Paleozoic evolution of the Qimantagh magmatic arcs, Eastern Kunlun Mountains: Constraints from zircon dating of granitoids and modern river sands

Li, Wei; Neubauer, Franz; Liu, Yongjiang; Genser, Johann; Ren, Shoumai; Han, Guilin; Liang, Chenyue

doi:10.1016/j.jseaes.2013.08.030

Cited by 97 publications

(31 citation statements)

References 19 publications

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“…The main metallic minerals are magnetite, sphalerite, galena, pyrite, chalcopyrite, and pyrrhotite. Based on previous studies (e.g., Li et al, 2013a;Song et al, 2010;Zhang, 2012) and our petrographic investigations, three stages of ore deposition during skarnization have been identified. The later stage commonly partially replaced earlier stages.…”

Section: Mineral Paragenetic Sequencementioning

confidence: 54%

“…It can be subdivided into three tectonic zones according to the major faults: North, Middle, and South Kunlun Fault (Fig. 1a) (Jiang et al, 1992;Li et al, 2013a;Meng et al, 2013Meng et al, , 2015Xia et al, 2014;Xu et al, 2014;Yang et al, 1996). The Qimantagh district is located in the northwestern part of the North Zone.…”

Section: Regional Geologymentioning

confidence: 99%

“…Magmatism was very active in the Early Paleozoic (518-420 Ma) and related with the northward subduction of the Qimantagh Ocean (Cui et al, 2011;Li et al, 2013a;Meng et al, 2013Meng et al, , 2015. Accretion/ collision magmatism developed from the start of the Late Silurian (~406 Ma-~350 Ma) and indicated that this district formed part of the collisional orogeny stage (Chen et al, 2006;Li et al, 2013a;Liu et al, 2012).…”

Section: Regional Geologymentioning

confidence: 99%

Section: Regional Geologymentioning

confidence: 99%

“…Accretion/ collision magmatism developed from the start of the Late Silurian (~406 Ma-~350 Ma) and indicated that this district formed part of the collisional orogeny stage (Chen et al, 2006;Li et al, 2013a;Liu et al, 2012). From the Permian to Middle Triassic, abundant granitoids (280 Ma-250 Ma) intruded during this period and were associated with the Paleo-Tethys oceanic basin subducting northward (Deng et al, 2014b;Huang et al, 2014;Li et al, 2001Li et al, , 2013aLi et al, ,2013bMo et al, 2007;QRGST, 1981;Xiong et al, 2013;Yang et al, 1996). The granitoids of Middle Triassic to Early Jurassic indicated the closure of the Paleo-Tethys Ocean and the Eastern Kunlun area entered the intracontinental orogenic stage (Deng et al, 2015b;Guo et al, 1998;Kui et al, 2010;Li et al, 2015c;Mo et al, 2007;Li et al, 2015d;Ding et al, 2015;Hu et al, 2015;Wang et al, 2016).…”

Section: Regional Geologymentioning

confidence: 99%

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Chemical compositions of garnet and clinopyroxene and their genetic significances in Yemaquan skarn iron–copper–zinc deposit, Qimantagh, eastern Kunlun

Zuo

Liu

Jiang

et al. 2015

Journal of Geochemical Exploration

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Section: Mineral Paragenetic Sequencementioning

confidence: 54%

Section: Regional Geologymentioning

confidence: 99%

Section: Regional Geologymentioning

confidence: 99%

Section: Regional Geologymentioning

confidence: 99%

Section: Regional Geologymentioning

confidence: 99%

See 3 more Smart Citations

Chemical compositions of garnet and clinopyroxene and their genetic significances in Yemaquan skarn iron–copper–zinc deposit, Qimantagh, eastern Kunlun

Zuo

Liu

Jiang

et al. 2015

Journal of Geochemical Exploration

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Geological characteristics, metallogenesis, and tectonic setting of porphyry–skarn Cu deposits in East Kunlun Orogen

Wang

Chen

et al. 2018

Geological Journal

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The East Kunlun Orogen (EKO), as the west segment of the Central China Orogen, is the most important Triassic polymetallic metallogenic belt in China. In this paper, we summarize the geological characteristics (stratigraphy, structure, ore‐related plutons, wall rock alteration, and orebodies), ore‐forming fluids and materials, geochronology, and petro‐geochemistry of the representative porphyry–skarn Cu–polymetallic deposits, including the Saishitang, Hutouya, and Kaerqueka deposits in the EKO. The porphyry–skarn Cu deposits in the EKO are mainly distributed in tectonic units of the Qimantagh Belt and the Elashan Belt. Among them, the skarn Cu deposits provide the majority of Cu resources, which mainly occur in the contact zone between the Triassic granitoids and the volcanic–sedimentary rocks (e.g., the Ordovician–Silurian Tanjianshan Group and the Early to Middle Triassic Hongshuichuan Group), and the skarn and orebodies are mainly controlled by interlayer–gliding structures. Ore‐forming fluids of the porphyry Cu deposits are magmatic mixed with meteoric water, whereas the fluids of skarn Cu deposits are mainly of magmatic origin. The higher δ18O (>10‰) of garnet and pyroxene in prograde skarn and wide range of sulphur isotopic compositions (δ34S values from −8.9‰ to 11.0‰) suggest that ore‐forming materials of skarn Cu deposits were partially derived from the country rocks. Based on detailed field investigations, we identified four Cu mineralization types, including veinlet–disseminated Cu (Mo, Au) mineralization occurring within the intrusions, proximal skarn Cu (Fe, Pb, Zn, Au) mineralization, distal skarn Cu mineralization, and distal skarn Pb–Zn (Cu) mineralization. The porphyry–skarn Cu deposits are associated with magmatism that occurred mainly during 235–218 Ma. The ore‐related granitoids are mostly calc‐alkaline I‐type granites, derived from partial melting of the Precambrian basement rocks with various degrees of involvement of mantle components. Combined with the regional tectonic evolution, we conclude that the Cu mineralization in the EKO began with the closure of A'nyemaqen Ocean (~238 Ma) and subsequently culminated in a postcollisional setting (~225 Ma).

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Late Silurian to Late Triassic seamount/oceanic plateau series accretion in Jinshajiang subduction mélange, Central Tibet, SW China

et al. 2019

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The timing of the initial opening and subduction of the Palaeotethyan Ocean is currently highly debated, in particular regarding the Jinshajiang Ocean in the central Tibetan Plateau. This study presents four well‐constrained U–Pb zircon ages (422.4 ± 6.1, 336.4 ± 7.4, 272.3 ± 2.8, and 255.8 ± 3.4 Ma) of mafic blocks in the Jinshajiang Suture. These mafic blocks have a chemical oceanic island basalt (OIB) affinity. These facts, together with previously published data (236 Ma OIBs), may be interpreted as a series of seamounts/oceanic plateaux varying from Late Silurian to Late Triassic, which were accreted early in the subduction–accretion process. An andesite from the Jinshajiang Suture with continental arc characteristics yielded a zircon U–Pb weighted average age of 385.2 ± 6.6 Ma, implying that the subduction initiation may have occurred at least in the Middle Devonian. Our work suggests a long‐lived continuous accretion, which also puts an earlier initial opening time than previously thought. Taking into account the above data and integrated with relevant published information, we favour a long‐lived accretionary process accompanied with seamounts/oceanic plateaux, which provides robust new evidence for subduction‐related continental growth in the central Tibetan Plateau.

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Paleozoic evolution of the Qimantagh magmatic arcs, Eastern Kunlun Mountains: Constraints from zircon dating of granitoids and modern river sands

Cited by 97 publications

References 19 publications

Chemical compositions of garnet and clinopyroxene and their genetic significances in Yemaquan skarn iron–copper–zinc deposit, Qimantagh, eastern Kunlun

Chemical compositions of garnet and clinopyroxene and their genetic significances in Yemaquan skarn iron–copper–zinc deposit, Qimantagh, eastern Kunlun

Geological characteristics, metallogenesis, and tectonic setting of porphyry–skarn Cu deposits in East Kunlun Orogen

Late Silurian to Late Triassic seamount/oceanic plateau series accretion in Jinshajiang subduction mélange, Central Tibet, SW China

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