{"action":"create","ckan_id":null,"date_created":"Wed, 25 Mar 2026 06:16:01 GMT","date_finished":null,"harvest_job_id":"43798e46-3ede-41a9-8587-060a220eaca6","harvest_source_id":"f4c7bbab-c7ef-4277-a7d3-c25b78854814","id":"6654cb9f-c45a-46c6-9517-a5630c70a70f","identifier":"https://dggs.alaska.gov/webpubs/metadata/P268.xml","parent_identifier":null,"source_hash":"a9e5f6168e5e1798021d02191876925925fb6bac6a14498c535dd241a306c2da","source_raw":"Cady, W.M.Wallace, R.E.Hoare, J.M.Webber, E.J.1955The central Kuskokwim region, AlaskageodatabaseProfessional PaperP 268United StatesU.S. Geological Survey132 p., 5 sheetshttps://dggs.alaska.gov/pubs/id/3818The central Kuskokwim region, Alaska, Professional Paper 268, synthesizes the geology, ecology, and mineral resources of Alaska's central Kuskokwim region. Located within a tectonically active mobile belt, the area features over 60,000 feet of sedimentary and volcanic rock, shaped by repeated mountain-building, faulting, and intrusive events from the Precambrian through the Cenozoic. Key igneous rocks include andesite, basalt, rhyolite, quartz monzonite, and diabase, with associated metamorphic zones. Mineral deposits-especially quicksilver, gold, and tungsten-are concentrated in rolling terrain near intrusive contacts. Geomorphic surfaces and active faults reflect ongoing uplift and erosion. The region's rich geologic history and resource potential make it a significant area for exploration. This data release is a conversion of the originating geospatial data published by the USGS and may include minor modifications necessary for schema compliance. The dataset contains geologic, structural, stratigraphic, and geochronologic data organized according to the GeMS and AK GeMS mapping schemas. The complete report, geodatabase, and ESRI fonts and style files are available from the Alaska Division of Geological & Geophysical Surveys website: http://doi.org/10.14509/3818.This product supports the integration of adjacent mapping efforts by USGS and DGGS staff, enabling multi-map merging across the central Kuskokwim region of southwestern Alaska. It delivers geologic insights that advance resource development by identifying key deposits of quicksilver, gold, and tungsten, and correlating them with specific formations, intrusive bodies, and favorable terrains. By outlining the region's complex tectonic framework and mineralization trends, the report offers a strategic foundation for locating untapped reserves and promoting responsible extraction in one of Alaska's most mineral-rich yet underexplored areas.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/10.14509/3058419451952ground conditionCompleteAs needed-159.892101-156.54711862.30834360.439800ISO 19115 Topic CategorygeoscientificInformationAlaska Division of Geological & Geophysical SurveysAlluvialBasaltBedrockBedrock GeologyBrecciaConglomerateDiabaseFelsicFloodGeMS DB L3 CompliantGeMS DB v2GeneralizedGeologicGeologic MapGeological ProcessGeologyGeomorphologyGlacialGraniteGranodioriteGravelGraywackeHornfelsIgneousIntrusiveLimestoneMetamorphicMineral AssessmentMineral DepositMineral DevelopmentMineral ExplorationMineral LocalitiesMineral ResourcesMineralsMonzoniteOutwashPeatPegmatiteQuartzRhyoliteRocksSandSedimentSedimentaryShaleSiltSiltstoneSurficialTephraTillTuffVolcanicAlaska Division of Geological & Geophysical SurveysAniakAniak LakeAniak Mining DistrictAniak RiverBristol Bay Region Mining DistrictChichitnok RiverChuathbalukChuilnuk MountainsChuilnuk RiverCinnabar CreekCrooked CreekDiscovery CreekDonlin CreekFlat CreekGemuk RiverGeorgetownHoholitna RiverHolitna RiverHolokuk MountainHolokuk RiverIditarod Mining DistrictIditarod RiverItulilik CreekKalskagKiokluk CreekKiokluk MountainsKipchuk RiverKogrukluk RiverKolmakof LakeKolmakof RiverKuskokwim RiverMcGrath Mining DistrictNapaimiutNishlik LakeNogamutNushagak RiverOksotalik CreekOskawalik RiverRed DevilRed Devil CreekShotgun CreekSleetmuteStony RiverSwift RiverTaylor MountainsTevyaraq LakeTitnum CreekTulukaUkhvigchagvagAlaska Division of Geological & Geophysical SurveysGemuk GroupGetmuna Rhyolite GroupHolitna GroupHolokuk BasaltKuskokwim GroupWaterboot BasaltWalker, J.D., Geissman, J.W., Bowring, S.A, and Babcock, L.E., comp., 2012, Geologic Time Scale v. 4.0: Geological Society of AmericaCarboniferousCretaceousDevonianEoceneMioceneOrdovicianPleistocenePlioceneThis 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.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 G23AC00584, 2023, 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.Bundtzen, T.K.Laird, G.M.Gilbert, W.G.1989Material studies along Kuskokwim River, McGrath to Kalskag, southwest AlaskaPublic Data FilePDF 89-16Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys84 phttps://doi.org/10.14509/1419Bundtzen, T.K.Kline, J.T.1986Coal, peat, and geothermal potential of the Kuskokwim area planPublic Data FilePDF 86-88Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys16 phttps://doi.org/10.14509/1289Collazzi, E.J.Ireland, R.R.W.1986Hydrologic reconnaissance of the Kuskokwim River basin between Sleetmute and Aniak, Alaska 1982-1983Report of InvestigationRI 86-16Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys1 sheet, scale 1:385,000https://doi.org/10.14509/2415Laird, G.M.Bundtzen, T.K.1985Resource evaluation, southcentral Kuskokwim Mountains, AlaskaPublic Data FilePDF 85-25Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys2 phttps://doi.org/10.14509/1118Krause, K.J.1984Photointerpretive map of morphological flood-plain deposits and materials resources, middle Kuskokwim River from Sleetmute to KalskagReport of InvestigationRI 84-2Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys4 p., 5 sheets, scale 1:63,360https://doi.org/10.14509/2361Bundtzen, T.K.Conwell, C.N.1982Madhatters of the Kuskokwim Quicksilver MinesMiscellaneous PublicationMP 13Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys5 phttps://doi.org/10.14509/698Jasper, M.W.1962Cinnabar province, Kuskokwim RegionMineral InvestigationMI 194-1Fairbanks, Alaska, United StatesAlaska Division of Mines and Minerals26 phttps://doi.org/10.14509/663Jasper, M.W.1956Parks cinnabar prospect (Willis & Lyman, owners), Sleetmute district, Aniak precinct, Kuskokwim region, Alaska (Sleetmute quadrangle)Prospect EvaluationPE 82-5Fairbanks, Alaska, United StatesAlaska Territorial Department of Mines9 p., 1 sheet, scale 1 inch = 100 feethttps://doi.org/10.14509/2025Jasper, M.W.1955Willis cinnabar property, Sleetmute district, Aniak precinct, Kuskokwim region, AlaskaProspect EvaluationPE 82-3Fairbanks, Alaska, United StatesAlaska Territorial Department of Mines19 p., 2 sheetshttps://doi.org/10.14509/2023Jasper, M.W.1955Kolmakof cinnabar prospect, Western Alaska Mining Company, Aniak precinct, Kuskokwim region, AlaskaProspect EvaluationPE 82-4Fairbanks, Alaska, United StatesAlaska Territorial Department of Mines10 p., 3 sheetshttps://doi.org/10.14509/2024Attribute 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 USGS Professional Paper(P). This is the Premier series of the USGS. It consists of comprehensive reports of wide and lasting interest and scientific importance, characterized by thoroughness of study and breadth of scientific or geographic coverage.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 - Geologic mapping in the Central Kuskokwim Region was conducted in the late 1940s and early 1950s using a combination of field reconnaissance, aerial photograph interpretation, and stratigraphic correlation. Field teams documented lithologic units, structural features, and mineral occurrences across traverses. Topographic base maps and photogrammetric techniques were used to delineate faults, folds, and intrusive contacts. Rock samples were collected for petrographic and geochemical analysis to support unit classification.1955GIS analysis and digital cartography - This data distribution package's geologic and geographic features were organized and attributed according to the AK GeMS geologic mapping schema. The legacy data were programmatically transformed to provide download options in three formats: (1) an AK GeMS data package that includes the complete AK GeMS database and associated files, (2) a GeMS data package that is a conversion of the AK GeMS database into the base GeMS standard published by the USGS, and (3) a shapefile data package that includes two simple shapefile representations of the data.Ekberg, P.G. and others, 2021Hendricks, M.D. and others, 2021U.S. Geological Survey National Cooperative Geologic Mapping Program, 20202025vectorUniversal Transverse Mercator40.999600-1590500000.0000000coordinate pair.00000001.00000001MetersNAD27Clarke 18666378206.4294.9786982central_kuskokwim_region_ak_gems_db_pkgGeodatabase, layer files, style files, and fontsDGGS and USGScentral_kuskokwim_region_ak_gems_db_pkgcentral_kuskokwim_region_gems_db_pkgGeodatabase, layer files, style files, and fontsDGGS and USGScentral_kuskokwim_region_gems_db_pkgcentral_kuskokwim_region_gems_geopackageSQLite Database fileDGGS and USGScentral_kuskokwim_region_gems_geopackagecentral_kuskokwim_region_gems_shapefile_pkgShapefiles and open data filesDGGS and USGScentral_kuskokwim_region_gems_shapefile_pkgAlaska 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.P 268The 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/3818Free download20251002Alaska 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","source_transform":null,"status":"error"}