{"action":"create","ckan_id":null,"date_created":"Sat, 14 Feb 2026 20:30:06 GMT","date_finished":null,"harvest_job_id":"e0f41b31-a68d-43ff-8093-27a46dae0336","harvest_source_id":"31f41541-38a0-400b-b240-10ebcb0acd9a","id":"10082d4c-16c0-4ada-9635-ec0e0da36fdd","identifier":"https://dggs.alaska.gov/webpubs/metadata/MP172.xml","parent_identifier":null,"source_hash":"625962e9116a485af84342f41d221d7d2426d47e2f8c2bacec5052fc3aebc2f2","source_raw":"Lessard, R.R.Wildland, A.D.Montayne, Simone2022Bedrock geologic map database of the Caribou Creek area, Big Delta C-4 and D-4 quadrangles, east-central AlaskageodatabaseMiscellaneous PublicationMP 172Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Survey2 p.https://doi.org/10.14509/30866Miscellaneous Publication 172, Bedrock geologic map database of the Caribou Creek area, Big Delta C-4 and D-4 quadrangles, east-central Alaska, presents 1:25,000 scale geologic mapping of the Caribou Creek area in the Big Delta C-4 Quadrangle, east-central Alaska. The Caribou Creek area is known for significant placer gold but no known lode gold source. Additionally, it is one of the few regions in interior Alaska where native bismuth has been reported in placers. During an 11-week field campaign in the summer of 2002, an area of approximately 200 km2 was mapped at a 1:25,000 scale to delineate the area's geologic rock units, identify structural elements and their relative orientation, and collect rock samples for the geochemical and geochronological analysis needed to develop a model for the geological evolution of the area and potential source of the area's abundant placer gold. The resultant bedrock geologic map was published as a component of a University of Alaska master's thesis (Lessard, 2006). This publication release provides a modern compilation of the thesis map's GIS data. The dataset contains geologic, structural, stratigraphic, and geochronologic data organized according to the GeMS and AK GeMS mapping schemas. The geodatabase and ESRI fonts and style files are available from the DGGS website: https://doi.org/10.14509/30866.The work is intended to facilitate multi-map merging of adjacent geologic maps throughout Alaska.This geodatabase is organized according to the AK GeMS mapping schema Hendricks, M.D., Ekberg, P.G., Athey, J.E., Wyatt, W.C., Willingham, A.L., and Naibert, T.J., 2021, AK GeMS data dictionary: A description of the Alaska geologic mapping schema: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication 170, 10 p. https://doi.org/10.14509/30669. 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/10.14509/305842014ground conditioncompleteNone planned-145.811257-145.49310164.77669864.646769ISO 19115 Topic CategorygeoscientificInformationAlaska Division of Geological & Geophysical SurveysAmphiboliteDioriteGeMSGeMS NCGMP09GraniteGranodioriteGreenschistGreenstoneIgneousMarbleMetamorphicOrthogneissPlutonicPlutonsQuartzQuartziteRocksSchistSedimentaryTourmalineVolcanicAlaska Division of Geological & Geophysical SurveysBonanza CreekBullfrog CreekButte CreekCaribou CreekFairbanks Mining DistrictNo Grub CreekPasco CreekSalcha RiverWalker, J.D., Geissman, J.W., Bowring, S.A, and Babcock, L.E., comp., 2012, Geologic Time Scale v. 4.0: Geological Society of AmericaCretaceousDevonianJurassicMesozoicMississippianPaleozoicQuaternaryThis 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 U.S. Geological Surveys' (USGS) EDMAP program provided funding for the geologic mapping with matching funds from the University of Alaska and DGGS. Geologic map conversion to the GeMS standard was funded by the USGS National Cooperative Geologic Mapping Program under StateMap award number G20AC00367, 2020, 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. Kate Hendry, from Cambridge University, UK, provided excellent and essential field assistance. Thoughtful review and discussion with University of Alaska Fairbanks and DGGS thesis advisory committee members Mary Keskinen, Paul Layer, Melanie Werdon, Rainer Newberry, and Michael Whalen supported insight into the geologic complexities of the map area and grealy enhanced the quality of this work.This data release provides legacy geospatial data converted to the GeMS and AK GeMS specifications. Attribute fields within each feature class are populated using 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 specifications of the AK GeMS geologic mapping schema.This data release provides converted digital geospatial data for a map developed to fulfill the University of Alaska Master's Degree requirements. We encourage users to review the original thesis for a print-formatted map and documentation of the original work.This data release provides legacy geospatial data converted to the GeMS and AK GeMS specifications. To record the originating authors' degree of confidence in the location of features, the data include descriptive fields within each feature class and accompanying orientation and location confidence lookup tables. When location accuracy values are unavailable, users must infer positional accuracy based on standard geologic mapping practices of the investigation era. Certainty in feature boundaries or location varies throughout the map.Burns, L.E.Barefoot, J.D.Graham, G.R.C.Naibert, T.J.Geoterrex-DighemStevens Exploration Management Corp.2019Salcha River-Pogo electromagnetic, magnetic, and radiometric airborne geophysical survey data compilationGeophysical ReportGPR 2019-8Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys22 phttps://doi.org/10.14509/30179paper2019publication dateBurns, L.E. and others, 2019Geologic mappingEkberg, 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 cartographyLessard, R.R.2006Geology of the Caribou Creek area, Big Delta Quadrangle, east-central AlaskaFairbanks, AlaskaUniversity of Alaska Fairbankshttps://scholarworks.alaska.edu/handle/11122/6918paper2006publication dateLessard, R.R., 2006Geologic map compilationU.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 - During an 11-week field campaign in the summer of 2002, the researcher mapped an area of approximately 400 km2. Mapping included foot traverses, ATV traverses, and helicopter transfers to record over 780 geologic stations and collect approximately 750 rock samples. Bedrock exposure and rubble outcrops were most common at higher elevations and in the northeast portion of the field area. Exposure was sparse due to heavy vegetation at lower elevations and to the southwest. Occasionally it was necessary to excavate under trees and into the hillsides to find rock. Map units, contacts, and faults were mapped in the field based on rock identification and geophysical survey maps. Samples were cut and reexamined to better classify the rocks and their minerals. In some cases, rock types and contacts were determined using the analytical techniques described in the accompanying thesis. Field stations were located using handheld Garmin GPS units.Burns, L.E. and others, 20192002Geologic map compilation - The conceptual framework for the regional geology incorporates key ideas from preexisting literature. A comprehensive bibliographic reference list of prior work used to identify and delineate rock units and structural elements is provided in the accompanying report. The map and report received technical review and editing by several scientists familiar with the subject matter. The authors incorporated the reviewers' suggestions into the final draft. The map was published as a component of a University of Alaska master's thesis.Lessard, R.R., 20062006GIS 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 then 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, 20202022vectorUniversal Transverse Mercator60.999600-1470500000.0000000coordinate pair.00000001.00000001MetersNAD27Clarke 18666378206.40000000037294.978698199999997caribou_creek_ak_gems_db_pkgGeodatabase, layer files, style files, and fontsDGGS and UAFcaribou_creek_ak_gems_db_pkgcaribou_creek_gems_db_pkgGeodatabase, layer files, style files, and fontsDGGS and UAFcaribou_creek_gems_db_pkgcaribou_creek_gems_shapefile_pkgShapefiles and open data filesDGGS and UAFcaribou_creek_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.MP 172The 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 pricinggeodatabasehttps://doi.org/10.14509/30866Free download20220520Alaska 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"}