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TitleAre there elephants hiding in the Jurassic of Yukon? A tectonomagmatic perspective on porphyry prospectivity
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorChapman, J BORCID logo
SourceGeological Survey of Canada, Scientific Presentation 30, 2015., Open Access logo Open Access
PublisherNatural Resources Canada
MeetingGSA annual meeting 2014; Vancouver; CA; October 21, 2014
Mediaon-line; digital
File formatpdf
NTS105D; 105E; 105L; 105M/01; 105M/02; 105M/03; 105M/04; 115A; 115C; 115G; 115H; 115I; 115J; 115O/01; 115O/02; 115P/01; 115P/02; 115P/03; 115P/04
AreaYukon River; Carmacks; Nisling River
Lat/Long WENS-139.0000 -134.0000 63.2500 60.5000
Subjectstectonics; geochronology; igneous and metamorphic petrology; tectonic interpretations; tectonic setting; tectonic environments; magmatism; magmatic deposits; igneous rocks; porphyry deposits; porphyries; plutons; plutonic rocks; granites; sampling methods; cesium; Minto Mine; Mesozoic; Jurassic
Illustrationslocation maps; photographs; plots; ternary diagrams
ProgramGEM2: Geo-mapping for Energy and Minerals Western Cordillera, Regional porphyry transitions
Released2015 06 19
Summary(Plain Language Summary, not published)
This publication presents bulk geochemistry plots for granite-like rock samples taken from within central Yukon. The samples all date to the late Triassic (200-205 million years ago) and early Jurassic (180-200 million years ago) periods. Granite-like rocks of similar age within British Columbia are associated with a very large proportion of Canada's economic copper and molybdenum ore deposits, and significant quantities of gold. However, within Yukon very little mineralization has been positively identified, and only one operating mine is hosted within these rocks. This presentation demonstrates that Triassic to Jurassic rocks within Yukon have chemical signatures that would normally be associated with such mineral endowment, but suggests that they may have formed as a deeper level within the Earth than those seen in BC.

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