Geologic map of the Big Delta B-1 Quadrangle, east-central Alaska

Day, W.C.O'Neill, J.M.Aleinikoff, J.N.Green, G.N.Saltus, R.W.Gough, L.P.2007Geologic map of the Big Delta B-1 Quadrangle, east-central AlaskageodatabaseScientific Investigations MapSIM 2975United StatesU.S. Geological Survey1 sheet, scale 1:63,360https://dggs.alaska.gov/pubs/id/23531Scientific Investigations Map 2975, Geologic map of the Big Delta B-1 Quadrangle, east-central Alaska, provides detailed (1:63,360-scale) geologic mapping of the U.S. Geological Survey (USGS) Big Delta B-1 quadrangle. 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 geodatabase and ESRI fonts and style files are available from the DGGS website: https://dggs.alaska.gov/pubs/id/23531.The work is intended to facilitate multi-map merging of adjacent work by USGS and DGGS staff.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/10.14509/305842007ground conditioncompleteNone planned-144.522590-143.97265764.50932964.240612ISO 19115 Topic CategorygeoscientificInformationAlaska Division of Geological & Geophysical SurveysAlluvialAmphiboliteBasaltBatholithBedrockColluviumContactDioriteDomeFanFaultingFracturingGeochronologyGeologicGeologyGlacialGneissGoldGraniteGranodioriteGravelGraywackeIgneousLandslideMetamorphicMetamorphismMigmatiteMineralsMonaziteOrthogneissOutwashPegmatitePlutonicPorphyryQuartziteRhyoliteRocksSandstoneSchistSedimentSedimentarySolifluctionSurfaceSurficialTerraceAlaska Division of Geological & Geophysical SurveysAntimony CreekBlack MountainBoulder CreekCentral CreekDivide CreekGoodpaster Mining DistrictGoodpaster RiverGranite CreekGrizzly Bear MineJohnson CreekKing CreekLast Chance CreekSerpentine CreekSlate CreekSummit CreekTibbs CreekWolverine CreekWalker, J.D., Geissman, J.W., Bowring, S.A, and Babcock, L.E., comp., 2012, Geologic Time Scale v. 4.0: Geological Society of AmericaEoceneHoloceneLate CretaceousLate DevonianMiddle DevonianPaleocenePleistoceneTertiaryThis 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

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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 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.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 product produced by the USGS. We encourage users to review the originating USGS release for a print formatted map and documentation of the originating work.Certainty in feature boundaries or location varies throughout the map. To record the originating authors' degree of confidence in the location of features, the GeMS and AK GeMS schemas include fields within each feature class and accompanying orientation and location confidence lookup tables. This data release provides legacy geospatial data converted to the GeMS and AK GeMS specifications, and in most cases, the location accuracy was not quantified by the originating authors. When location accuracy values are unavailable, users must infer positional accuracy based on standard geologic mapping practices of the investigation era.Day, W.C.O'Neill, J.M.Aleinikoff, J.N.Green, G.N.Saltus, R.W.Gough, L.P.2007Geologic map of the Big Delta B-1 Quadrangle, east-central AlaskaScientific Investigations MapSIM 2975United StatesU.S. Geological Survey1 sheet, scale 1:63,360https://dggs.alaska.gov/pubs/id/2353163360paper2007publication dateDay, W.C. and others, 2007GIS analysis and digital cartographyEkberg, 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 cartographyGIS 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 converted by a geologist and 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.Day, W.C. and others, 2007Ekberg, P.G. and others, 2021Hendricks, M.D. and others, 2021U.S. Geological Survey National Cooperative Geologic Mapping Program, 20202021vectorUniversal Transverse Mercator60.999600-1470500000.0000000coordinate pair.00000001.00000001MetersNAD27Clarke 18666378206.40000000037294.978698199999997big_delta_b1_ak_gems_db_pkgGeodatabase, layer files, style files, and fontsAlaska Division of Geological & Geophysical Surveysbig_delta_b1_ak_gems_db_pkgbig_delta_b1_gems_db_pkgGeodatabase, layer files, style files, and fontsAlaska Division of Geological & Geophysical Surveysbig_delta_b1_gems_db_pkgbig_delta_b1_gems_shapefile_pkgShapefiles and open data filesAlaska Division of Geological & Geophysical Surveysbig_delta_b1_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 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