| Titre | Relationships between pluton emplacement, mineralization and deformation at the Gander/Avalon boundary, Newfoundland from a geochronological and thermochronological perspective |
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| Auteur | Kellett, D A ;
Rogers, N; McNicoll, V J; van Staal, C R |
| Source | Association géologique du Canada-Association minéralogique du Canada, Réunion annuelle, Programme et résumés vol. 36, 2013 p. 123 |
| Liens | Online - En ligne
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| Image |  |
| Année | 2013 |
| Séries alt. | Secteur des sciences de la Terre, Contribution externe 20120480 |
| Réunion | Geological Association of Canada - Mineralogical Association of Canada Annual Meeting 2013; Winnipeg; CA; mai 22-24, 2013 |
| Document | publication en série |
| Lang. | anglais |
| Media | papier |
| Formats | pdf |
| Province | Terre-Neuve-et-Labrador |
| SNRC | 1M/12; 1M/13; 1M/14; 2C/13; 2D/03; 2D/04; 2D/05; 2D/06; 2D/07; 2D/09; 2D/10; 2D/11; 2D/12; 2D/13; 2D/14; 2D/15; 2D/16; 2E; 2F/04; 2F/05; 2F/06; 2L/04; 2L/12; 2L/13; 2L/14; 2M/04; 2M/05; 2M/12; 11O/09;
11O/10; 11O/11; 11O/14; 11O/15; 11O/16; 11P/09; 11P/10; 11P/11; 11P/12; 11P/13; 11P/14; 11P/15; 11P/16; 12A; 12B/01; 12B/02; 12B/03; 12B/06; 12B/07; 12B/08; 12B/09; 12B/10; 12B/11; 12B/14; 12B/15; 12B/16; 12G/01; 12G/08; 12H; 12I; 12P/01; 12P/02;
12P/03; 12P/07; 12P/08; 12P/09 |
| Région | Newfoundland Appalachians |
| Lat/Long OENS | -60.0000 -53.5000 49.7500 47.5000 |
| Sujets | roches ignées; roches plutoniques; minéralisation; déformation; magmatisme; géologie du substratum rocheux; géologie du socle; corrélations stratigraphiques; géochronométrie; datation radiométrique;
datation au uranium-plomb; caractéristiques structurales; failles; Zone de Gander ; Zone d'Avalon ; Faille de Dover ; géochronologie; pétrologie ignée et métamorphique; géologie structurale; tectonique; Paléozoïque; Dévonien |
| Programme | Initiative géoscientifique ciblée (IGC-4) Étude des gîtes porphyriques |
| Diffusé | 2013 01 01 |
| Résumé | (disponible en anglais seulement)
Devonian plutonic suites in the Canadian Appalachians are locally associated with Sn, W, Mo and In mineralization. In central Newfoundland some of the most
mineralogically-prospective plutons, for example the Ackley Granite, are spatially associated with the Gander/Avalon terrane boundary. This relationship suggests that there may be tectonic and/or structural controls on pluton emplacement and
localization of mineralization. Within the Geological Survey of Canada's Targeted Geoscience Initiatives IV Intrusion-Related Mineralization Project the tectonic controls on porphyry-style mineral systems are under examination to determine their
potential as a vector towards zones of high mineral prospectivity. Identifying such relationships is especially significant in regions like the Canadian Appalachians where extensive glacial cover often masks direct observations of mineralisation.
Here we present preliminary results from our SHRIMP U-Pb and 40Ar/39Ar single crystal and in situ geochronological and thermochronological data set. These data are used to constrain the timing of deformation along the Dover fault, which marks the
Gander/Avalon terrane boundary, and the regional emplacement/cooling history of plutonism. Implications for tectonics and mineral potential of the region are considered. |
| GEOSCAN ID | 296032 |
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