource permitting, and exploration decisions, providing the State, industry, and researchers with reliable geologic information for a remote and under exposed part of northwest Alaska.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/10.14509/30584.1981ground conditionNone planned-165.277389-163.97825168.00288367.499772ISO 19115 Topic CategorygeoscientificInformationAlaska Division of Geological & Geophysical SurveysAlgaeAllochthonAlluvialAmphiboleArgilliteArkoseAugiteBasaltBasinsBedrockBedrock GeologyBiotiteBrachiopodsBuchiaChalcedonyChertClayCoastalConglomerateConodontsContactCoralsCorrelationCrinoidsDiabaseDioriteDolomiteEpidoteFaultingFaultsFeldsparFoldsFormationsFossilsGabbroGastropodsGeneralizedGeologicGeologic MapGeologyGlacialGravelHornblendeIceIgneousInoceramusIntrusiveLacustrineLimestoneMarineMegafossilsMetabasiteMetamorphicMetamorphismMineralsMonotisMudstoneOstracodsOutcropOutwashPelecypodsPeridotitePetroleumPlagioclasePlutonicPotassiumQuartzQuartziteRadiolariansRegionalRocksSandSandstoneSchistSedimentSedimentarySericiteSerpentiniteShaleSiltSiltstoneStructureSubsurfaceSurfaceSurficialTalusTerraceTillTundraUltramaficUnconformityVolcanicAlaska Division of Geological & Geophysical SurveysAgvignak CreekAkalugrak PangaAkalugram CreekAsikpak LagoonAsikpak MountainAsikpak RiverAtanaaqAtinakAuvom CreekAvenak MountainCape SeppingsCompany CreekCompany MountainIgrak HillIgrugaivik CreekImagatsiak CreekImikruk CreekImikruk LagoonImnakuk BluffImnakuk CreekImnauralik CliffIpiavik LagoonItiptigvirak NeckItiviak PassItugralurakKagakaglik BankKalgiksuk CreekKangiligaurak CreekKangnirvik CreekKavrorak HillKavrorak LagoonKavrorak SpringsKayakturiak CreekKikiaktaurvikKikiktauralik LakeKili HillKilogorak SpitKingikturak BankKisaymaruktuk MountainKisemaraktuk MountainKisimigiuktuk HillKisimilat CreekKisimilot MountainsKitingirak GapKitiram Ipitanga HillsKivalik InletKivalinaKivalina LagoonKivalina RiverKunguyoluk BendLisburne Mining DistrictMount JarvisNadviktak CreekNasorak HillNew Heart CreekNoatakNoatak Mining DistrictNulagvik LagoonNuyakaglik LakesOkpiksugrukOkpiksugruk CreekOmikviorok RiverOnakParents MountainsPingalurak BluffPingau HillPogoseluk HillPusaluk LagoonPusaluk MountainSakrorak CreekSakrorak MountainSeppings LagoonSiagrorakSiaktak HillsSigogalik InletSigvu InletSigvu LagoonSimik HillSingauk EntranceSingigrak SpitSingoalik LagoonSingoalik RiverSiniktagnelikSinrakrurak InletSivu BluffSivuchek MountainSivutsiak HillSiyiksinikTagiunituk CreekTasaitsat Angayukangak LagoonTasaitsat LagoonsTasikpak CreekTasikpak LagoonTatigirok CreekTatigirok HillTatsimisaTugak LagoonTulukak CreekTulurakTurakiligorakUkpiksukUmagatsaiak MountainUmagatsiak CreekUmagvirakUmarachek CreekUmarachek PeakUmiak BendUsakUtkusikrak HillUyaraksivik HillWulik RiverAlaska Division of Geological & Geophysical SurveysAmphitheater GroupBaird GroupEli LimestoneEndicott GroupEtivluk GroupFortress Mountain FormationIpnavik River AllochthonKayak ShaleKogruk FormationKuna FormationNuka FormationOkpikruak FormationOtuk FormationPicnic Creek AllochthonSiksikpuk FormationUtukok FormationWalker, J.D., Geissman, J.W., Bowring, S.A, and Babcock, L.E., comp., 2012, Geologic Time Scale v. 4.0: Geological Society of AmericaCenozoicCretaceousDevonianJurassicMesozoicMississippianPaleozoicPennsylvanianQuaternaryTertiaryTriassicThis 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 map was converted to GeMS or digitized into GeMS by Kinney Engineering, LCC., quality controlled, and then finalized by DGGS staff (Chris Wyatt). 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.Dow, W.G.1998Organic geochemistry of Cretaceous, Jurassic, and Triassic shales from the northwestern De Long Mountains, western Brooks Range, Alaska, 1994-1997Public Data FilePDF 98-35Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys181 p., 1 sheet, 1 DVDhttps://doi.org/10.14509/1861Dow, W.G.2000Geochemical analysis of outcrop samples from Tingmerkpuk projectRaw Data FileRDF 2000-3Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys66 p., 1 sheet, scale 1:250,000https://doi.org/10.14509/2660Dow, W.G.Talukdar, S.C.1995Geochemical analysis of outcrop samples northwestern De Long Mountains, Brooks Range, AlaskaPublic Data FilePDF 95-29Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys43 phttps://doi.org/10.14509/1708Hubbard, T.D.Wolken, G.J.2024Surficial-geologic map of the Kivalina area, northwest AlaskaPreliminary Interpretive ReportPIR 2024-8Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys5 p., 1 sheet, scale 1:50,000https://doi.org/10.14509/31300LePain, D.L.Adams, K.E.1999Stratigraphy and depositional setting of the Tingmerkpuk sandstone (Neocomian), northwestern De Long Mountains, western Arctic Slope, AlaskaPreliminary Interpretive ReportPIR 1999-2Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys5 p., 1 sheet, scale 1:127https://doi.org/10.14509/2244Mickey, M.B.Haga, Hideyo1998Micropaleontogy of Cretaceous and Jurassic shales from the northwestern De Long Mountains, western Brooks Range, Alaska, 1994-1997Public Data FilePDF 98-34Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys193 p., 1 sheet, scale 1:250,000https://doi.org/10.14509/1860Mickey, M.B.Haga, Hideyo2000Biostratigraphy report, 129 outcrop samples, western De Long Mountains (Tingmerkpuk) North Slope, AlaskaPreliminary Interpretive ReportPIR 2000-8Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys99 p., 1 sheet, scale 1:250,000https://doi.org/10.14509/2667Mickey, M.B.Haga, HideyoMull, C.G.1995Paleontologic data: Tingmerkpuk Sandstone and related units, northwestern De Long Mountains, Brooks Range, AlaskaPublic Data FilePDF 95-31Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys44 phttps://doi.org/10.14509/1710Mull, C.G.1995Preliminary evaluation of the hydrocarbon source rock potential of the Tingmerkpuk Sandstone (Neocomian) and related rocks, northwestern De Long Mountains, Brooks Range, AlaskaPublic Data FilePDF 95-30Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys22 phttps://doi.org/10.14509/1709Mull, C.G.2000Summary report on the geology and hydrocarbon potential of the foothills of the northwestern De Long Mountains, western Brooks Range, AlaskaPreliminary Interpretive ReportPIR 2000-9Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys16 phttps://doi.org/10.14509/2668Mull, C.G.Adams, K.E.1989Bedrock geology of the eastern Koyukuk basin, central Brooks Range, and east-central Arctic Slope along the Dalton Highway, Yukon River to Prudhoe Bay, Alaska, Volume 2GuidebookGB 7 vol. 2Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys167 p., 1 sheet, scale 1:2,851,200https://doi.org/10.14509/2875Attribute 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 Miscellaneous Investigations Map (I Series), a series that presents interpretive geologic studies, maps, and graphics on a wide range of scientific topics. I Series maps provide detailed geologic information supported by field observations, analytical data, and topical investigations. They supply practical, site specific geologic documentation intended to support scientific research, resource evaluation, land management, and regional geologic interpretation.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.2021AK GeMS symbology: A description of the AK GeMS style fileMiscellaneous 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.2021AK GeMS data dictionary: A description of the Alaska geologic mapping schemaMiscellaneous 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 Program2020GeMS (Geologic Map Schema) - A standard format for the digital publication of geologic mapsTechniques 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 - Field mapping was conducted in June and July 1981 in the northwestern Noatak quadrangle. Bedrock observations were made at scattered outcrops, rubble covered hilltops, and limited stream exposures. Stratigraphic and structural relations were interpreted by comparing local observations with better exposed areas elsewhere in the western Brooks Range. Earlier geologic studies, fossil collections, unpublished mapping, and aeromagnetic survey results were reviewed and incorporated into the compilation. Thrust sheets, allochthon boundaries, and structural contacts were projected using structural styles documented in nearby mountainous areas. Cross sections were constructed to show generalized structural relations based on available surface data and inferred subsurface geometry.1981Data 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 18666378206.4294.9786982noatak_c5_d5_d6_d7_quads_ak_gems_dbGeodatabase, layer files, style files, and fontsDGGS and USGSnoatak_c5_d5_d6_d7_quads_ak_gems_dbnoatak_c5_d5_d6_d7_quads_gems_dbGeodatabase, layer files, style files, and fontsDGGS and USGSnoatak_c5_d5_d6_d7_quads_gems_dbnoatak_c5_d5_d6_d7_quads_gems_geopackageSQLite Database fileDGGS and USGSnoatak_c5_d5_d6_d7_quads_gems_geopackagenoatak_c5_d5_d6_d7_quads_gems_shapefileShapefiles and open data filesDGGS and USGSnoatak_c5_d5_d6_d7_quads_gems_shapefileAlaska 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.I 1814The 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/12879Free download20260901Alaska 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