Molybdenite Re–Os, zircon U–Pb dating and Hf isotopic analysis of the Shuangqing Fe–Pb–Zn–Cu skarn deposit, East Kunlun Mountains, Qinghai Province, China

Xia, Rui; Wang, Changming; Min, Qingwen; Deng, Jun; Carranza, Emmanuel John M.; Li, Wenliang; Xiao-dong, Guo; Ge, Liu; Wan-qiang, YU

doi:10.1016/j.oregeorev.2014.10.024

Cited by 55 publications

(28 citation statements)

References 63 publications

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“…(a) Schematic map showing the major tectonic units of the China Central Orogen of China (modified after Yang et al, ); (b) schematic geological map showing the distribution of granitoids and Triassic Cu–polymetallic deposits in the EKO (modified after Xia et al, ). I = North Kunlun Belt; II = Middle Kunlun Belt; III = South Kunlun Belt; IV = Elashan Belt; NKLF = North Kunlun Fault; CKLF = Central Kunlun Fault; SKLF = South Kunlun Fault; ADTF = Adatan Fault; ELSF = Elashan Fault; WQF = Wenquan Fault; NLGF = Nalingele Fault.…”

Section: Geological Settingmentioning

confidence: 99%

“…Numerous researches have been carried out to understand the Triassic magmatism in the EKO. The voluminous Triassic granitoids in the EKO are interpreted to have formed in a subduction, syn‐collision, or postcollisional setting (Chen, Gehrels, Yin, Zhou, & Huang, ; Huang et al, ; Liu, ; Mo et al, ; Ren et al, ; Shao et al, ; Xia et al, ; Xia, Qing, Wang, & Li, ; Yu, Feng, Zhao, & Li, ). However, few studies have focused on the coupling relationship between Cu mineralization and related geodynamic setting.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Geological Settingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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“…Approximately 35 porphyry–skarn deposits have been discovered and explored in the EKOB, along the East Kunlun Fault (e.g., the Hutouya Cu–Pb–Zn skarn, Kendekeke Fe skarn, Yemaquan Fe skarn, and Yazigou porphyry Cu–Mo; Figure c). Previous published mineralization ages show that most of these deposits are associated with Triassic magmatism (Xia, Wang, Qing, Li, et al, ; Xia, Wang, Qing, Deng, et al, ). The genesis of ore‐forming granitoids related to the porphyry and skarn deposits in EKOB remains enigmatic due to the limited petrologic and geochemical studies of the granites.…”

Section: Introductionmentioning

confidence: 98%

“…The genesis of ore‐forming granitoids related to the porphyry and skarn deposits in EKOB remains enigmatic due to the limited petrologic and geochemical studies of the granites. Some authors suggest that the ore‐related granitoids belong to subduction‐related volcanic arc granite (Xia, Wang, Qing, Deng, et al, ). However, other researchers thought that these Triassic porphyry and skarn deposits are closely related to the postcollisional adakitic granites (Zhan, Gu, Li, Cao, & Kui, ).…”

Section: Introductionmentioning

confidence: 99%

“…Tectonic outline of the (a) Qinghai‐Tibetan Plateau and (b) East Kunlun Orogenic Belt and (c) a simplified geological map of the East Kunlun Orogenic Belt showing the locations and ore‐forming ages of major porphyry–skarn deposits (modified after Xia, Wang, Qing, Deng, et al, ; Zhao & Cawood, ). Names of the numbered deposits: 1 = Kendekeke Fe; 2 = Yemaquan Fe; 3 = Galingge Fe; 4 = Tawenchahan Fe–Cu; 5 = Nalinggeleihe Fe; 6 = Hutouya Cu–Pb–Zn; 7 = Kaerqueka Fe–Cu–Pb–Zn; 8 = Suolajier Cu–Mo; 9 = Jingren‐Yingqinggou Cu–Mo; 10 = Sijiaoyang Pb–Zn; 11 = Yazigou Cu–Mo; 12 = Yelasaitong Cu; 13 = Wulanwuzhuer Cu; 14 = Haisi Pb–Zn; 15 = Shuangqing Fe; 16 = Nangetan Fe; 17 = Baishiya Fe; 18 = Balugou Cu; 19 = Lalingzhaohuo Mo–Fe–Pb–Zn; 20 = Xiadeboli Cu–Mo; 21 = Tuoketuo Cu–Au–Mo; 22 = Qingshuihedong Cu–Mo; 23 = Hongshuihedong Cu–Mo; 24 = Sansegou Cu; 25 = Aikengdeleisite Mo–Cu; 26 = Xueshanfeng Cu; 27 = Dongdatan Cu; 28 = Gakehe Cu–Ag; 29 = Shiduolong Mo–Pb–Zn; 30 = Saishitang Cu–Pb–Zn; 31 = Jiadanggeng Cu–Mo; 32 = Harizha Cu–Mo; 33 = Suolagou Cu; 34 = Rilonggou Sn; and 35 = Tongyegou Cu–Au [Colour figure can be viewed at wileyonlinelibrary.com]…”

Section: Introductionmentioning

confidence: 99%

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Petrogenesis and tectonic setting of the Shiduolong skarn Pb–Zn deposit in the East Kunlun Orogenic Belt: Constraints from whole‐rock geochemical, zircon U–Pb and Hf isotope analyses

et al. 2017

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The Shiduolong Pb–Zn deposit, located in the East Kunlun Orogenic Belt, is a medium‐scale skarn deposit (0.4 Mt metal reserves with a grade of 1.46% Pb and 4.38% Zn). The mineralization occurs along the contact zone between Carboniferous marbles and Triassic quartz diorite and granodiorite. Zircon LA‐ICP‐MS dating indicates that the Shiduolong quartz diorite is coeval with the granodiorite (245 Ma). Whole‐rock geochemical analysis shows that both phases are high‐K calc‐alkaline metaluminous (A/CNK < 1) I‐type granites with similar rare earth (REE) element contents and (La/Yb)N values, indicating that they formed via crystal fractionation from a common parental magma. However, the granodiorite has higher SiO2 contents, lower total Fe2O3, TiO2, MgO, Sr, and Ba contents, and more negative Eu anomalies than the quartz diorites, suggesting that the granodiorite experienced stronger fractional crystallization during magmatic evolution. The zircon εHf(t) values of the quartz diorite range from −3.3 to 1.6. The two‐stage model ages (TDM2) vary from 1,175 to 1,487 Ma. Hf isotope data indicate that the magma of the quartz diorite was mainly derived from partial melting of Mesoproterozoic lower crustal materials with contributions from mantle‐derived magmas. Combined with the regional tectonic and magmatic activities, we propose that the Shiduolong Pb–Zn deposit might have formed during the hydrothermal event associated with the release of magmatic water from the granodiorite‐quartz diorite intrusions, which were generated by the subduction of the Paleo‐Tethys oceanic slab in the Early Triassic.

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Origin of the Late Permian gabbros and Middle Triassic granodiorites and their mafic microgranular enclaves from the Eastern Kunlun Orogen Belt: Implications for the subduction of the Palaeo‐Tethys Ocean and continent–continent collision

et al. 2018

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The geodynamic evolution of the Eastern Kunlun Orogen Belt (EKOB) during the late Palaeozoic-Early Mesozoic remains controversial. Here, we present new zircon U-Pb, element geochemical, and Sr-Nd-Hf isotopic data for the Kaerqueka gabbros, granodiorites, and their mafic microgranular enclaves (MMEs) in the Qiman Tahg area of Qinghai Province (QTQP), western EKOB, with a view to constrain their petrogenesis and tectonic setting. New LA-ICP-MS zircon U-Pb ages indicate that the Kaerqueka gabbro, granodiorite, and its MMEs were emplaced at 257 ± 2, 244 ± 1, and 245-244 Ma, respectively. Based on our new ages and published data, three major episodes of magmatism (ca. 263-249, 247-240, and 237-211 Ma) during the Late Permian-Triassic are recognized in the EKOB. The gabbros are characterized by low SiO 2 concentrations and are potassic with high K 2 O contents and K 2 O/Na 2 O ratios. They are enriched in light rare earth elements (LREEs) and large-ion lithophile elements (LILEs) and have ( 87 Sr/ 86 Sr) i of 0.70737-0.70851, εNd (t) of −2.8 to −2.7 and εHf (t) of +0.7 to +2.9, indicating that the gabbros were derived from an enriched lithospheric mantle which was affected by slab-derived fluids or melts. The MMEs and host granodiorites are enriched in LREEs and depleted in high-field-strength elements and have ( 87 Sr/ 86 Sr) i of 0.71090-0.71129, εNd (t) of −6.58 to −5.21, and εHf (t) of −5.3 to −1.8. Indistinguishable crystallization age, trace element pattern and isotopic compositions between the MMEs and host granodiorites indicate that they are cogenetic and were dominantly originated from the partial melting of Mesoproterozoic juvenile mafic lower crust. Combined with our new results and published geological, geochronological, and geochemical data, we propose that the subduction of the Palaeo-Tethyan Ocean lasted from Late Permian to Early Triassic, and that the onset of the collision mostly occurred during the Middle Triassic in the EKOB.

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Molybdenite Re–Os, zircon U–Pb dating and Hf isotopic analysis of the Shuangqing Fe–Pb–Zn–Cu skarn deposit, East Kunlun Mountains, Qinghai Province, China

Cited by 55 publications

References 63 publications

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

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

Petrogenesis and tectonic setting of the Shiduolong skarn Pb–Zn deposit in the East Kunlun Orogenic Belt: Constraints from whole‐rock geochemical, zircon U–Pb and Hf isotope analyses

Origin of the Late Permian gabbros and Middle Triassic granodiorites and their mafic microgranular enclaves from the Eastern Kunlun Orogen Belt: Implications for the subduction of the Palaeo‐Tethys Ocean and continent–continent collision

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