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TitleTectonic evolution and metallogeny of the southwestern Trans-Hudson Orogen
AuthorCorrigan, D; Galley, A G; Pehrsson, S
SourceMineral deposits of Canada: a synthesis of major deposit-types, district metallogeny, the evolution of geological provinces, and exploration methods; by Goodfellow, W D (ed.); Geological Association of Canada, Mineral Deposits Division, Special Publication no. 5, 2007 p. 881-902
Year2007
Alt SeriesEarth Sciences Sector, Contribution Series 20070217
PublisherGeological Association of Canada, Mineral Deposits Division (St. John's, NL, Canada)
Documentserial
Lang.English
Mediapaper; DVD; digital
RelatedThis publication is contained in Goodfellow, W D; (2007). Mineral deposits of Canada: a synthesis of major deposit-types, district metallogeny, the evolution of geological provinces, and exploration methods, Geological Association of Canada, Mineral Deposits Division, Special Publication no. 5
File formatpdf
ProvinceManitoba; Saskatchewan
NTS53L; 53M; 53N; 54C; 54D; 54E; 54F; 54K; 54L; 54M; 63I; 63J; 63K; 63L; 63M; 63N; 63O; 63P; 64; 73I; 73J; 73O; 73P; 74A; 74B; 74C; 74F; 74G; 74H; 74I; 74J; 74K; 74N; 74O; 74P
AreaFlin Flon; Churchill River; Churchill; Reindeer Lake; Lake Athabasca
Lat/Long WENS-110.0000 -90.0000 60.0000 54.0000
Subjectstectonics; economic geology; tectonic interpretations; tectonic environments; tectonic evolution; tectonic history; continental margins; accretion; metallogeny; metallogenic provinces; Archean; magmatism; craton; tectonostratigraphic zones; orogenesis; volcanogenic deposits; sulphides; mineral deposits; mineral occurrences; igneous rocks; plutonic rocks; copper; nickel; platinum; gold; Trans-Hudson Orogen; Hearne Craton; Superior Boundary Zone; Glennie-Flin Flon Complex; La Ronge Domain; Lynn Lake Domain; Reindeer Zone; Rottenstone Domain; Southern Indian Domain; Wathaman-Kisseynew Domain; Granville Lake Structural Zone; Kisseynew Domain; Sask Craton; platinum group elements; Precambrian; Proterozoic
Illustrationssketch maps; cross-sections
ProgramConsolidating Canada's Geoscience Knowledge
ProgramTargeted Geoscience Initiative (TGI-3), 2005-2010
AbstractThe western Trans-Hudson Orogen records a complex, late Neoarchean to late Paleoproterozoic history of intraplate magmatism followed by rifting, formation of oceanic crust, arcs and back-arcs, intraoceanic and continental margin terrane accretion, ending with terminal collision between the juvenile internides and three Archean cratons. Distinct metallogenic associations are interpreted to reflect the evolving tectonostratigraphic, magmatic, structural, and thermal phases of the orogen, as a response to interaction between the different tectonic plates and crustal blocks. During the late Neoarchean, mafic plutonic rocks with locally high platinum group element (PGE) concentrations were emplaced in the Peter Lake Domain, along a proto-rifted margin, possibly in an intracontinental extensional environment. From about 2.07 to 1.90 Ga, a passive margin prism was deposited and unconformably overlain by a ca. 1.88 to 1.86 Ga foredeep basin along the rifted Hearne craton margin, leading to the formation of numerous sub-economic sedimentedhosted Cu, Cu-U, and Pb-Zn deposits. During the interval 1.92 to 1.88 Ga, volcanogenic massive sulphide (VMS) deposits (Cu-Zn ± Pb ± Ag ± Au) formed in paleotectonic environments that have been broadly linked to the various stages of oceanic arc evolution from nascent proto-arc to early rifted arc, to mature arc, to mature rifted evolved arc. This episode generated the world-class Flin Flon VMS mining camp as well as numerous other, less endowed but nonetheless prospective deposits. Relatively more modest sediment-hosted massive sulphide deposits also formed during that time period in back-arc or forearc basins. During the waning stages of primitive intraoceanic arc development, voluminous mafic to ultramafic flows and sills hosting the Thompson magmatic Ni-Cu-(PGE) deposit were emplaced
along the Superior craton margin and its Paleoproterozoic cover sequence, potentially in an active, ensialic back-arc rift environment. Terminal collision between the Hearne, Sask, and Superior cratons triggered a final episode of orogenic Au mineralization during the interval 1.83 to 1.79 Ga.
GEOSCAN ID224209