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TitleOrigin of organic matter in the Proterozoic Athabasca Basin of Saskatchewan and Alberta, and significance to unconformity uranium deposits
DownloadDownload (whole publication)
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorWilson, N S F; Stasiuk, L D; Fowler, M G
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. 325-339; 1 CD-ROM, Open Access logo Open Access
Alt SeriesSaskatchewan Geological Society Special Publication 18
Alt SeriesGeological Association of Canada, Mineral Deposits Division, Special Publication 4
PublisherNatural Resources Canada
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
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; McClean Lake; Key Lake; Maybelle River; McArthur River; Shea Creek; Cigar Lake; Cluff Lake; Hook Lake; Read Lake
Lat/Long WENS-112.0000 -103.0000 59.7500 57.0000
Subjectseconomic geology; geochemistry; fossil fuels; mineral exploration; exploration; uranium; uranium deposits; mineralization; graphite; unconformity-type deposit; unconformities; alteration; hydrothermal alteration; sedimentary rocks; basins; sedimentary basins; basement geology; bedrock geology; metamorphic rocks; schists; hydrocarbons; organic materials; pyrobitumen; shales; petrography; reflectance; spectroscopy; spectroscopic analyses; organic geochemistry; organic maturity; Athabasca Basin; Athabasca Group; Rae Province; Hearne Province; Douglas Formation; Precambrian; Proterozoic
Illustrationssketch maps; plots; stratigraphic sections; schematic diagrams; graphs
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
AbstractPyrobitumen associated with uranium ores of Athabasca Basin unconformity-type deposits has been proposed to form during mineralization by hydrothermal alteration of basement graphite.

Textural studies indicate that basement graphite was physically altered by mineralizing fluids, but was not involved in pyrobitumen formation. As pyrobitumen (and its parent petroleum) includes and crosscuts ore, it postdated mineralization and had no role in the initiation and localization of unconformity uranium deposits. Petrographic and geochemical data indicate that the Mesoproterozoic Douglas Formation black shale generated petroleum in the past and sourced the pyrobitumen associated with the deposits. The older
episode of petroleum generation and migration was overprinted by crude oils related to Athabasca tar sands (during Late Cretaceous to early Tertiary) that descended into the Athabasca Group and basement rocks, and subsequently degraded to solid to tarry bitumens in a manner analogous to the proposed earlier migration of petroleum from the Douglas Formation.

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