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TitleGold along Cordilleran faults: Key characteristics and analogies between Phanerozoic and Archean settings
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AuthorCastonguay, S; Ootes, L; Mercier-Langevin, P; Devine, F
SourceTargeted Geoscience Initiative: 2017 report of activities, volume 1; by Rogers, N (ed.); Geological Survey of Canada, Open File 8358, 2018 p. 139-145, https://doi.org/10.4095/306460 (Open Access)
Year2018
PublisherNatural Resources Canada
Documentopen file
Lang.English
Mediaon-line; digital
RelatedThis publication is contained in Rogers, N; (2018). Targeted Geoscience Initiative: 2017 report of activities, volume 1, Geological Survey of Canada, Open File 8358
File formatpdf
ProvinceBritish Columbia; Yukon
NTS104M/08; 104M/09; 104M/10; 104M/15; 104N/12; 105D/03; 105D/04; 105D/05; 105D/06
AreaTagish Lake; Tally-Ho Mountain; Gold Hill; Mount Hodnett
Lat/Long WENS-135.2500 -133.7500 60.5000 59.2500
Subjectseconomic geology; structural geology; tectonics; mineral deposits; mineral potential; mineral exploration; ore mineral genesis; ore controls; structural controls; gold; vein deposits; epithermal deposits; polymetallic ores; mesothermal deposits; skarn deposits; tectonic evolution; tectonic setting; faulting; magmatism; intrusions; mineralization; bedrock geology; lithology; igneous rocks; intrusive rocks; volcanic rocks; metamorphic rocks; structural features; faults; shear zones; modelling; Archean; Canadian Cordillera; Llewellyn Fault; Tally Ho Shear Zone; Engineer Mine; Mount Skukum Mine; Bennett Plateau; Intermontane Belt; Coast Belt; ore systems approach; orogenic gold deposits; lithotectonics; Phanerozoic; Cenozoic; Tertiary; Mesozoic; Cretaceous; Jurassic; Triassic; Paleozoic; Precambrian; Proterozoic
Illustrationslocation maps; geoscientific sketch maps; photographs
ProgramKnowledge Management Coordination, Targeted Geoscience Initiative (TGI-5)
ProgramGold systems, Targeted Geoscience Initiative (TGI-5)
Released2018 01 19
AbstractSeveral gold deposits and prospects in the Canadian Cordillera of British Columbia and Yukon are associated, at least spatially, to major fault zones. The Llewellyn fault and Tally Ho shear zone region of northwestern British Columbia and southern Yukon is the locus of a series of vein-hosted gold prospects and deposits, including the past-producing Engineer and Mount Skukum mines. Many of these gold occurrences have epithermal polymetallic signatures, although some are considered mesothermal-orogenic, as such related to first-order crustal breaks and synchronous magmatism. However, the temporal and genetic relationships between the orogenic- and epithermal-style systems along the Llewellyn fault and Tally Ho shear zone remain to be clearly established. Reconnaissance work has underlined a three-part relationship between these large-scale structures, gold mineralization and Eocene magmatic complexes. Characterization of Llewellyn fault zone in the Bennett Plateau and Tagish Lake area of British Columbia, and of the Tally Ho shear zone in the Tally Ho Mountain, Gold Hill and Mount Hodnett areas of Yukon, and of their spatially associated gold mineralization, aims to test this model and ultimately draw comparisons with the much older, structurally controlled gold deposits of the Archean and Paleoproterozoic.
GEOSCAN ID306460