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TitreGeochemical Characteristics of Mississippian to Pliensbachian Volcanic and Hypabyssal Rocks in the Hoodoo Mountain area (NTS 104B/14E)
AuteurZagorevski, A; Mihalynuk, M G; Logan, J M
SourceGeological Fieldwork 2011, Paper 2012-1; par British Columbia Geological Survey; British Columbia Geological Survey Geological Fieldwork Paper no. 2012-1, 2012 p. 121-134
LiensOnline - En ligne
Séries alt.Secteur des sciences de la Terre, Contribution externe 20110289
ÉditeurBritish Columbia Ministry of Energy and Mines
Documentpublication en série
SNRC104B/14; 104B/11
Lat/Long OENS-131.2500 -131.0000 57.0000 56.6667
Sujetsgéochimie des roches totales; Pliensbachien; lithologie; roches volcaniques felsiques; roches volcaniques mafiques; granites; dacites; basaltes; tufs volcaniques; géochimie des éléments en trace; roches intrusives de semi-profondeur; Assemblage de Stikine ; Groupe de Stuhini ; Groupe d'Hazelton ; géochimie; Mississippien; Trias; Jurassique
Illustrationsgeochemical analyses
ProgrammeGisements polymétalliques - nord-ouest de la Cordillère canadienne (Yukon et Colombie-Britannique), GEM : La géocartographie de l'énergie et des minéraux
Résumé(disponible en anglais seulement)
Carboniferous to Jurassic rocks of the northwestern Stikinia commonly comprise thick successions of petrographically similar sedimentary, volcaniclastic and consanguineous hypabyssal rocks. The similarity of these sequences leads to ambiguity in correlations of units, hampering the establishment of a consistent stratigraphic framework in the predominantly ice and snow-covered Hoodoo Mountain area (NTS 104B/14; Figure 1). In addition, this part of Stikinia contains economically important, diverse and epoch specific metallotects that include; Carboniferous Kuroko type VHMS, Triassic Besshi type VMS, Triassic and Jurassic calcalkaline and
alkaline Cu-Au-Ag±Mo porphyry, skarn and vein deposits and Jurassic submarine exhalative Au-Ag-rich VMS mineralization. The majority of these deposits are either stratabound or directly related to short-lived magmatic events making stratigraphic position a critical
factor in understanding which deposit types are likely to be present. The purpose of this contribution is to test the utility of whole rock geochemistry to discriminate and calibrate the Mississippian to Pliensbachian stratigraphy proposed by Mihalynuk et al. (2011a; 2011b), thereby providing a means of directing cost effective and successful mineral exploration throughout the varied stratigraphy of the area.