| Title | Age of magmatism and mineralization at the Star (Sheslay, Copper Creek) copper porphyry prospect: inception of the Late Triassic mineralized arc |
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| Author | Mihalynuk, M G; Zagorevski, A ; Joyce, N L; Creaser, R A |
| Source | British Columbia Ministry of Energy, Mines and Petroleum Resources, Paper 2016-1, 2016 p. 65-75  Open Access |
| Links | Online - En ligne
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| Image |  |
| Year | 2016 |
| Alt Series | Earth Sciences Sector, Contribution Series 20150456 |
| Publisher | British Columbia Ministry of Energy and Mines |
| Document | serial |
| Lang. | English |
| Media | paper |
| File format | pdf |
| Province | British Columbia |
| NTS | 103 |
| Lat/Long WENS | -135.0000 -111.0000 60.0000 48.0000 |
| Subjects | igneous and metamorphic petrology; geochronology; magmatism; magmatic rocks; mineralization; gold; copper; molybdenum; silver; porphyries; uranium lead dating; radiometric dating; Star copper porphyry
prospect; Sheslay copper porphyry prospect; Copper Creek copper porphyry prospect; Mesozoic; Triassic |
| Illustrations | location maps; photographs |
| Program | GEM2: Geo-mapping for Energy and Minerals Western Cordillera, Regional porphyry transitions |
| Released | 2016 01 01 |
| Abstract | Cu-Mo porphyry style mineralization in the vicinity of the Star prospect was likely discovered during construction of the Telegraph Trail in the early 1900's, but it was probably not until circa 1976
that the main Dick Creek zone was discovered. All mineralization has been attributed to the ~20 km2 Kaketsa pluton, ~226 Ma, and related satellite intrusions. Affiliation is borne out by the age of magmatism and mineralization at the main Dick Creek
zone as determined by U-Pb zircon and Re-Os geochronology: 229 ± 3 Ma and 227.2 ±1.0 Ma. Cu-Mo calc-alkalic style porphyry mineralization of this age is not common in the Canadian Cordillera, but Star mineralization broadly similar in style to the
huge Schaft Creek deposit (~222 Ma). However, the Dick Creek zone is significantly older than Schaft Creek, and is perhaps the oldest well-dated Triassic porphyry mineralization in the Canadian Cordillera. It marks inception of porphyry
mineralization in Late Triassic arc |
| Summary | (Plain Language Summary, not published)
This report presents preliminary results and models developed through GEM2 program on volcanic and plutonic rocks in British Columbia. It details the age
and characteristics of magmatic rocks and associated mineralization on the basis of field and laboratory analyses. The results presented herein help progress GEM2 model to ultimately redefine the regional tectonic models of the Cordillera. |
| GEOSCAN ID | 297744 |
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