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TitleBasement geology in the Alberta portion of the Athabasca Basin: context for the Maybelle River area
DownloadFree download (whole publication) (zip 291344 KB)
AuthorPana, D; Creaser, R A; Muehlenbachs, K; Wheatley, K
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. 135-153; 1 CD-ROM, https://doi.org/10.4095/223749
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
ProvinceAlberta
NTS74E/15; 74E/16; 74L; 74M/01; 74M/02; 74M/08
AreaLake Athabasca; Maybelle River
Lat/Long WENS-112.0000 -110.0000 59.5000 57.7500
Subjectsgeochemistry; geochronology; stratigraphy; structural geology; tectonics; uranium; sedimentation; alteration; unconformities; basement geology; bedrock geology; basins; sedimentary basins; basin analysis; basin formation; basin evolution; structural features; structural analysis; structural interpretations; faults; lithostratigraphy; Archean; deformation; metamorphism; granitic rocks; intrusive rocks; mylonites; uranium lead ratios; neodymium samarium dates; uranium lead dates; oxygen isotopes; isotopes; isotope ratios; tectonic evolution; tectonic interpretations; trace element geochemistry; Athabasca Basin; Athabasca Group; Rae Province; Taltson magmatic zone; Precambrian; Proterozoic
Illustrationssketch maps; tables; cross-sections; plots; graphs
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
AbstractBasement to the Athabasca Basin in northeastern Alberta comprises Early Proterozoic (ca. 1.97 Ga) plutons of the Taltson magmatic zone and remnants of its infrastructure, inferred Archean rocks of the Rae terrane. The northwest-trending Maybelle River high-strain zone affects these granitoid rocks over widths of several metres to tens of metres for at least 100 km. Four end-member types of granitoid rocks
range in texture from massive igneous, through ductile to brittle-ductile mylonite. In the Maybelle River area these have a 'continental arc' geochemical affinity. The U-Pb, Sm-Nd, and oxygen-isotope data suggest that partial melting of the local crust is the most likely magma source. Geochemical, isotopic, and structural data are consistent with the development of the Taltson magmatic zone within an intraplate orogen in a thermally weakened region of the Archean Rae crust, triggered by Early Proterozoic mantle downwelling.
GEOSCAN ID223749