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TitleTopographic influences on the sedimentology of the Read and Manitou Falls formations, eastern Athabasca Basin, Saskatchewan
DownloadFree download (whole publication) (zip 291344 KB)
AuthorLong, D G F
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. 267-280; 1 CD-ROM, https://doi.org/10.4095/223771
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
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
ProvinceSaskatchewan
NTS64E/13; 64L/03; 64L/04; 64L/05; 64L/06; 64L/12; 64L/13; 74F/07; 74F/08; 74F/09; 74F/10; 74F/11; 74F/12; 74F/13; 74F/14; 74F/15; 74F/16; 74G; 74H/04; 74H/05; 74H/06; 74H/07; 74H/09; 74H/10; 74H/11; 74H/12; 74H/13; 74H/14; 74H/15; 74H/16; 74I; 74J; 74K; 74M/01; 74M/02; 74M/08; 74N/01; 74N/02; 74N/03; 74N/04; 74N/05; 74N/06; 74N/07; 74N/08; 74N/11; 74N/12; 74O/01; 74O/02; 74O/03; 74O/04; 74O/05; 74O/06; 74O/07; 74O/08; 74P/01; 74P/02; 74P/03; 74P/04; 74P/05; 74P/06; 74P/07
AreaLake Athabasca; McClean Lake; McArthur River; Cigar Lake; Shea Creek
Lat/Long WENS-110.0000 -103.0000 59.7500 57.0000
Subjectsstratigraphy; structural geology; sedimentology; uranium; unconformities; paleotopography; sedimentation; depositional environment; sedimentary rocks; sandstones; conglomerates; mudstones; basins; sedimentary basins; basin analysis; basin formation; basin evolution; basement geology; bedrock geology; lithostratigraphy; Archean; stratigraphic correlations; paleocurrents; paleocurrent analyses; sedimentary facies; Athabasca Basin; Athabasca Group; Read Formation; Manitou Falls Formation; Dunlop Member; Precambrian; Proterozoic
Illustrationssketch maps; cross-sections; stratigraphic sections
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
AbstractIn the eastern Athabasca Basin, Read and Manitou Falls formations unconformably overlie high-grade Wollaston and Mudjatik gneiss domains. Stratal architecture and paleocurrents of basal strata at the SueCpit at McClean Lake and the Deilmann pit at Key Lake indicate that initial deposition was strongly influenced by basement paleotopography, with early deposits confined between distinct valley walls.
Stratigraphically younger units experienced less direct basement influence on river patterns. They are likely to have formed by deposition on amalgamated braidplains, essentially at or near grade, filling a broad, nearly flat accommodation space. Drill logs at McArthur River and Cigar Lake suggest that paleotopography there also influenced the basal lithofacies, as cobble and large pebble conglomerate accumulated in rivers that ran parallel to basin-margin faults. Some uranium ore bodies occupy low-relief, mature topographic depressions along pre-existing fault trends; others overlie basement ridges. Systematic paleocurrent measurements in inclined exploratory cores may aid selection of exploration targets, especially where paleocurrents deviate from regional trends.
GEOSCAN ID223771