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TitleRegional seismic signature of the basement and crust beneath the McArthur River mine district, Athabasca Basin, Saskatchewan
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AuthorCard, C D; Hajnal, Z; Takács, E; White, D J; Györfi, I; Powell, B; Koch, R
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. 389-396; 1 CD-ROM, https://doi.org/10.4095/223783
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
NTS74H/15
AreaMcArthur River
Lat/Long WENS-105.0000 -104.5000 58.0000 57.7500
Subjectseconomic geology; geophysics; mineral exploration; exploration; uranium; uranium deposits; mineralization; unconformity-type deposit; unconformities; sedimentary rocks; sandstones; conglomerates; mudstones; basins; sedimentary basins; structural features; faults; shear zones; basement geology; bedrock geology; Archean; geophysical surveys; seismic surveys; seismic interpretations; seismic profiles; seismic reflection surveys; seismic exploration; seismic velocities; metamorphism; Athabasca Basin; Athabasca Group; Rae Province; Hearne Province; Precambrian; Proterozoic
Illustrationstables
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
AbstractSeismic-reflection profile results of the EXTECH IV project reveal exceptionally high-quality images from surface to Moho depth. First-break analysis defined the spatial velocity field, outlined geochemical alteration in the Athabasca Group, delineated much of the basal unconformity, and indicated the location of fault zones postdating the Athabasca Group. Variations in depth and changes in structural setting of the Athabasca Basin - basement unconformity are imaged seismically. Seismic-reflection images reveal structural configurations and stratigraphic properties of the P2 fault zone and the associated basement rocks to a depth of about 7000 m and along a lateral profile of 10 km. A bright band of reflectivity at about 8000 m depth, is attributed to 1270 Ma Mackenzie sills. Seismic-reflection signatures outline remnants of a major crustal reactivated shear zone with associated retrogrademetamorphism in themiddle to lower crustal depths. A relatively shallow (~35 km) Moho appears to be young, tectonically generated, and with well defined structural disturbances.
GEOSCAN ID223783