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Titre	Mineral deposits of Arctic Canada: excerpts from a chapter in "Mineral deposits in the Arctic"
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Licence	Veuillez noter que la Licence du gouvernement ouvert - Canada remplace toutes les licences antérieures.
Auteur	Harrison, J C; Chorlton, L B
Source	Commission géologique du Canada, Présentation scientifique 47, 2016, 1 feuille, https://doi.org/10.4095/299515 Accès ouvert
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Année	2016
Éditeur	Ressources naturelles Canada
Document	publication en série
Lang.	anglais
DOI	https://doi.org/10.4095/299515
Media	en ligne; numérique
Formats	pdf
Province	Territoires du Nord-Ouest; Nunavut; Yukon
SNRC	15; 16; 25; 26; 27; 28; 29; 35; 36; 37; 38; 39; 45; 46; 47; 48; 49; 55; 56; 57; 58; 59; 65; 66; 67; 68; 69; 75; 76; 77; 78; 79; 85; 86; 87; 88; 89; 95; 96; 97; 98; 98; 105; 106; 107; 115; 116; 117
Région	L'Arctique canadien
Lat/Long OENS	-141.0000 -60.0000 85.0000 60.0000
Sujets	Archéen; gisements minéraux; gîtes sulfureux; fer; or; analyses de la roche, éléments de terres rares; gisements porphyriques; cuivre porphyrique; gisements alluvionnaires; mantos; uranium; gîtes polymétalliques; argent; plomb; zinc; nickel; cuivre; platine; gîtes de la vallée du mississippi; historique d'exploration; historique de l'exploitation minière; gîtes volcanogènes; régions orogéniques; terres rares; éléments du groupe de platine; minéraux métalliques; géologie économique; Précambrien
Illustrations	cartes de localisation; photographies
Programme	Bureau du Directeur Général de la CGC, Direction du Centre et du Nord du Canada
Diffusé	2016 12 14
Résumé	(disponible en anglais seulement) The geology of Arctic Canada is divided into the cratons or granitic and metamorphic roots of the Canadian shield which contain much of the gold, copper, nickel, iron, uranium, rare earth elements and diamond deposits. The bounding Mesoproterozoic to Phanerozoic platforms, basins and accreted terrains of the Interior platform and Canadian Cordillera, which extend into the High Arctic, contain much of the zinc, lead, gold, silver, copper, molybdenum and tungsten resources. Basement nuclei in the Canadian shield are the four Archean cratons. Oldest of these is the Slave craton (4030-2550 Ma) on the west side of the shield. It is bound by Paleoproterozoic orogens: Thelon-Taltson to the east, Wopmay to the west and the Athapuskow aulcogen to the south in the east arm of Great Slave Lake. The Slave craton is associated with orogenic gold, volcanogenic massive sulphides (VMS), diamond-rich kimberlites and a large REE deposit. Lying to the east and underlying most of the remaining parts of the Canadian shield across the Canadian Arctic are the Rae (3250-2580 Ma) and Hearne (2740-2540 Ma) cratons. Significant in the Meso- to Neoarchean Rae craton are supracrustal rocks containing important resources of iron, orogenic gold of Paleoproterozoic age, uranium associated with a sub- Paleoproterozoic unconformity, nickel and commercially significant diamond-rich kimberlites. Known resoources in the Hearne craton include nickel, copper, platinum group elements (PGE), uranium and VMS. The fourth craton is represented by the Superior craton, mostly located south of latitude 60 but also exposed in the northern extremity of Quebec. It is bound to the north by the Paleoproterozoic Cape Smith belt (1870-1800 Ma), part of the circum-Superior Trans-Hudson orogen. This belt is noted for its important resources of nickel, copper and platinum group elements. The other significant Paleoproterozoic belt is represented by the Wopmay orogen (1890-1840 Ma) which lies west of the Slave Craton. This features an eastern sedimentary belt and, to the west, the plutonic and volcanic rocks of the Great Bear magmatic zone. Noteworthy resources include iron oxide-copper-gold (IOCG), polymetallic veins and vein uranium. The Precambrian cratons and Paleoproterozoic basins are fringed to north and west by Mesoproterozoic to upper Paleozoic shelf carbonate sequences. These rocks contain carbonate-hosted (MVT) zinc-lead deposits. Also present in this realm are iron deposits, notably the very large Crest deposit in Neoproterozoic strata. Southwestward the shelf succession gives way to Cambrian to Devonian deep water sediments of the Selwyn Basin. Important resources within the Selwyn Basin include three shale-hosted zinc-lead deposits in the Yukon and two significant VMS copper-zinc deposits. The western part of the Yukon is dominated by Jurassic and Cretaceous accreted terranes and associated granitoid rocks. This is a key realm for gold, polymetallic silver-lead-zinc veins and nickel-copper-PGE. Also associated with Mesozoic intrusives are tungsten and copper skarns, and copper-molybdenum porphyry deposits. Rounding out the resources of the Yukon are eleven gold placer districts of which the Klondike is most significant.
Sommaire	(Résumé en langage clair et simple, non publié) Les ressources minérales de l'Arctique canadien sont associées aux cratons des Esclaves, de Rae et de Hearne, aux orogènes du Paléoprotérozoïque et à la Cordillère canadienne. Le craton des Esclaves est connu pour son or orogénique (12), ses sulfures massifs volcanogènes (SMV : 3), ses kimberlites productives (5) et un gisement d'ÉTR. Le craton de Rae renferme du fer (2), de l'or orogénique (4), de l'uranium (4), du nickel (1) et des kimberlites (2). Le craton de Hearne contient des gisements de nickel (2), d'uranium (1), de SMV (1) et d'or orogénique. Dans les orogènes du Paléoprotérozoïque, les ressources minérales sont associées à des roches ultramafiques dans la ceinture de Cape Smith (trois gisements de Ni-Cu-ÉGP) et dans le Batholite de Great Bear de l'orogène de Wopmay où les ressources comprennent des gisements d'oxyde de fer-cuivre-or (2), des filons à minéralisation polymétallique (2) et un filon uranifère (1). La Cordillère canadienne (et l'Arctique canadien en général) renferment d'importantes ressources de gisements de type Mississippi-Valley (7), des gisements sédimentaires exhalatifs (5), de l'or filonien (14), des gisements d'Ag-Pb-Zn (5), des SMV (4), des porphyres (5), des skarns cuprifères et tungsténifères (6), des gisements de Ni-Cu-ÉGP (1) et de l'or placérien (11 districts).
GEOSCAN ID	299515