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TitreStructure, stratigraphy, U-Pb geochronology and alteration characteristics of gold mineralization at the Detour Lake Gold Deposit, Ontario, Canada
AuteurOliver, J; Ayer, J; Dubé, B; Aubertin, R; Burson, M; Panneton, G; Friedman, R; Hamilton, M
SourceExploration and Mining Geology vol. 20, 2012 p. 1-30
Année2012
Séries alt.Secteur des sciences de la Terre, Contribution externe 20130054
Documentpublication en série
Lang.anglais
Mediapapier
ProvinceOntario
SNRC32E/13
Lat/Long OENS-80.0000 -79.5000 50.0000 49.7500
Sujetsgîtes minéralogiques; gisements minéraux; or; minéralisation; analyses structurales; caractéristiques structurales; interpretations structurelles; contrôles structuraux; datations au uranium-plomb; datation au uranium-plomb; rapports uranium-plomb; altération; Archéen; Formation de Detour Lake ; Ceinture d'Abitibi Greenstone ; géologie structurale; géochronologie; stratigraphie; Précambrien
Illustrationslocation maps; tables; Concordia diagrams; photomicrographs; stereonets; photographs; stratigraphic columns
ProgrammeÉtude des gîtes d'or, Initiative géoscientifique ciblée (IGC-4)
Résumé(disponible en anglais seulement)
The Detour Lake gold deposit is located within the northwestern limit of the Archean Abitibi Subprovince of the Superior Province. Mineralized zones are hosted by a sequence of pillowed and massive flows, hyaloclastite units, and altered ultramafic rocks, and are commonly oriented parallel to a series of high-strain zones that are co-planar to the regional-scale Sunday Lake Deformation Zone. Early in its kinematic history, the Sunday Lake Deformation Zone placed older (2.72 Ga) volcanic rocks of the Detour Lake Formation over younger (2.70 Ga) sedimentary rocks of the Caopatina assemblage. Gold mineralization is also parallel to the position of a laterally persistent siliceous rock unit, the 2.725 Ga 'Chert Marker Horizon.' The Chert Marker Horizon coincides with the boundary between the mafic-dominated upper Detour Lake Formation and the ultramafic-dominated lower Detour Lake Formation. Stratigraphic and geochronological data suggest that the Chert Marker Horizon is a deformed felsic volcaniclastic unit.
GEOSCAN ID292585