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TitleDepositional age of the Douglas Formation, northern Saskatchewan, determined by Re-Os geochronology
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AuthorCreaser, R A; Stasiuk, L D
SourceEXTECH IV: Geology and Uranium EXploration TECHnology of the Proterozoic Athabasca Basin, Saskatchewan and Alberta; by Jefferson, C W (ed.); Delaney, G (ed.); Geological Survey of Canada, Bulletin no. 588, 2007 p. 341-346; 1 CD-ROM, https://doi.org/10.4095/223779 (Open Access)
Year2007
Alt SeriesSaskatchewan Geological Society Special Publication 18
Alt SeriesGeological Association of Canada, Mineral Deposits Division, Special Publication 4
PublisherNatural Resources Canada
Documentserial
Lang.English
Mediapaper; CD-ROM; on-line; digital
RelatedThis publication is contained in Jefferson, C W; Delaney, G; (2007). EXTECH IV: Geology and Uranium EXploration TECHnology of the Proterozoic Athabasca Basin, Saskatchewan and Alberta, Geological Survey of Canada, Bulletin no. 588
RelatedThis publication is contained in Jefferson, C W; Delaney, G; (2007). EXTECH IV: Geology and Uranium EXploration TECHnology of the Proterozoic Athabasca Basin, Saskatchewan and Alberta, Geological Survey of Canada, Bulletin no. 588
File formatpdf
ProvinceSaskatchewan
NTS74K/06
AreaCluff Lake
Lat/Long WENS-109.5000 -109.0000 58.5000 58.2500
Subjectsgeochronology; stratigraphy; uranium; unconformities; sedimentation; sedimentary rocks; sedimentary basins; lithostratigraphy; radiometric dating; radiometric dates; Athabasca Basin; Rae Province; Hearne Province; Douglas Formation; rhenium-osmium dates; Precambrian; Proterozoic
Illustrationssketch maps; tables; plots
ProgramAthabasca Uranium Multi-disciplinary Study, Exploration Science and Technology (EXTECH IV) Initiative, 2000-2003
ProgramNorthern Resources Development Program
ProgramSecure Canadian Energy Supply
Released2007 07 20
AbstractRhenium-osmium geochronology of organic-rich shale of the Douglas Formation, northern Saskatchewan, yields a precise date of 1541 ± 13 Ma (2? uncertainty, Model 1 isochron), which is interpreted to be the depositional age of the samples. This result provides a robust determination for deposition of some of the youngest sedimentary rocks within the Athabasca Basin, and extends the confirmed duration
of sedimentation by about 100 million years. The Re-Os date for the Douglas Formation (sequence 4) suggests that a substantive hiatus is recorded at the unconformity between rocks of sequence 3 and sequence 4. The Re-Os age is also similar to the oldest published ages of uranium mineralization within the deeper basin, suggesting that the onset of mineralization was broadly contemporaneous with deposition of the youngest sediments in the Athabasca Basin.
GEOSCAN ID223779