GEOSCAN, résultats de la recherche

Menu GEOSCAN


TitreDeformation history of the Black Bay Fault and associated mineralization, Northwest Territories
TéléchargerTéléchargements
AuteurJamison, D; Acosta-Góngora, P; Knox, B K; Pehrsson, S J; Lin, S
SourceCommission géologique du Canada, Présentation scientifique 69, 2017, 1 feuille, https://doi.org/10.4095/304197
Année2017
ÉditeurRessources naturelles Canada
Documentpublication en série
Lang.anglais
DOIhttps://doi.org/10.4095/304197
Mediaen ligne; numérique
Formatspdf
ProvinceTerritoires du Nord-Ouest
SNRC75B; 75G; 75H
Lat/Long OENS-108.0000 -104.5000 62.0000 60.0000
Sujetsgéologie du substratum rocheux; caractéristiques structurales; failles; plis; lithologie; roches ignées; roches intrusives; gabbros; syenites; granites; tonalites; granodiorites; leucotonalites; diorites; pegmatites; roches métamorphiques; gneiss oeillés; évolution tectonique; déformation; plissement; soulèvement de la croûte; intrusions; gisements minéraux; potentiel minier; genèse des minerais; minéralisation; système hydrothermal; sulfures; cadre tectonique; interprétations géophysiques; interprétations magnétiques; analyses structurales; déformation; analyse texturale; foliation; linéations; analyses du comportement des surfaces; analyse cinématiques; Faille de Black Bay ; géophysique; tectonique; géologie économique; Précambrien; Protérozoïque
Illustrationslocation maps; geoscientific sketch maps; photographs; stereonets
ProgrammeGéologie du substratum rocheux et des dépôts meubles du sud de la province de Rae, GEM2 : La géocartographie de l'énergie et des minéraux
Image
Diffusé2017 08 09
Résumé(Sommaire disponible en anglais seulement)
Overall the Black Bay Fault experience four main generation of deformation, D1-4. Beginning with sinistral west side up motion, D1 produced the majority of exhumation of the BBF. D2 produced large scale folding of the Black Bay Fault resulting in the variation of the fault trace. D3 marks the onset of dextral west-side up transpression. D4 produced brittle to brittle-ductile deformation, better preserved in the south due to differential uplift along the fault. This study shows that REE mineralization along the BBF is not restricted to northern SK, and instead, similar mineralization assemblages are observed ~100 km NE into the NWT, at the Gemelo showing. Thus, the historically underestimated economic potential of the NE portion of the BBF has to be re-evaluated.
Résumé(Résumé en langage clair et simple, non publié et disponible en anglais seulement)
The trace of the Black Bay fault (BBF) extends from N Saskatchewan to the SE portion of the Northwest Territories, and represent a sub-domain boundary within the southern Rae craton, in the Churchill Province. The BBF has historically been known for hosting U-Au-REE deposits at its SW and central parts in structures derived from brittle deformation (veins, breccias). However, little work has been done on the NE section of this fault in terms of its deformation history and potential for mineral deposits. In this study we provide preliminary results after two field mapping seasons on the deformation history of the NE portion of the BBF, along with its relationship to the newly discovered syenite-hosted rare-earth-elements Gemelo showing.
GEOSCAN ID304197