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TitleUnconformity-associated uranium deposits of the Athabasca Basin, Saskatchewan and Alberta
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AuthorJefferson, C W; Thomas, D J; Gandhi, S S; Ramaekers, P; Delaney, G; Brisbin, D; Cutts, C; Portella, P; Olson, R A
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. 23-67; 1 CD-ROM, https://doi.org/10.4095/223744 (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; digital; on-line
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
ProvinceAlberta; Saskatchewan
NTS64E/13; 64L/03; 64L/04; 64L/05; 64L/06; 64L/12; 64L/13; 74E/15; 74E/16; 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; 74L; 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; Cree River; Cree Lake; Fond du lac; Stony Rapids; Fort Chipewyan; Richardson River; Wollaston Lake
Lat/Long WENS-112.0000 -103.0000 59.7500 57.0000
Subjectseconomic geology; stratigraphy; structural geology; geochemistry; mineral exploration; exploration; uranium; uranium deposits; nickel; cobalt; lead; arsenic; gold; platinum; copper; iron; uraninite; alteration; exploration methods; unconformity-type deposit; unconformities; sedimentary rocks; sandstones; conglomerates; mudstones; regoliths; metamorphic rocks; gneisses; basement geology; bedrock geology; basins; sedimentary basins; basin analysis; structural features; structural analysis; structural interpretations; faults; veins; shear zones; lithostratigraphy; mineral zoning; Athabasca Basin; Athabasca Group; Manitou Falls Formation; Warnes Member; Wathaman Batholith; Mudjatik Domain; Wollaston Domain; Peter Lake Domain; Precambrian; Proterozoic
Illustrationssketch maps; tables; cross-sections; 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
AbstractThis paper reviews the geology, geophysics, and origin of the unconformity-associated uranium deposit type, focused on the Athabasca Basin. Pods, veins, and semimassive replacements of uraninite (variety pitchblende) are located close to unconformities between late Paleo- to Mesoproterozoic conglomeratic sandstone basins and metamorphosed basement rocks. The thin, overall flat-lying, and apparently unmetamorphosed, but pervasively altered, mainly fluvial strata include red to pale tan quartzose conglomerate, sandstone, and mudstone. Beneath the basal unconformity, red hematitic and bleached clay-altered regolith grades down through chloritic altered to fresh basement gneiss. The highly metamorphosed interleaved Archean to Paleoproterozoic granitoid and supracrustal basement gneiss includes graphitic metapelitic that preferentially hosts reactivated shear zones and many deposits. A broad variety of deposit shapes, sizes, and compositions ranges from monometallic and generally basement-hosted veins to polymetallic lenses located just above or straddling the unconformity, with variable Ni, Co, As, and Pb and traces of Au, Pt, Cu, REEs, and Fe.
GEOSCAN ID223744