Re–Os and Sr–Nd–Pb isotope constraints on source of fluids in the Zhifang Mo deposit, Qinling Orogen, China

Deng, Xiao‐Hua; Chen, Yanjing; Santosh, M.; Yao, Jincao; Sun, Yali

doi:10.1016/j.gr.2015.02.020

Cited by 46 publications

(8 citation statements)

References 85 publications

(97 reference statements)

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“…Age data: Mogou pluton (R. Lu et al, ; J. Cao, Ye, Li, Zhang, et al, ; X. He et al, ; this study); Dashimengou Mo deposit (J. H. Li, ; L. W. Wang, ); Huangshuian Mo deposit (J. Cao et al, ; Huang, Hou, Yang, Li, & Xu, ); Qianfanling Mo deposit (Gao et al, ; Gao, Li, Guo, Cheng, & Liu, ); Zhifang Mo deposit (X. H. Deng et al, ); Dianfang Au deposit (K. F. Tang, ); Shanggong Au deposit (S.M. Li, Qu, Li, Li, & Xu, ; Ren et al, 2006; K. F. Tang, ); and Xianglugou Cu deposit (M. Cao et al, ) [Colour figure can be viewed at wileyonlinelibrary.com]…”

Section: Discussionmentioning

confidence: 75%

“…Available age data from multiple methods including molybdenite Re–Os, quartz and sericite Ar‐Ar, K‐feldspar K‐Ar, and garnet Rb‐Sr for the timing of mineralization and associated alteration (e.g., J. Cao et al, ; M. Cao et al, ; X. H. Deng et al, ; Gao et al, , ; K. F. Tang, ), and LA–ICP–MS zircon U–Pb dating for the crystallization age of the Mogou pluton (J. Cao, Ye, Li, Zhang, et al, ; X. He et al, ; R. Lu et al, ) enable us to link the Triassic Mo, Au, and Cu mineralization to the alkaline magmatism (Figure ).…”

Section: Discussionmentioning

confidence: 99%

“…The Qianfanling quartz vein‐type Mo deposit yield an isochron age of 239 ± 13 Ma (Gao et al, ) and a mean age of 235.6 ± 1.5 Ma (Gao et al, ). The Zhifang quartz vein‐type Mo deposits show Re–Os isochron age of 246 ± 5 Ma (X. H. Deng et al, ). The carbonatite‐hosted Huangshuian Mo deposit shows Re–Os isochron ages in the range of 209.5 ± 4.2 and 208.4 ± 3.6 Ma (J. Cao et al, ; Huang et al, ).…”

Section: Discussionmentioning

confidence: 99%

“…In the Xiong'ershan area, several studies have documented Triassic mineralization ages, such as the Zhifang, Qianfanling, Huangshuian, and Dashimengou molybdenum deposits (J. Cao et al, ; X. H. Deng et al, ; Gao et al, ; J. H. Li, ), and Dianfang, Beiling, Shanggong, and Yaogou gold deposits (Chen, Pirajno, & Qi, ; Chen, Pirajno, Qi, Li, & Wang, ). The Zhifang and Qianfanling molybdenum deposits are quartz vein type and are hosted in the Mesoproterozoic Xiong'er Group volcanic rocks (X. H. Deng et al, ; Gao et al, ). The Huangshuian is a large‐sized carbonatite vein‐type molybdenum deposit, where the orebodies occur as quartz–calcite carbonatite dykes in the Taihua Group TTG gneisses (J. Cao et al, ).…”

Section: Geological Settingmentioning

confidence: 99%

“…The Xiong'ershan area exposes several Mesozoic granitic plutons and hosts numerous Au, Mo, Pb‐Zn‐Ag, and Cu deposits (Figure ), and this region ranks as the third largest gold concentration in China, following the Jiaodong and Xiaoqinling areas (J. Deng, Gong, Wang, Carranza, & Santosh, ; Fan, Hu, Wilde, Yang, & Jin, ; C. M. Wang et al, ). Available geochronological data suggest that the Mesozoic magmatic event and mineralization mainly occurred in two periods: (a) Triassic (255–208 Ma) syenite magmatism represented by the Mogou pluton and several Au, Mo, and Cu deposits (e.g., M. Cao et al, ; X. H. Deng, Chen, Santosh, Yao, & Sun, ; Gao, Mao, Ye, & Li, ; Gao, Ye, Mao, & Li, ; X. He et al, ) and (b) Middle Jurassic to Early Cretaceous (160–110 Ma) granitic magmatism and numerous Au, Mo, and Pb‐Zn‐Ag deposits (e.g., Bao, Sun, Zartman, Yao, & Gao, ; Mao et al, ; K. F. Tang, ; Tian et al, ).…”

Section: Introductionmentioning

confidence: 99%

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Triassic alkaline magmatism and mineralization in the Xiong'ershan area, East Qinling, China

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The Qinling orogenic belt is a complex subduction-accretion-collision orogen that welded the North China Craton and the Yangtze Craton during the final continental collision in the Triassic. The Xiong'ershan area, located in east Qinling, exposes a typical Triassic syenite pluton and several contemporaneous Mo, Au, and Cu deposits. The aegirine-augite syenites and syenites from the Mogou pluton are characterized by alkalic to peralkalic (total alkali Na 2 O + K 2 O = 13.95-14.63 wt.%, CaO = 0.06-2.87 wt.%), and shoshonitic features (K 2 O = 11.86-14.34 wt.%). Zircon LA-ICP-MS U-Pb dating of the aegirine-augite syenite and syenite yield emplacement ages of 232.5 ± 0.6 and 221.8 ± 0.7 Ma, indicating multiple pulses of magmatism. Evidence from zircon Hf isotopes; occurrence of mafic microgranular enclaves; heterogeneous peralkaline composition; and wide ranges of MgO, Ni, and other trace elements suggest that the parental magma was mainly sourced from partial melting of Archean to Paleoproterozoic crustal sources, mixed with juvenile mantle-derived mafic magmas. The Mogou pluton was probably emplaced in the tectonic transition from syn-collision to post-collision settings and accompanying slab break-off process, from the commencement of collision at approximately 245 Ma and post-collisional extension at approximately 210 Ma. Gold, molybdenum, and copper deposits formed during the interval of 255-208 Ma, and the close temporal and spatial relationship between these Triassic polymetallic deposits and the Mogou alkaline pluton invokes a genetic linkage. The heat source for magmatismand related metallogeny is correlated to a hot upwelling asthenospheric mantle that caused partial melting of the Archean to Paleoproterozoic crustal basement, resulting in magma mixing between the two end-members.

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