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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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LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorCastonguay, SORCID logo; Dubé, B; Mercier-Langevin, P; Wodicka, NORCID logo
SourceTargeted Geoscience Initiative: 2018 report of activities; by Rogers, N (ed.); Geological Survey of Canada, Open File 8549, 2019 p. 9-22, https://doi.org/10.4095/313625 Open Access logo Open Access
Year2019
PublisherNatural Resources Canada
Documentopen file
Lang.English
Mediaon-line; digital
RelatedThis publication is contained in Targeted Geoscience Initiative: 2018 report of activities
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; 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.
Summary(Plain Language Summary, not published)
The Targeted Geoscience Initiative (TGI) is directed towards providing next generation knowledge and methods to facilitate more effective targeting of buried mineral deposits. The program aims to enhance the effectiveness of exploration for Canada's major mineral systems by resolving foundational geoscience problems that constrain the geological processes responsible for the liberation metals from their source region, transportation of these ore metals and control their eventual deposition. TGI supports projects on gold, Ni-Cr-PGE, porphyry-style mineralization, uranium and volcanic- and sedimentary-hosted base metal mineralization ore systems, with each project divided into subprojects focused on resolving specific knowledge gaps by integrating data and studies from multiple sites across Canada. Herein, we present interim results and interpretations from a selection of the research activities currently being conducted under the auspices of TGI.
GEOSCAN ID313625

 
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