{"action":"create","ckan_id":null,"date_created":"Sat, 28 Mar 2026 21:07:30 GMT","date_finished":null,"harvest_job_id":"c87df6d4-55a4-4157-8f97-1f84fe294e8c","harvest_source_id":"31f41541-38a0-400b-b240-10ebcb0acd9a","id":"ed31b4d8-7155-47b9-bcb6-5750387ca9b8","identifier":"https://dggs.alaska.gov/webpubs/metadata/PIR2024-4.xml","parent_identifier":null,"source_hash":"72acbf3d7a324911b74999549fc0215acf85c1abe1cc0179bd644d10d195d3b3","source_raw":"Bull, K.F.Stevens, D.S.P.Gillis, R.J.Wolken, G.J.Balazs, M.S.2024Geology and geologic hazards in the Whittier area, Southcentral AlaskageodatabasePreliminary Interpretive ReportPIR 2024-4Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys21 p., 1 sheet, scale 1:50,000https://doi.org/10.14509/31426Geology and geologic hazards in the Whittier area, Southcentral Alaska, Preliminary Interpretive Report 2024-10, presents mapping of surficial and bedrock geology and a general assessment of natural hazards near Whittier, Alaska. The city of Whittier, Alaska (pop. ~250), is one of only two all-weather, ice-free ports that serve the Alaska mainland via both railroad and road access. The city lies about 100 km by road southeast of Anchorage near the head of Passage Canal, a deep fjord in western Prince William Sound. The hazards assessment is in support of informed community planning, mitigation, and emergency response in and around this high-risk community and its associated critical infrastructure. Fieldwork during the mapping portion of this study was conducted during eight days on the ground in 2012. Additional time was spent over two field seasons assessing specific features related to potential hazards. Outcrops were accessed by helicopter, road, and trail. Samples were collected for petrology, geochronology, and thermochronology analyses. Bedrock geology is modified from Nelson and others (1985). Surficial geology was mapped principally by the interpretation of 1:63,360-scale, false-color, infrared stereo aerial photographs taken in 1978 and refined using airborne lidar data collected in 2012. Recent satellite imagery from the Geographic Information Network of Alaska (GINA) was also utilized. Air-photo interpretations were verified by ground observations during field work in 2012. The complete report, geodatabase, and ESRI fonts and style files are available from the Alaska Division of Geological & Geophysical Surveys website: http://doi.org/10.14509/31426.The city of Whittier, Alaska (pop. ~250), is one of only two all-weather, ice-free ports that serve the Alaska mainland via both railroad and road access. The city lies about 100 km by road southeast of Anchorage near the head of Passage Canal, a deep fjord in western Prince William Sound. The hazards assessment is in support of informed community planning, mitigation, and emergency response in and around this high-risk community and its associated critical infrastructure.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/10.14509/3058420122024ground conditionCompleteNone planned-148.837856-148.45253760.87301260.789988ISO 19115 Topic CategorygeoscientificInformationAlaska Division of Geological & Geophysical SurveysAlluvialAlluvial DepositsAlluviumBedrockChannelChloriteClayContactDGGSDeltaic FaciesDioriteExhumationFanFan DeltaFeldsparFluvialFlyschGabbroGeMS DB L3 CompliantGeMS DB v2GeochronologyGeologicGeologic MapGeologyGlacialGlacial DepositsGlaciationGlaciersGraniteGravelGreenschistHornblendeHornfelsIceIntrusiveLacustrineLacustrine SedimentationLakesLandslide DepositLaumontiteLiquefactionMarine SedimentationMeltwaterMetamorphicMetamorphic RocksMetasedimentary RocksMicaMineralogyMineralsMorainesMuscoviteOutwashOutwash FanPebblePlagioclasePlutonicPlutonsPyrrhotiteQuartzRocksSandSandstoneSedimentShaleShearSiltSiltstoneStrainSubductionSurfaceSurficialTalusTillVolcanicZirconAlaska Division of Geological & Geophysical SurveysAlaskaBillings CreekBlackstone BayBur PointCochrane BayCove CreekDecision PointDivide LakeEmerald BayEmerald IslandGradual PointHollow BightLearnard GlacierLogging Camp BayLowell GlacierMaynard MountainNeptune PointPassage CanalPlacer CreekPoe BayPort WellsPortage CreekPortage LakePortage MinePortage PassSeth GlacierShotgun CoveSquirrel CoveSquirrel PointStrong PointTrinity PointWhittierWhittier CreekAlaska Division of Geological & Geophysical SurveysValdez GroupWalker, J.D., Geissman, J.W., Bowring, S.A, and Babcock, L.E., comp., 2012, Geologic Time Scale v. 4.0: Geological Society of AmericaCretaceousHoloceneTertiaryThis 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.Geologic field investigations by M.S. Balazs, K.F. Bull, R.J. Gillis, D.S.P. Stevens, and G.J. Wolken (2012); geologic interpretation by: M.S. Balazs, K.F. Bull, R.J. Gillis, D.S.P. Stevens, and G.J. Wolken (2012); airphoto interpretation by: M.S. Balazs, K.F. Bull, R.J. Gillis, D.S.P. Stevens, and G.J. Wolken (2012); geologic GIS data layers created by: K.F. Bull, D.S.P. Stevens (2012); cartography by: A.E. Macpherson (2024); cartographic Review by: M.D. Hendricks (2024); and peer-reviewed by: M.C. Larsen (2024). We thank Pathfinder Aviation for exceptional work in difficult circumstances, and the people of Whittier for their kindness and generosity. We greatly appreciate the Chugach Alaska Native Corporation and the U.S. Forest Service for their helpfulness and access to their lands during this study. Gordon Burton was of great help in allowing us access to the Whittier tunnel, which we were, unfortunately, unable to utilize. This work was funded in part by the 2012 U.S. Geological Survey National Cooperative Geologic Mapping Program, award number G12AS00007. 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.Freeman, L.K.Montayne, SimoneWypych, Alicja2017Major-oxide and trace-element geochemical data from rocks collected near Panorama Mountain, Mile 104 Seward Highway, Crow Pass, and Whittier, AlaskaRaw Data FileRDF 2017-12Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys4 phttps://doi.org/10.14509/29725Hubbard, T.D.Wolken, G.J.Stevens, D.S.P.Combellick, R.A.2013High-resolution lidar data for the Whittier area, Passage Canal, and Portage Lake, AlaskaRaw Data FileRDF 2013-3Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys5 phttps://doi.org/10.14509/24976Nicolsky, D.J.Suleimani, E.N.Combellick, R.A.Hansen, R.A.2011Tsunami inundation maps of Whittier and western Passage Canal, AlaskaReport of InvestigationRI 2011-7Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys65 p., 4 sheets, scale 1:14,000https://doi.org/10.14509/23244Nicolsky, D.J.Wolken, G.J.Combellick, R.A.Hansen, E.2011APPENDIX B: Potential rockfall-generated tsunami at Whittier, AlaskaReport of InvestigationRI 2011-7AFairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveysp. 57-65https://doi.org/10.14509/23283Nicolsky, D.J.Suleimani, E.N.2018Potential maximum permanent flooding, Whittier, AlaskaReport of InvestigationRI 2011-7BFairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys1 sheet, scale 1:6,500https://doi.org/10.14509/30110Wolken, G.J.Balazs, M.S.2014Inventory and preliminary assessment of geologic hazards in the Passage Canal-Portage Valley area, south-central AlaskaPreliminary Interpretive ReportPIR 2014-1Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys15 phttps://doi.org/10.14509/27302Attribute 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.Hendricks, M.D.Macpherson, A.E.Athey, J.E.Wyatt, W.C.Montayne, SimoneBuchanan, WesRivera, P.G.Steinleitner, A.M.2024AK GeMS data dictionary: A description of the Alaska geologic mapping schemaMiscellaneous PublicationMP 170 v. 2Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys13 phttps://doi.org/10.14509/31172paper2024publication dateHendricks, M.D. and others, 2024GIS analysis and digital cartographyMacpherson, A.E.Hendricks, M.D.Athey, J.E.2024AK GeMS Symbology: A description of the AK GeMS Style FileMiscellaneous PublicationMP 169 v. 2Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys6 phttps://doi.org/10.14509/31101paper2024publication dateMacpherson, A.E. and others, 2024GIS 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 - Fieldwork during the mapping portion of this study was conducted over eight days on the ground in 2012. Additional time was spent over two field seasons assessing specific features related to potential hazards. Outcrops were accessed by helicopter, road, and trail. Samples were collected for petrology, geochronology, and thermochronology analyses. Bedrock geology is modified from Nelson and others (1985). Surficial geology was mapped principally by interpreting 1:63,360-scale, false-color, infrared stereo aerial photographs taken in 1978 and refined using airborne lidar data collected in 2012. Recent satellite imagery from the Geographic Information Network of Alaska (GINA) was also utilized. Air-photo interpretations were verified by ground observations during fieldwork in 2012.2024GIS 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 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.Hendricks, M.D. and others, 2024Macpherson, A.E. and others, 2024U.S. Geological Survey National Cooperative Geologic Mapping Program, 20202024vectorUniversal Transverse Mercator60.999600-1470500000.0000000coordinate pair.00000001.00000001MetersNAD83GRS 806378137298.257222101whitttier_ak_gems_dbGeodatabase, layer files, style files, and fontsDGGSwhitttier_ak_gems_dbwhitttier_gems_dbGeodatabase, layer files, style files, and fontsDGGSwhitttier_gems_dbwhitttier_gems_shapefileShapefiles and open data filesDGGSwhitttier_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 2024-4The 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/10.14509/31426Free download20241119Alaska 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"}