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• W2950112536 endingPage "102975" @default.
• W2950112536 startingPage "102975" @default.
• W2950112536 abstract "The Archean Eon was the most important period for the genesis of gold deposits with approximately 60% of the world’s gold depositing before 2500 Ma, and orogenic gold is the most common type of Archean gold deposit, accounting for 18% of the global gold production. However, genetic models for these deposits have remained controversial. After decades of investigation of field relationships, structural geology, igneous and metamorphic petrology, mineralogy, geochronology and major-, trace- and isotope geochemistry, most of the hypotheses that had been advocated for the origin of these deposits were negated but two have remained: the origin of the fluids which deposited the gold may be metamorphic or magmatic. The first argument for a magmatic origin of the fluids has been the spatial association of the gold deposits with intrusive rocks and the most efficient argument against the magmatic model has been the lack of documentation for the temporal association of the intrusions and the mineralization. On the other hand, the main evidence for a metamorphic origin of these deposits has been a lack of associated intrusive rocks, as the evidence that the ore fluid was metamorphic was usually supported by the failure of all other models. Four Archean gold deposits from the Wawa-Abitibi Subprovince of the Superior, Canada, which are spatially and temporally associated with magmatic rocks, are here investigated. Late-tectonic magmatic intrusions of intermediate compositions and high-K calc-alkaline to alkaline affinity are often associated with Archean gold deposits in the Superior and this association is often accompanied by dykes of calc-alkaline lamprophyres. Interestingly, some of these stocks were interpreted to have evolved from lamprophyric magmas, and lamprophyres, like syenites, commonly host hydrothermal and sometimes also magmatic carbonates. Duquesne and Canadian Malartic gold mines are examples of Archean gold deposits associated with syenitic/monzonitic intrusions and calc-alkaline lamprophyres. Furthermore, syenites are commonly found in association with carbonatites, and the association is known to host significant concentrations of gold at Lac Shortt gold mine and Dolodau gold deposit, Canada, which are examples of Archean gold deposits associated with carbonatites and syenites. To our knowledge, there is only one world occurrence of co-magmatic syenites, carbonatites, and lamprophyres with gold, at Lac Shortt, Canada. This study reports new trace elements concentrations, stable (δ13C, δ18O) and 87Sr/86Sr isotope ratios for mainly hydrothermal, but also some magmatic carbonates hosted in carbonatites, lamprophyres, syenites and the related mineralization from Duquesne, Dolodau, Lac Shortt and Canadian Malartic gold deposits. The characteristics of these four deposits which allows arguing that they are genetically related to magmatic-hydrothermal activity are presented and followed by geochemical results which show that the concentration of Sr in carbonates is inversely proportional to their 87Sr/86Sr ratios, and seen as three distinct populations on Sr/Mn vs Mn and Sr//Ba vs Ba plots. This suggests that the Archean sub-continental depleted but metasomatized mantle was the host of a regional-scale, high Sr fluid reservoir and that the metasomatized lower- and upper-continental crust hosted similar-sized fluid reservoirs of medium and low Sr concentrations, respectively. Carbonatite-syenite-related Lac Shortt and Dolodau gold deposits have carbonates with high Sr/Mn vs Mn and Sr/Ba vs Ba, as well as depleted mantle-like 87Sr/86Sr and high REE contents, suggesting that the magmatic-hydrothermal systems were rooted in a carbonatized, metasomatized, sub-continental depleted mantle. By contrast, syenite-lamprophyre and non-carbonatite-related Duquesne and Canadian Malartic gold deposits hosted carbonates with medium- to low Sr/Mn vs Mn and Sr/Ba vs Ba, and higher 87Sr/86Sr values, pointing toward the contribution of lower- and upper crustal fluids. At non-carbonatite-related syenite-hosted gold deposits, fluids recycled into the mantle would have triggered the partial melting of a metasomatized, non-carbonatized mantle and this melt would have evolved towards syenitic/monzonitic compositions and liberated alkali-bearing hydrothermal fluids. Carbon and oxygen isotopes importantly show that ore-related carbonates from the four intrusion-related gold deposits plot within a limited range of δ13C – δ18O values. An extensive compilation of carbonate δ13C and δ18O values does not infirm that carbonates from Archean intrusion-related gold deposits tend to plot within the ‘IRGD’ box, and suggests that those that plot outside the ‘IRGD’ box appear to originate from pure metamorphic orogenic gold deposits. Nevertheless, more work is required before this IRGD box can be confirmed, which should impact the prospectivity of Archean gold deposits." @default.
• W2950112536 created "2019-06-27" @default.
• W2950112536 creator A5022128109 @default.
• W2950112536 date "2019-08-01" @default.
• W2950112536 modified "2023-09-26" @default.
• W2950112536 title "Sources of fluids in Archean hydrothermal stockwork-disseminated gold deposits of Abitibi, Canada: Insights from Duquesne, Dolodau, Lac Shortt and Canadian Malartic" @default.
• W2950112536 cites W1640775606 @default.
• W2950112536 cites W1968623321 @default.
• W2950112536 cites W1969859799 @default.
• W2950112536 cites W1975988467 @default.
• W2950112536 cites W1978329266 @default.
• W2950112536 cites W1980308624 @default.
• W2950112536 cites W1984773925 @default.
• W2950112536 cites W1985827600 @default.
• W2950112536 cites W1995442541 @default.
• W2950112536 cites W1999154901 @default.
• W2950112536 cites W2001770586 @default.
• W2950112536 cites W2005925547 @default.
• W2950112536 cites W2008667647 @default.
• W2950112536 cites W2011659537 @default.
• W2950112536 cites W2012780089 @default.
• W2950112536 cites W2012958326 @default.
• W2950112536 cites W2015856116 @default.
• W2950112536 cites W2016142604 @default.
• W2950112536 cites W2022128851 @default.
• W2950112536 cites W2023737199 @default.
• W2950112536 cites W2023788781 @default.
• W2950112536 cites W2026455226 @default.
• W2950112536 cites W2028143421 @default.
• W2950112536 cites W2030106053 @default.
• W2950112536 cites W2031377023 @default.
• W2950112536 cites W2032929243 @default.
• W2950112536 cites W2033065007 @default.
• W2950112536 cites W2035026660 @default.
• W2950112536 cites W2036253864 @default.
• W2950112536 cites W2037164603 @default.
• W2950112536 cites W2040788351 @default.
• W2950112536 cites W2041205225 @default.
• W2950112536 cites W2046854104 @default.
• W2950112536 cites W2047392153 @default.
• W2950112536 cites W2051159231 @default.
• W2950112536 cites W2059282628 @default.
• W2950112536 cites W2060810115 @default.
• W2950112536 cites W2066394529 @default.
• W2950112536 cites W2067741813 @default.
• W2950112536 cites W2071217535 @default.
• W2950112536 cites W2073421227 @default.
• W2950112536 cites W2075901285 @default.
• W2950112536 cites W2080048967 @default.
• W2950112536 cites W2081968284 @default.
• W2950112536 cites W2085191160 @default.
• W2950112536 cites W2094699015 @default.
• W2950112536 cites W2108259154 @default.
• W2950112536 cites W2108760108 @default.
• W2950112536 cites W2111053933 @default.
• W2950112536 cites W2115393884 @default.
• W2950112536 cites W2119339013 @default.
• W2950112536 cites W2119352787 @default.
• W2950112536 cites W2120244455 @default.
• W2950112536 cites W2125132033 @default.
• W2950112536 cites W2129095921 @default.
• W2950112536 cites W2131467610 @default.
• W2950112536 cites W2136614986 @default.
• W2950112536 cites W2137314170 @default.
• W2950112536 cites W2143476365 @default.
• W2950112536 cites W2147872152 @default.
• W2950112536 cites W2148992553 @default.
• W2950112536 cites W2150227681 @default.
• W2950112536 cites W2155349595 @default.
• W2950112536 cites W2167456261 @default.
• W2950112536 cites W2167590372 @default.
• W2950112536 cites W2168622143 @default.
• W2950112536 cites W2170189319 @default.
• W2950112536 cites W2171600858 @default.
• W2950112536 cites W2266634018 @default.
• W2950112536 cites W2314534822 @default.
• W2950112536 cites W2318782072 @default.
• W2950112536 cites W2337599051 @default.
• W2950112536 cites W2503040835 @default.
• W2950112536 cites W2576303396 @default.
• W2950112536 cites W2582325523 @default.
• W2950112536 cites W2769755420 @default.
• W2950112536 cites W2769755846 @default.
• W2950112536 cites W286217119 @default.
• W2950112536 cites W2924539119 @default.
• W2950112536 cites W2980558448 @default.
• W2950112536 cites W4238080741 @default.
• W2950112536 cites W2142369152 @default.
• W2950112536 doi "https://doi.org/10.1016/j.oregeorev.2019.102975" @default.
• W2950112536 hasPublicationYear "2019" @default.
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