Metadata for: Geological Survey of Canada, Bulletin 599 Identification_Information: Citation: Citation_Information: Originator: Gordey, S P Publication_Date: 2013 Title: Evolution of the Selwyn Basin region, Sheldon Lake and Tay River map areas, central Yukon Geospatial_Data_Presentation_Form: Document Series_Information: Series_Name: Geological Survey of Canada, Bulletin Issue_Identification: 599 Publication_Information: Publication_Place: Ottawa, Ontario, Canada Publisher: Natural Resources Canada, Earth Sciences Sector, Geological Survey of Canada Other_Citation_Details: Online_Linkage: (GEOSCAN Link) http://geoscan.nrcan.gc.ca/starweb/geoscan/ servlet.starweb?path=geoscan/fulle.web&search1=R=293034 Other_Citation_Details: Description: Abstract: Late Precambrian to Cretaceous, weakly metamorphosed strata of the ancestral North American margin comprise four sequences: Upper Precambrian to Middle Devonian (more than 3000 m) turbiditic sandstone, deep-water limestone, shale, and chert (Selwyn Basin), flanked southwesterly in the Siluro-Devonian by shallow-water carbonate and clastic sediments (McEvoy Platform). Early Cambrian pelite hosts deposits of stratiform lead-zinc. Upper Devonian and Mississippian turbiditic quartz-chert sandstone and chert-pebble conglomerate (2000 m) shed from elevated fault blocks of Selwyn Basin strata. Stratiform barite occurs within siliceous shale of mid- to Upper Devonian age. Mississippian to Triassic shale, chert, limestone, minor sandstone, and siltstone (1700 m) deposited on a shallow-marine shelf; and Lower Cretaceous clastic sediments (120+ m) derived from Jura-Cretaceous deformation and uplift. Regional Jura-Cretaceous deformation formed décollement style, northwest-trending folds and large, shallow-dipping thrust faults. Incompetent Cambro-Ordovician to Lower Devonian strata are complexly deformed above a regional flat-lying detachment. Deformation was accompanied by obduction of oceanic ultramafite, basalt, chert, and carbonate (Slide Mountain terrane) as well as siliceous mylonite and schist (Yukon-Tanana terrane). Granitic intrusions of the mid-Cretaceous (100 Ma) Selwyn Plutonic Suite crosscut regional structure and are responsible for small skarn and base-metal vein deposits. Coeval pyroclastic rocks of the South Fork volcanics are preserved within huge calderas. Cretaceous-Tertiary dextral slip along Tintina Fault has offset geological elements at least 430 km and formed pull-apart basins along and near the fault. Eocene fill of fluvial clastic and bimodal volcanic rocks host epithermal precious-metal veins. Supplemental_Information: English; anglais Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -134.0000 East_Bounding_Coordinate: -130.0000 North_Bounding_Coordinate: 63.0000 South_Bounding_Coordinate: 62.0000 Keywords: Theme: Theme_Keyword_Thesaurus: GEOSCAN Theme_Keyword: basins Theme_Keyword: basin evolution Theme_Keyword: sedimentary basins Theme_Keyword: bedrock geology Theme_Keyword: structural features Theme_Keyword: lithology Theme_Keyword: mineral occurrences Theme_Keyword: faults Theme_Keyword: faults, thrust Theme_Keyword: folds Theme_Keyword: lineations Theme_Keyword: structural features Theme_Keyword: stratigraphic analyses Theme_Keyword: stratigraphic correlations Theme_Keyword: igneous rocks Theme_Keyword: volcanic rocks Theme_Keyword: sedimentary rocks Theme_Keyword: sandstones Theme_Keyword: limestones Theme_Keyword: shales Theme_Keyword: cherts Theme_Keyword: siltstones Theme_Keyword: turbidite sedimentation Theme_Keyword: turbidites Theme_Keyword: conglomerates Theme_Keyword: clastics Theme_Keyword: deformation Theme_Keyword: granites Theme_Keyword: basalts Theme_Keyword: Selwyn Basin Theme_Keyword: McEvoy Platform Theme_Keyword: Slide Mountain Terrane Theme_Keyword: Yukon-Tanana Terrane Theme_Keyword: Selwyn Plutonic Suite Theme_Keyword: Jones Lake Formation Theme_Keyword: Mount Christie Formation Theme_Keyword: Tay Formation Theme_Keyword: Earn Group Theme_Keyword: Prevost Formation Theme_Keyword: Portrait Lake Formation Theme_Keyword: Road River Group Theme_Keyword: Rabbitkettle Formation Theme_Keyword: Gull Lake Formation Theme_Keyword: Hyland Group Theme_Keyword: Yusezyu Formation Theme_Keyword: stratigraphy Theme_Keyword: structural geology Theme_Keyword: metallic minerals Theme_Keyword: sedimentology Theme_Keyword: Mesozoic Theme_Keyword: Paleozoic Theme_Keyword: Cretaceous Theme_Keyword: Triassic Theme_Keyword: Permian Theme_Keyword: Carboniferous Theme_Keyword: Mississippian Theme_Keyword: Pennsylvanian Theme_Keyword: Devonian Theme_Keyword: Ordovician Theme_Keyword: Silurian Theme_Keyword: Cambrian Theme_Keyword: Proterozoic Theme_Keyword: Precambrian Place: Place_Keyword_Thesaurus: None Place_Keyword: Selwyn Basin Place_Keyword: Sheldon Lake Place_Keyword: Tay River Place_Keyword: Pelly River Place_Keyword: Prevost River Place_Keyword: Jackfish Lake Place_Keyword: Ross River Place_Keyword: South MacMillan River Place_Keyword: Yukon Access_Constraints: None Use_Constraints: Her Majesty the Queen in Right of Canada. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Natural Resources Canada, Earth Sciences Sector, Mapping Information Branch Contact_position: Copyright Information Officer Contact_Address: Address_Type: Mailing and Physical Address: 615 Booth Street Address: Room 622c Address_City: Ottawa Address_State_or_Province: Ontario Address_Postal_Code: K1A 0E9 Address_Country: Canada Contact_Voice_Telephone: +01-613-947-6275 Contact_Facsimile_Telephone: +01-613-947-2410 Contact_Electronic_Mail_Address: ESSCopyright@NRCan.gc.ca Distribution_Information: Distributor: Standard_Order_Process: Non-digital_Form: Fees: Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: pdf Format_Version_Number: 11.0.4 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://geoscan.ess.nrcan.gc.ca Fees: Free Metadata_Reference_Information: Metadata_Date: 2013-10-03 Metadata_Future_Review_Date: Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Natural Resources Canada Contact Position: Metadata Coordinator Contact_Address: Address_Type: Mailing and Physical Address: 580 Booth Street Address: 2 - B4 - 4 Address_City: Ottawa Address_State_or_Province: Ontario Address_Postal_Code: K1A 0E4 Address_Country: Canada Contact_Voice_Telephone: +01-613-996-9502 Contact_Facsimile_Telephone: +01-613-943-1549 Contact_Electronic_Mail_Address: geoscan@nrcan.gc.ca