Hanging wall alteration above the Paleoproterozoic, Callinan and triple 7 volcanic massive sulfide deposits, Flin Flon, Manitoba, Canada | Posted on:2005-04-08 | Degree:M.Sc | Type:Dissertation | University:Laurentian University of Sudbury (Canada) | Candidate:Tardif, Nicole P | Full Text:PDF | GTID:1450390008484027 | Subject:Geology | Abstract/Summary: | | Interflow and interpillow volcanic sedimentary rocks (VSR) in the hanging wall to the Paleoproterozoic Callinan and 777 volcanogenic massive sulfide deposits are altered for 910 m above the deposits. Elevated concentrations of Hg, Ni, Tl, Cr, Sb, U, Mo and Zn extend up to 15 m into the hanging wall (Zone A), immediately above the massive sulfide deposits, and are the best indicators of hydrothermal alteration related to the formation of Callinan and 777 mineralization. Less-elevated and zoned Ni, Cr, Zn, Cl, Hg, K 2O/K2O+Na2O and Al2O3/Na 2O (Zones B, C, D and E) anomalies occur up to 910 m above the massive sulfide deposits. Similarities in anomalous elements observed in Zone A suggest that anomalies produced in Zones B, C, D and E may reflect a weaker part of the same through-going, waning hydrothermal system responsible for the anomalies in Zone A. Localized and intense epidote-quartz alteration and silicification overprint the VSR throughout the study area and are interpreted to be a product of younger superimposed, stacked hydrothermal systems that diluted the geochemical signature produced by the earlier through-going, waning hydrothermal event.; Variations in the immobile trace elements: Zr, Sc, Co, V, rare-earth elements, and the trace element ratios: La/Sc, Zr/Sc, Co/Zr, Sc/La, Sc/Zr, indicate that the VSR are heterogeneous in composition and are derived from both felsic and mafic volcanic components. A decrease in the felsic component within the VSR up section (indicated by increasing La, Zr, Zr/Co, La/Sc and Zr/Sc) shows proximity to the rhyolite-hosted Callinan and 777 VMS deposits.*; *This dissertation is a compound document (contains both a paper copy and a CD as part of the dissertation). The CD requires the following system requirements: Adobe Acrobat. | Keywords/Search Tags: | Massive sulfide, Hanging wall, Callinan, Volcanic, VSR, Alteration | | Related items |
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