Publication Summary
Issue ID: P2012-01-09
Title: Geochemical Characteristics of Mississippian to Pliensbachian Volcanic and Hypabyssal Rocks in the Hoodoo Mountain Area (NTS 104B/14E)
Author(s): Zagorevski, A., Mihalynuk, M.G., Logan, J.M.
Series Name: Paper
Publication Year: 2012
Larger Work Citation: in Geological Fieldwork 2011, B.C. Ministry of Energy and Mines, Paper 2012-01
Place Keyword(s): British Columbia, Northwest, Hoodoo Mountain, Iskut River
Lat/Long (NSWE): 57.25, 56.5, -131.25, -131
Theme Keyword(s): Geological Fieldwork, whole rock geochemistry, Stikine assemblage, Stuhini Group, Hazelton Group
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-AgħMo 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 liensbachian 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.