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TitleGeological setting and mineralization styles of the Sunday Lake and Lower Detour 'gold trends', northwestern Abitibi Greenstone Belt, Ontario and Quebec
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AuthorCastonguay, S; Dubé, B; Mercier-Langevin, P; Wodicka, N
SourceTargeted Geoscience Initiative: 2018 report of activities; by Rogers, N (ed.); Geological Survey of Canada, Open File 8549, 2019 p. 9-22, (Open Access)
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
RelatedThis publication is contained in Rogers, N; (2019). Targeted Geoscience Initiative: 2018 report of activities, Geological Survey of Canada, Open File 8549
File formatpdf
ProvinceQuebec; Ontario
NTS32E/13; 32E/14; 32E/15; 32L/02; 32L/03; 32L/04
Lat/Long WENS -80.0000 -78.5000 50.5000 49.5000
Subjectseconomic geology; structural geology; Archean; mineral deposits; sulphide deposits; gold; mineral exploration; ore mineral genesis; mineralization; ore controls; structural controls; greenstone belts; tectonic setting; deformation; magmatism; intrusions; dykes; plutons; strain; quartz veins; carbonate; tourmaline; alteration; silicification; chloritization; biotitization; bedrock geology; lithology; igneous rocks; intrusive rocks; gabbros; porphyries; greenstones; monzodiorites; diabases; monzonites; volcanic rocks; basalts; andesites; felsic volcanic rocks; tuffs; volcaniclastics; mafic volcanic rocks; sedimentary rocks; turbidites; conglomerates; iron formations; argillites; siltstones; cherts; structural features; faults; faults, reverse; fault zones; folds; splays; drillholes; core samples; calcite; talc; Abitibi Greenstone Belt; Detour Lake Mine; Vortex Deposit; Martiniere-Bug Lake Deposit; Deloro Assemblage; Caopatina Assemblage; Sunday Lake Deformation Zone; Lower Detour Deformation Zone; Bapst Fault Zone; Grasset Fault Zone; Grasset Ultramafic Complex; Massicotte Deformation Zone; Detour Lake Formation; Bug Lake Porphyry; ore systems approach; volcanogenic massive sulphide deposits (VMS); wackes; Precambrian
Illustrationsgeoscientific sketch maps; photographs; schematic cross-sections
ProgramTargeted Geoscience Initiative (TGI-5), Knowledge Management Coordination
ProgramTargeted Geoscience Initiative (TGI-5), Gold ore systems - System Controls - Time and Space
Released2019 03 01
AbstractThe Detour Lake gold mine (approximately 25 Moz Au) and Lower Detour zones (e.g. Zone 58N; 534 000 oz Au) are in the northwestern part of the Abitibi greenstone belt in Ontario. They are spatially associated with the Sunday Lake and Lower Detour deformation zones that delineate gold trends extending eastward into Quebec, where gold mineralized zones, such as the Vortex and Martiniere - Bug Lake deposits, also occur. Gold is associated with quartz-carbonate±tourmaline veins and/or silicified zones and disseminated to locally semi-massive sulphides in veins or sericitized, chloritized, or biotitized wall rocks. These structurally controlled auriferous zones are hosted in volcanic sequences of the 2734 to 2724 Ma Deloro assemblage and in porphyritic rocks near faulted contacts with Porcupine-like turbidite of the less than 2.70 Ga Caopatina assemblage. Strained Timiskaming-like polygenic conglomerate locally delineates the regional-scale deformation zones. These relationships are analogous to parts of the southern Abitibi belt, such as in Timmins - Porcupine or Val d'Or areas. Geochemical and geochronological analyses are underway to document the lithotectonic setting and alteration associated with gold mineralization and to better constrain the timing of deformation, magmatism, sedimentation, and mineralization along the Sunday Lake and Lower Detour deformation zones.