{"action":"create","ckan_id":null,"date_created":"Sat, 07 Feb 2026 20:30:06 GMT","date_finished":null,"harvest_job_id":"5e5e88d9-683a-467f-8bee-1d6cfcb471c0","harvest_source_id":"31f41541-38a0-400b-b240-10ebcb0acd9a","id":"3c89909c-5f83-4735-bdce-d4ca8f7242e7","identifier":"https://dggs.alaska.gov/webpubs/metadata/PIR2025-4.xml","parent_identifier":null,"source_hash":"d2acc452ca9bd907708c40d743010303ac445efa683d3eb2314749eddd73e193","source_raw":"Larsen, M.C.Regan, S.P.Bull, K.F.Gillis, R.J.Nicolazzo, J.A.Truskowski, C.M.Walser, S.L.Darrow, M.M.2025Geologic investigation of the Haines-Takshanuk Mountains-Chilkat Peninsula area, Southeast AlaskageodatabasePreliminary Interpretive ReportPIR 2025-4Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveyshttps://doi.org/10.14509/31417Geologic investigation of the Haines-Takshanuk Mountains-Chilkat Peninsula area, Southeast Alaska, Preliminary Interpretive Report 2025-4, provides the results of geologic mapping in the Haines-Takshanuk Mountains-Chilkat Peninsula area of Southeast Alaska. The study covers approximately 777 square kilometers across portions of the Skagway A-1, A-2, B-1, B-2, and B-3 quadrangles and culminates in a 1:50,000-scale surficial and bedrock geologic map. Field investigations were conducted at more than 550 stations by helicopter- and boat-supported teams from the Alaska Division of Geological & Geophysical Surveys (DGGS) and the University of Alaska Fairbanks (UAF). Observations included documentation of landform morphology, soil test pit sampling, structural measurements, Schmidt Hammer tests, and collection of rock samples for thin section, geochemical, and petrologic analyses. Organic samples were also obtained for radiocarbon dating. The project was initiated in response to the deadly December 2, 2020, landslide in Haines. The mapping enhances characterization of surficial deposits and bedrock units, provides critical information for landslide hazard assessment and emergency planning, and establishes a foundation for future studies of magmatic and mineralization history in Southeast Alaska. It also builds upon earlier work by Redman and others (1984) and Gilbert (1987, 1988), offering updated insights into the Chatham Strait fault system, Coast shear zone, and Coast Plutonic Complex, thereby strengthening both applied and scientific understanding of the region's geology. 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/10.14509/31417.The Haines geologic mapping project was initiated in response to the deadly December 2, 2020, landslide in Haines, Alaska. The mapping enhances characterization of surficial deposits and bedrock units, provides critical information for landslide hazard assessment and emergency planning, and establishes a foundation for future studies of magmatic and mineralization history in Southeast 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/10.14509/3058420222025ground conditionCompleteNone planned-135.868652-135.28797259.40485459.103003ISO 19115 Topic CategorygeoscientificInformationAlaska Division of Geological & Geophysical SurveysActinoliteAlluvialAlluvial DepositsAlluvial FanAlluviumAmphiboliteApliteArgilliteBasaltBeach DepositsBedrockBedrock GeologyBrecciaChertChloriteColluviumConglomerateDelta DepositsDGGSDiabaseDiopsideDioriteEpidoteFeldsparFelsicFloodplain DepositsFossilsGabbroGarnetGeMS DB L3 CompliantGeMS DB v2GeologyGlacial DepositsGlacial OutwashGlacial Outwash FanGlacial TillGlaciersGlaciofluvial DepositsGneissGraniteGranodioriteHazardsHornblenditeHydrology and Surficial GeologyIgneous RocksLandslideLimestoneMarbleMetabasaltMetamorphic MineralsMetamorphic RocksMetamorphismMetasedimentary RocksMetavolcanic rocksMetavolcanicsMigmatiteMonzodioriteMonzograniteMonzoniteMudstonePaludal DepositsPhyllitePlutonic ComplexPlutonic RocksPyroxeniteQuartziteRegional MetamorphismRock GlaciersSandstoneSchistSedimentary RocksShaleSiltstoneSlateSTATEMAP ProjectSurfaceSurficialSurficial DepositsSurficial Geologic MapSurficial GeologyTalusTonaliteUltramaficUltramafic RocksUnconsolidated DepositsVolcaniclastic RocksAlaska Division of Geological & Geophysical SurveysAlaskaBattery PointChilkat RiverChilkoot RiverDalasuga IslandDeshu IsthmusDevils Punch BowlDok PointFalse Battery PointFerebee RiverFerebee ValleyHalutu RidgeHaska CreekIron MountainJohnson CreekJualin MineJuneau Mining DistrictKalhagu CoveKasidaya CreekKelgaya BayKelgaya PointKicking Horse RiverLehunua PointLetnikof CoveLily LakeLow PointLudaseska CreekMink CreekMount HardingMount VillardMud BayNukdik PointParadise CoveRustabach LakeSeduction PointShakuseyi CreekSherman CreekTakhin RiverTakshanuk MountainsTanani PointTanani VillageTukgahgo MountainVanderbilt PointYindastukiZimovia PointAlaska Division of Geological & Geophysical SurveysGravina-Nutzotin BeltKootznahoo FormationWalker, J.D., Geissman, J.W., Bowring, S.A, and Babcock, L.E., comp., 2012, Geologic Time Scale v. 4.0: Geological Society of AmericaCretaceousMesozoicPaleozoicQuaternarySilurianTertiaryTriassicThis 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.The authors would like to extend their gratitude to John Norton and Cindy Buxton for their generous hospitality, field advice, logistical support, and contributions to the project. Review comments by Trent Hubbard (DGGS) improved and clarified the content of this report. Ally M. Steinleitner implemented final database quality control and packaging. Geologic map conversion to the GeMS standard was funded by the USGS National Cooperative Geologic Mapping Program under STATEMAP award number G21AC10706, 2022, 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.Daanen, R.P.Herbst, A.M.Wikstrom Jones, K.M.Wolken, G.J.2021High-resolution lidar data for Haines, southcentral Alaska, December 8-12, 2020Raw Data FileRDF 2021-4Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys8 phttps://doi.org/10.14509/30595Nicolazzo, J.A.Darrow, M.M.Larsen, M.C.Walser, S.L.2024Rock strength properties of the Haines-Takshanuk Mountains-Chilkat Peninsula area STATEMAP project, Southeast AlaskaRaw Data FileRDF 2024-28Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys4 phttps://doi.org/10.14509/31416Nicolazzo, J.A.Darrow, M.M.Walser, S.L.2024Soil index properties and radiocarbon ages of the Haines-Takshanuk Mountains-Chilkat Peninsula area STATEMAP project, Southeast AlaskaRaw Data FileRDF 2024-27Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys24 phttps://doi.org/10.14509/31415Truskowski, C.M.Gillis, R.J.Bull, K.F.Regan, S.P.2024Major-oxide and trace-element analyses for rock samples from the Haines-Takshanuk Mountains-Chilkat Peninsula area STATEMAP project, southeast AlaskaRaw Data FileRDF 2024-18Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys4 phttps://doi.org/10.14509/31286Truskowski, C.M.Walser, S.L.Larsen, M.C.Nicolazzo, J.A.Gillis, R.J.Bull, K.F.Regan, S.P.Darrow, M.M.Montayne, Simone2024Field station locations and data for the geologic map of the Haines-Takshanuk Mountains-Chilkat Peninsula area STATEMAP project, southeast Alaska, collected in 2022 and 2023Raw Data FileRDF 2024-17Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys3 phttps://doi.org/10.14509/31285Wolken, G.J.Wikstrom Jones, K.M.Whorton, E.N.Gould, A.I.Hendricks, M.D.2017Photogrammetric data of the Haines Highway corridor: May 26, 2014Raw Data FileRDF 2017-6Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys20 phttps://doi.org/10.14509/29736Zechmann, J.M.Daanen, R.P.Wikstrom Jones, K.M.Wolken, G.J.2024Lidar-derived elevation data for Haines, Southeast Alaska, collected October 2021 and October 2022Raw Data FileRDF 2023-18Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys16 phttps://doi.org/10.14509/31034Attribute 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 DGGS Preliminary Interpretive Report (PIR). A PIR provides timely release of maps and reports with a preliminary interpretation of geology or analytical data. Several scientists familiar with the geology of map area reviewed this product for general readability and logical consistency, but it has not undergone technical peer review.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 cartographyGilbert, W.G.1988Preliminary geology of the northern Chilkat Range, southeastern AlaskaReport of InvestigationRI 88-8Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys2 sheets, scale 1:36,200https://doi.org/10.14509/245636200paper1988publication dateGilbert, W.G., 1988geologic mappingGilbert, W.G.Burns, L.E.Redman, E.C.Forbes, R.B.1987Preliminary bedrock geology and geochemistry of the Skagway B-3 Quadrangle, AlaskaReport of InvestigationRI 87-2Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys2 sheets, scale 1:36,200https://doi.org/10.14509/242636200paper1987publication dateGilbert, W.G. and others, 1987geologic mappingHendricks, 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 cartographyRedman, E.C.Retherford, R.M.Hickok, B.D.1984Geology and geochemistry of the Skagway B-2 Quadrangle, southeastern AlaskaReport of InvestigationRI 84-31Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys34 p., 4 sheets, scale 1:40,000https://doi.org/10.14509/239040000paper1984publication dateRedman, E.C. and others, 1984geologic mappingU.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 - Helicopter- and boat-supported teams from DGGS and the University of Alaska Fairbanks mapped the geology through field observations, interpretation of lidar and aerial imagery, and analysis of samples collected at more than 550 stations. Surficial mapping staff documented landform morphology and material characteristics, excavated and sampled soil test pits, measured structural features in rock outcrops, performed Schmidt Hammer tests, and collected rock samples for thin section, major oxide, and trace element analyses, as well as organic samples for radiocarbon dating. To address outstanding questions about the tectonic history of the region, bedrock mappers conducted targeted geologic and structural investigations in conjunction with new surficial mapping. Their work builds on the geologic mapping of Redman and others (1984), Gilbert and others (1987), and Gilbert (1988).Gilbert, W.G., 1988Gilbert, W.G. and others, 1987Redman, E.C. and others, 19842025GIS 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 Mercator80.999600-1350500000.0000000coordinate pair.00000001.00000001MetersNAD83GRS 806378137298.257222101haines_ak_gems_dbGeodatabase, layer files, style files, and fontsDGGShaines_ak_gems_dbhaines_gems_dbGeodatabase, layer files, style files, and fontsDGGShaines_gems_dbhaines_gems_geopackageSQLite Database fileDGGShaines_gems_geopackagehaines_gems_shapefileShapefiles and open data filesDGGShaines_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.PIR 2025-4The 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://doi.org/10.14509/31417Free download20251113Alaska 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"}