The relationship of mantle-derived fluids to gold metallogenesis in the Jiaodong Peninsula: Evidence from D–O–C–S isotope systematics

Mao, Jingwen; Wang, Yitian; Li, Houmin; Pirajno, Franco; Zhang, Changqing; Wang, Ruiting

doi:10.1016/j.oregeorev.2007.01.003

Cited by 226 publications

(86 citation statements)

References 44 publications

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“…They are also consistent with δ 34 S values of calc-alkaline and alkaline intrusions within the NCC (2.5‰-4.6‰ with a mean value of 3.6‰; Nie et al, 2004). These δ 34 S values differ from those typically found within orogenic gold systems, such as granite-hosted orogenic gold deposits within the east Shandong (or Jiaodong) area of the NCC (6.8‰-9.3‰; Qiu et al, 2002;Mao et al, 2008), at the Hunt Mine at Kambalda in the Yilgarn Craton of Western Australia (3.8‰-7.2‰, Yang et al, 2012), at the Sawayaerdun gold deposit in the Tianshan area of northwest China (−1.8‰ to 0.9‰; Chen et al, 2012), and within the Juneau gold belt of southeastern Alaska (− 17.8‰ to 1.2‰; Goldfarb et al, 1991). These values are consistent with a deep-seated source of sulfur that originated from either metamorphic rocks or igneous intrusions (Ohmoto and Rye, 1979;Ohmoto, 1986).…”

supporting

confidence: 79%

Electron microprobe analyses of ore minerals and H–O, S isotope geochemistry of the Yuerya gold deposit, eastern Hebei, China: Implications for ore genesis and mineralization

Kong

Yin

et al. 2015

Ore Geology Reviews

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supporting

confidence: 79%

Electron microprobe analyses of ore minerals and H–O, S isotope geochemistry of the Yuerya gold deposit, eastern Hebei, China: Implications for ore genesis and mineralization

Kong

Yin

et al. 2015

Ore Geology Reviews

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“…However, Garofalo et al (2014) also reported that fluids from all 5 deposits were consistently enriched in Au, B, As and Sb above lower crustal values, with B the third most abundant element in solution (up to 2200 µg/g), after Na and K. This common occurrence of B as an integral constituent of orogenic ore forming fluids, is reflected in the presence of tourmaline as a common gangue mineral in orogenic gold systems globally and across time (e.g. Olivo et al, 2002;Batemen and Bierlein, 2007;Vial et al, 2007;Krienitz et al, 2008;Mao et al, 2008;Klein and Fuzikawa, 2010;Bark and Weihed, 2012;Kouhestani et al, 2014;Klein et al, 2015).…”

Section: Implications For Fluid and Metal Sources In Orogenic Gold Dementioning

confidence: 99%

Discriminating fluid source regions in orogenic gold deposits using B-isotopes

Lambert-Smith

Rocholl

Treloar

et al. 2016

Geochimica et Cosmochimica Acta

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The genesis of orogenic gold deposits is commonly linked to hydrothermal ore fluids derived from metamorphic devolatilisation reactions. However, there is considerable debate as to the ultimate source of these fluids and the metals they transport. Tourmaline is a common gangue mineral in orogenic gold deposits. It is stable over a very wide P-T range, demonstrates limited volume diffusion of major and trace elements and is the main host of B in most rock types. We have used texturally resolved B-isotope analysis

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“…Stable isotope and noble gas geochemistry provides evidence that gold and oreforming fluids were largely from mantle-and crust-derived magmas (Mao et al, 2008;Li J W et al, 2012a), contrasting with orogenic gold deposits of other cratons, which precipitated from metamorphism-related fluids. Some gold deposits in the northern and southern margins of the NCC were formed in the Late Triassic and Early Jurassic (e.g., Jinchangyu, Jiapigou, Shanggong, Dianfang), and are interpreted to have resulted from tectonic processes of the Qinling orogen to the south and the central Asian orogen to the north of the NCC.…”

mentioning

confidence: 99%

Decratonic gold deposits

Zhu

Fan

et al. 2015

Sci. China Earth Sci.

313

137

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The North China Craton (NCC) hosts numerous gold deposits and is known as the most gold-productive region of China. The gold deposits were mostly formed within a few million years in the Early Cretaceous (130-120 Ma), coeval with widespread occurrences of bimodal magmatism, rift basins and metamorphic core complexes that marked the peak of lithospheric thinning and destruction of the NCC. Stable isotope data and geological evidence indicate that ore-forming fluids and other components were largely exsolved from cooling magma and/or derived from mantle degassing during the period of lithospheric extension. Gold mineralization in the NCC contrasts strikingly with that of other cratons where gold ore-forming fluids were sourced mostly from metamorphic devolatization in compressional or transpressional regimes. In this paper, we present a summary and discussion on time-space distribution and ore genesis of gold deposits in the NCC in the context of the timing, spatial variation, and decratonic processes. Compared with orogenic gold deposits in other cratonic blocks, the Early Cretaceous gold deposits in the NCC are quite distinct in that they were deposited from magma-derived fluids under extensional settings and associated closely with destruction of cratonic lithosphere. We argue that Early Cretaceous gold deposits in the NCC cannot be classified as orogenic gold deposits as previously suggested, rather, they are a new type of gold deposits, termed as "decratonic gold deposits" in this study. The westward subduction of the paleo-West Pacific plate (the Izanagi plate) beneath the eastern China continent gave rise to an optimal tectonic setting for large-scale gold mineralization in the Early Cretaceous. Dehydration of the subducted and stagnant slab in the mantle transition zone led to continuous hydration and considerable metasomatism of the mantle wedge beneath the NCC. As a consequence, the refractory mantle became oxidized and highly enriched in large ion lithophile elements and chalcophile elements (e.g., Cu, Au, Ag and Te). Partial melting of such a mantle would have produced voluminous hydrous, Au-and S-bearing basaltic magma, which, together with crust-derived melts induced by underplating of basaltic magma, served as an important source for ore-forming fluids. It is suggested that the Eocene Carlin-type gold deposits in Nevada, occurring geologically in the deformed western margin of the North America Craton, are comparable with the Early Cretaceous gold deposits of the NCC because they share similar tectonic settings and auriferous fluids. The NCC gold deposits are characterized by gold-bearing quartz veins in the Archean amphibolite facies rocks, whereas the Nevada gold deposits are featured by fine-grained sulfide dissemination in Paleozoic marine sedimentary rocks. Their main differences in gold mineralization are the different host rocks, ore-controlling structures, and ore-forming depth. The similar tectonic setting and ore-forming fluid source, however, indicate that the Carlin-type gold deposits in ...

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The relationship of mantle-derived fluids to gold metallogenesis in the Jiaodong Peninsula: Evidence from D–O–C–S isotope systematics

Cited by 226 publications

References 44 publications

Electron microprobe analyses of ore minerals and H–O, S isotope geochemistry of the Yuerya gold deposit, eastern Hebei, China: Implications for ore genesis and mineralization

Electron microprobe analyses of ore minerals and H–O, S isotope geochemistry of the Yuerya gold deposit, eastern Hebei, China: Implications for ore genesis and mineralization

Discriminating fluid source regions in orogenic gold deposits using B-isotopes

Decratonic gold deposits

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