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TitleSequence stratigraphy in the western Athabasca Basin of Saskatchewan and Alberta
DownloadFree download (whole publication) (zip 291344 KB)
AuthorCollier, B
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. 281-299; 1 CD-ROM, https://doi.org/10.4095/223773
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; Saskatchewan
NTS74K/03; 74K/04; 74K/05; 74K/06; 74L/01; 74L/02; 74L/07; 74L/08
AreaMaybelle River; Shea Creek; Cluff Lake
Lat/Long WENS-111.0000 -109.0000 58.5000 58.0000
Subjectsstratigraphy; structural geology; sedimentology; tectonics; uranium; mineralization; unconformities; sedimentation; sedimentary rocks; sandstones; conglomerates; mudstones; basins; sedimentary basins; basin analysis; basin formation; basin evolution; structural features; faults; basement geology; bedrock geology; lithostratigraphy; Archean; depositional environment; systematic stratigraphy; stratigraphic analyses; sedimentary facies; lithofacies; Athabasca Basin; Fair Point sequence; Shea Creek sequence; Lower Manitou Falls sequence; Upper Manitou Falls sequence; Lower Wolverine Point sequence; Upper Wolverine Point sequence; Locker Lake - Otherside sequence; Precambrian; Proterozoic
Illustrationssketch maps; tables; stratigraphic charts
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
AbstractSeven, third-order, mainly fluvial sandstone sequences are interpretedwithin the approximately 1740 - 1640 Ma Athabasca Group in ascending order: Fair Point, Shea Creek, lower Manitou Falls, upper Manitou Falls, lower Wolverine Point, upper Wolverine Point, and Locker Lake - Otherside. Some sequence boundaries unconformably underlie thin, erosive basal-lag conglomerate and pebbly beds. Conformable sequence boundaries are interpreted at the bases of widespread, approximately 100 - 300 m, upward-fining rhythms that lack pebbles. Although sedimentary patterns are linked directly to regional faults, continuous sequence thicknesses across them suggest that intrabasinal subsidence created most of the accommodation space in two successive basins. The Jackfish Subbasin received clay-rich, coarse-grained pebbly sandstone of the Fair Point sequence. The overlying, larger William River Subbasin received finer grained and clay-poor sandy sequences. Significant erosional unconformity and local paleosoils topping the Fair Point sequence separate the geometrically different Jackfish and William River subbasins, indicating that this unconformity is a second-order sequence boundary.
GEOSCAN ID223773