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• W2521058060 endingPage "139" @default.
• W2521058060 startingPage "123" @default.
• W2521058060 abstract "Iron oxide copper-gold (IOCG) and associated iron-oxide apatite (IOA) styles of metallic mineralization are recognized throughout the Paleoproterozoic Great Bear magmatic zone of the northwest Canadian Shield. The Great Bear magmatic zone was constructed between ca. 1876 and 1855 Ma on top of the older Hottah terrane, which preserves continental arc magmatism that began around ca. 2.0 to 1.97 Ga and continued between ca. 1.93 and 1.89 Ga. The Great Bear represents the final stages of ca. 150 million years of intermittent and pulsed magmatism related to an evolving continental orogenic belt. The preserved geology supports a dramatic geodynamic change in the subduction zone process at ca. 1875 Ma, a key driving mechanism for magma and metal mobilization, and was rapidly followed by a large-scale introduction of felsic-intermediate plutons. The overall tectonic setting is partially constrained from new and previously published geochemical data that show that the volcanic and plutonic rocks are high-K calc-alkaline to shoshonitic in nature (e.g., high K2O, Th/Yb, and Ce/P205). They also have suprasubduction-zone geochemical signatures, including primitive mantle normalized positive Th and negative Nb, P, and Ti anomalies. The data support the primary melts were derived from a GLOSS-modified mantle wedge. Three-dimensional rendering of geophysical datasets suggest that two (of four) preserved surfaces within the upper mantle lithosphere, at 70 to 120 km depths, represent frozen, subducted oceanic slabs, and likely were the drivers for the bulk of Hottah and Great Bear arc magmatism. The older slab is northwest-striking and dips 12° to 15° northeast, whereas the younger is deeper and north-striking, dipping 13° east. The geometry of the surfaces are comparable with 4D modeling, where a subduction zone is temporarily shut down due to plateau collision, and then steps oceanward and re-initiates; there is no need for polarity reversal of the subduction system. This new geometry and the related inferences about process should be the focus of future research in the region, but for the time-being it can be stated that these subduction and collisional processes were the first order control on lithospheric evolution, and therefore metallic mineralization. Overall, the Great Bear magmatic zone IOCG and related mineralization is not comparable to other Proterozoic IOCG belts, such as those in Australia. However, the complexity of mineralization styles, the spatial-temporal relationship between IOA and IOCG mineralization, the suprasubduction zone environment, and a major change in tectonic regime are features similar to Andean-type IOCG mineralization, as well as Cordilleran alkali porphyry Cu-Au deposits. This further establishes the linkages between subduction zone processes and IOCG formation, as well as relationships in the IOCG-porphyry deposit continuum model." @default.
• W2521058060 created "2016-09-30" @default.
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• W2521058060 date "2017-03-01" @default.
• W2521058060 modified "2023-09-26" @default.
• W2521058060 title "A Paleoproterozoic Andean-type iron oxide copper-gold environment, the Great Bear magmatic zone, Northwest Canada" @default.
• W2521058060 cites W1129360814 @default.
• W2521058060 cites W1201402509 @default.
• W2521058060 cites W1588019523 @default.
• W2521058060 cites W1744416065 @default.
• W2521058060 cites W1831713658 @default.
• W2521058060 cites W1853999391 @default.
• W2521058060 cites W1917589268 @default.
• W2521058060 cites W1964504962 @default.
• W2521058060 cites W1965085626 @default.
• W2521058060 cites W1967291731 @default.
• W2521058060 cites W1968245628 @default.
• W2521058060 cites W1968474907 @default.
• W2521058060 cites W1970350244 @default.
• W2521058060 cites W1971363449 @default.
• W2521058060 cites W1972028040 @default.
• W2521058060 cites W1973250535 @default.
• W2521058060 cites W1973573652 @default.
• W2521058060 cites W1979705656 @default.
• W2521058060 cites W1979745670 @default.
• W2521058060 cites W1986633480 @default.
• W2521058060 cites W1991266475 @default.
• W2521058060 cites W1992358796 @default.
• W2521058060 cites W1992599763 @default.
• W2521058060 cites W1994707220 @default.
• W2521058060 cites W1997136268 @default.
• W2521058060 cites W1998707404 @default.
• W2521058060 cites W1999726370 @default.
• W2521058060 cites W2000047758 @default.
• W2521058060 cites W2005724647 @default.
• W2521058060 cites W2005923562 @default.
• W2521058060 cites W2008456126 @default.
• W2521058060 cites W2011922582 @default.
• W2521058060 cites W2014608018 @default.
• W2521058060 cites W2015133379 @default.
• W2521058060 cites W2018840380 @default.
• W2521058060 cites W2023498075 @default.
• W2521058060 cites W2035185400 @default.
• W2521058060 cites W2035956928 @default.
• W2521058060 cites W2037728688 @default.
• W2521058060 cites W2038062109 @default.
• W2521058060 cites W2042280528 @default.
• W2521058060 cites W2049568230 @default.
• W2521058060 cites W2050346999 @default.
• W2521058060 cites W2054138194 @default.
• W2521058060 cites W2059100058 @default.
• W2521058060 cites W2060575995 @default.
• W2521058060 cites W2061312893 @default.
• W2521058060 cites W2062903323 @default.
• W2521058060 cites W2067178512 @default.
• W2521058060 cites W2068457255 @default.
• W2521058060 cites W2069402922 @default.
• W2521058060 cites W2070466214 @default.
• W2521058060 cites W2074876996 @default.
• W2521058060 cites W2075621396 @default.
• W2521058060 cites W2078305653 @default.
• W2521058060 cites W2078944128 @default.
• W2521058060 cites W2081673195 @default.
• W2521058060 cites W2083286618 @default.
• W2521058060 cites W2083808432 @default.
• W2521058060 cites W2084165122 @default.
• W2521058060 cites W2088172667 @default.
• W2521058060 cites W2089868979 @default.
• W2521058060 cites W2092299544 @default.
• W2521058060 cites W2092436156 @default.
• W2521058060 cites W2097871835 @default.
• W2521058060 cites W2106860441 @default.
• W2521058060 cites W2108548131 @default.
• W2521058060 cites W2108971421 @default.
• W2521058060 cites W2116054603 @default.
• W2521058060 cites W2117834512 @default.
• W2521058060 cites W2134950711 @default.
• W2521058060 cites W2135846525 @default.
• W2521058060 cites W2136557397 @default.
• W2521058060 cites W2140166495 @default.
• W2521058060 cites W2144461623 @default.
• W2521058060 cites W2145191782 @default.
• W2521058060 cites W2145819791 @default.
• W2521058060 cites W2149050087 @default.
• W2521058060 cites W2166611562 @default.
• W2521058060 cites W2166944457 @default.
• W2521058060 cites W2167361517 @default.
• W2521058060 cites W2196178012 @default.

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