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TitleMagnetic insights into basement geology in the area of McArthur River uranium deposit, Athabasca Basin, Saskatchewan
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AuthorThomas, M D; McHardy, S
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. 425-440; 1 CD-ROM, https://doi.org/10.4095/223786 (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
NTS74H/15; 64L
AreaMcArthur River; Wollaston Lake
Lat/Long WENS-105.0000 -104.5000 58.0000 57.7500
Lat/Long WENS-104.0000 -102.0000 59.0000 58.0000
Subjectseconomic geology; geophysics; mineral exploration; exploration; uranium; uranium deposits; mineralization; unconformity-type deposit; unconformities; metamorphic rocks; gneisses; basins; sedimentary basins; structural features; faults; shear zones; basement geology; bedrock geology; Archean; geophysical surveys; magnetic interpretations; magnetic surveys; magnetic anomalies; magnetic susceptibility; geophysical interpretations; metamorphism; Athabasca Basin; Athabasca Group; Rae Province; Hearne Province; P2 fault zone; Precambrian; Proterozoic
Illustrationssketch maps; seismic profiles; tables; images
ProgramExploration Science and Technology (EXTECH IV) Initiative, 2000-2003, Athabasca Uranium Multi-disciplinary Study
ProgramNorthern Resources Development Program
ProgramSecure Canadian Energy Supply
Released2007 07 20
AbstractCalibration of magnetic features with gneissic basement units northeast of the Athabasca Basin, combined with extrapolation of geological-magnetic trends and drillhole information, is used to predict basement composition and structure beneath the basin in the McArthur River area, principally for a related gravity study. Magnetic lows are associated with pelitic-psammopelitic gneiss and lesser quartzite, intermediate levels with psammitic gneiss, and highs with granitoid units. Northeast-trending faults and contacts are interpreted mainly along steep magnetic gradients. Northwest-trending faults are inferred from narrow magnetic lows, and offsets or terminations of northeast-trending features. McArthur River uranium deposits lack characteristic magnetic signatures, although the P2 Main deposit lies along the southern margin of a moderate magnetic high. Uranium potential north to northeast of McArthur River is inferred to be greatest within magnetic lows of the Mudjatik Domain. These lows probably outline pelitic-psammopelitic paragneiss that locally contains graphitic conductors, which are prospective for unconformity-related uranium deposits.
GEOSCAN ID223786