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TitleGeological setting and gold mineralization associated with the Sunday Lake and Lower Detour deformation zones, 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; Wodicka, NORCID logo; Mercier-Langevin, P
SourceTargeted Geoscience Initiative 5: contributions to the understanding of Canadian gold systems; by Mercier-Langevin, P (ed.); Lawley, C J MORCID logo (ed.); Castonguay, SORCID logo (ed.); Geological Survey of Canada, Open File 8712, 2020 p. 127-142, https://doi.org/10.4095/323670 Open Access logo Open Access
Year2020
PublisherNatural Resources Canada
Documentopen file
Lang.English
Mediaon-line; digital
RelatedThis publication is contained in Targeted Geoscience Initiative 5: contributions to the understanding of Canadian gold systems
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; regional geology; structural geology; stratigraphy; tectonics; geochemistry; Science and Technology; Nature and Environment; Archean; mineral deposits; gold; volcanogenic deposits; sulphide deposits; mineral exploration; exploration guidelines; ore mineral genesis; mineralization; ore controls; structural controls; greenstone belts; host rocks; tectonic setting; deformation; magmatism; intrusions; dykes; plutons; strain; basins; deposition; quartz veins; carbonate; tourmaline; pyrite; pyrrhotite; hydrothermal alteration; bedrock geology; lithology; igneous rocks; ultramafic rocks; intrusive rocks; gabbros; porphyries; felsic intrusive rocks; monzodiorites; diabases; monzonites; volcanic rocks; basalts; andesites; felsic volcanic rocks; tuffs; volcaniclastics; mafic volcanic rocks; lava flows; sedimentary rocks; turbidites; conglomerates; iron formations; argillites; siltstones; cherts; metamorphic rocks; greenstones; structural features; faults; faults, reverse; fault zones; folds; drillholes; core samples; calcite; talc; lithostratigraphy; geochemical analyses; Abitibi Greenstone Belt; Sunday Lake Deformation Zone; Lower Detour Deformation Zone; Detour Lake Formation; Caopatina Assemblage; Detour Lake Mine; West Detour Deposit; Massicotte Deformation Zone; Deloro Assemblage; Sunday Lake Gold Trend; Vortex Deposit; Casault Property; Bug Lake-Martiniere Deposit; Sunday Lake Fault Zone; Bug Lake Porphyry; Precambrian
Illustrationslocation maps; geoscientific sketch maps; geochemical plots; ternary diagrams; photographs; stratigraphic sections; geochemical profiles; schematic cross-sections; tables
ProgramTargeted Geoscience Initiative (TGI-5) Gold ore systems
Released2020 06 11
AbstractThe Detour Lake gold mine (~25 Moz or 775 t Au) and Lower Detour zones (e.g. Zone 58N; 0.53 Moz or 16.6 t Au) are located in the northwestern part of the Abitibi greenstone belt in Ontario. They are spatially associated with the Sunday Lake and Lower Detour deformation zones, which extend eastward into Quebec where they host other auriferous zones (e.g. Vortex and Martiniere-Bug Lake deposits). Gold is associated with quartz-carbonate-pyrite-pyrrhotite±tourmaline veins and/or disseminated to very locally semi-massive sulphides in hydrothermally altered wall rocks. These structurally controlled auriferous zones are hosted in tholeiitic and calc-alkaline volcanic rocks of the 2734 to 2724 Ma Deloro assemblage and in ca. 2694 Ma subalkaline to locally alkaline porphyritic intrusive rocks near faulted contacts with the <2.70 Ga Caopatina clastic sedimentary assemblage. Panels or fault-bounded basin remnants of strained Timiskaming-like polymictic conglomerate locally delineate the regional-scale deformation zones and yield maximum depositional ages of between 2706 and 2692 Ma. These relationships are reminiscent of the prolific southern Abitibi greenstone belt in the Timmins-Porcupine and Val-d'Or gold districts. The revised regional geological setting, coupled with documentation of the key characteristics of gold deposits and their hydrothermally altered host rocks, provide a geological framework for improved mineral exploration strategies in a poorly exposed, but prospective region that includes the giant Detour Lake gold mine.
Summary(Plain Language Summary, not published)
The main objective of phase 5 (2015-2020) of Natural Resources Canada and Geological Survey of Canada's Targeted Geoscientific Initiative (TGI) program was to generate new knowledge, methodologies and models to enhance the exploration industry's ability to detect buried ore deposits. This synthesis volume contains 20 individual papers that discuss craton to deposit-scale characteristics of auriferous deposits, plus some support material pertaining to the TGI-5 Gold project.
GEOSCAN ID323670

 
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