Petrogenesis of the Late Jurassic peraluminous biotite granites and muscovite-bearing granites in SE China: geochronological, elemental and Sr–Nd–O–Hf isotopic constraints

Jiang, Yao-Hui; Zhu, Shining

doi:10.1007/s00410-017-1422-5

Cited by 37 publications

(16 citation statements)

References 71 publications

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“…10). Taken together, the geochemical signatures suggest that the Kuchahe intrusion can be classified as an S-type granite (Barbarin, 1996;Sylvester, 1998;Jiang and Zhu, 2017). Several models have been formulated with regard to the origin of peraluminous S-type magmas:…”

Section: Kuchahe Intrusionmentioning

confidence: 99%

“…(3) The consensus view is that strongly peraluminous granitic magmas are most easily produced by partial melting of metasedimentary rocks (e.g., Barbarin, 1996;Sylvester, 1998;Jiang et al, 2011;Jiang and Zhu, 2017). The initial Nd-Hf isotopic data of the Kuchahe samples also plot in the field of continental sediments (Fig.…”

Section: Kuchahe Intrusionmentioning

confidence: 99%

“…Similarly, MPGs from the Qinling orogen (central China) and the Western Kunlun orogen (NW China) were emplaced during a syncollisional orogenic event that temporally followed arc magmatism (Jiang et al, 2010(Jiang et al, , 2013. Recently, Jiang et al (2011) and Jiang and Zhu (2017) identified four late Mesozoic MPGs (Ehu, Xinfengjie, Jiangbei, and Dadu intrusions) from the South China block, which were generated in a back-arc or arc setting associated with the paleo-Pacific subduction, indicating that MPGs are not restricted to orogenic belts. As mentioned above, the Kuchahe intrusion was formed by biotite-dehydration melting of a metapelitic source at relatively high temperature (760-830 °C).…”

Section: Tectonic Environmentmentioning

confidence: 99%

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Petrogenesis of mid-Neoproterozoic (ca. 750 Ma) mafic and felsic intrusions in the Ailao Shan–Red River belt: Geochemical constraints on the paleogeographic position of the South China block

Liu

Tan

et al. 2019

Lithosphere

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Abundant mid-Neoproterozoic magmatic rocks are exposed in the western Yangtze block, a part of the South China block. Currently, based on contrasting interpretations of their origin, two competing reconstruction models, the internal model and the external model, have been formulated to constrain the paleogeographic position of the South China block in Rodinia. In this study, we examined 17 representative samples from three intrusions (Kuchahe, Leidashu, and Qizanmi) within the Ailao Shan-Red River belt, located in the southwestern Yangtze block. Laser-ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) zircon U-Pb dating suggests that they were emplaced during the mid-Neoproterozoic (ca. 750 Ma). The Kuchahe and Leidashu intrusions share geochemical characteristics of S-type and A 2-type rocks, respectively. Elemental and isotopic data suggest that the Kuchahe intrusion was derived by biotite-dehydration melting of a metapelitic source, whereas the Leidashu intrusion was produced by partial melting of earlier Neoproterozoic granodiorites in the middle crust (~15 km), with mixing of basaltic magmas. The Qizanmi intrusion is composed of hornblende gabbro and was likely derived by partial melting of a shallow and enriched lithospheric mantle source modified by slab-released fluids, with accumulation of plagioclase and fractionation of mafic minerals. The three intrusions were emplaced in a back-arc setting, in response to the roll-back of a subducted slab rather than mantle plume activity. The mid-Neoproterozoic (ca. 750 Ma) subduction process argues against the South China block occupying an internal setting in Rodinia, which was finally assembled before 0.9 Ga.

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Section: Kuchahe Intrusionmentioning

confidence: 99%

Section: Kuchahe Intrusionmentioning

confidence: 99%

Section: Tectonic Environmentmentioning

confidence: 99%

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Petrogenesis of mid-Neoproterozoic (ca. 750 Ma) mafic and felsic intrusions in the Ailao Shan–Red River belt: Geochemical constraints on the paleogeographic position of the South China block

Liu

Tan

et al. 2019

Lithosphere

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“…South China is characterized by widely exposed granites and intensely developed mineral resources of Mesozoic age (Figure ; Cao, Wu, et al, ; Hua et al, ; Jiang & Zhu, ; Li, Li, & Li, ; Li, Myint, et al, ; Li, Watanabe, & Yonezu, ; Mao, Cheng, Chen, & Pirajno, ; Wang et al, ). The Nanling Range in the central part of South China hosts an economically important W–Sn polymetallic ore belt (Figure ; Shu, Wang, Sun, Xu, & Dai, ; Zhu et al, ) that contains more than 60% of the world's total W reserves and about 20% of the Sn reserves (Li et al, ; Mao et al, ; Sheng et al, ).…”

Section: Introductionmentioning

confidence: 99%

“…Although the behaviour of the Lu-Hf isotope system in hydrothermal zircons has been less studied, when combined with U-Pb dating and trace element data, it may provide substantial information concerning the sources and physico-chemical evolution of precipitating fluids and their relationship to hydrothermal alteration and ore mineralization processes (e.g., Kozlik, Raith, & Gerdes, 2016;Valley, Fisher, Hanchar, Lam, & Tubrett, 2010). South China is characterized by widely exposed granites and intensely developed mineral resources of Mesozoic age (Figure 1; Hua et al, 2003;Jiang & Zhu, 2017;Li, Li, & Li, 2007;Li, Myint, et al, 2018;Li, Watanabe, & Yonezu, 2014b;Mao, Cheng, Chen, & Pirajno, 2013;Wang et al, 2007). The Nanling Range in the central part of South China hosts an economically important W-Sn polymetallic ore belt (Figure 1; Shu, Wang, Sun, Xu, & Dai, 2011;Zhu et al, 2009) that contains more than 60% of the world's total W reserves and about 20% of the Sn reserves Mao et al, 2013;Sheng et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Mesozoic multi‐stage W–Sn polymetallic mineralization in the Nanling Range, South China: An example from the Dengfuxian–Xitian ore field

Sun

Algeo

et al. 2018

Geological Journal

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The Dengfuxian and Xitian ore fields, located in the central Nanling Range of South China, are characterized by multi‐stage W–Sn polymetallic mineralization. In this study, whole‐rock and zircon compositions in altered granites from four typical deposits in these ore fields (i.e., Dalong Pb–Zn, Xiangdong W, Gaolong fluorite, and Shaiheling Sn–Pb–Zn) were studied to constrain their fluid chemistry and mineralization history. Compared to unaltered granites at Dengfuxian and Xitian, these fluid‐altered granites are characterized by more variable SiO2 (64.2–78.4%) and lower TiO2 (0.02–0.12%), CaO (0.25–1.2%), and Na2O (0.31–2.6%) concentrations, lower ΣREE (87–156 ppm), and higher Zr/Hf (11.1–31.6) and Y/Ho (31.1–53.4) ratios, suggesting intense F‐rich fluid metasomatism. Zircon cathodoluminescence (CL), transmitted light and back‐scattered electron (BSE) imaging, laser ablation multi‐collector inductively coupled plasma mass spectrometry (LA‐MC‐ICP‐MS) trace‐element analysis, U–Pb dating, and Hf isotopes revealed a sequence of three W–Sn polymetallic mineralization stages: a Triassic stage (~220 Ma), a Jurassic stage (~150 Ma), and a Cretaceous stage (~80 Ma). The Triassic episode was associated with a highly fractionated granitic magma derived from the lower crust and contaminated by basement rocks; the magmatic fluid was affected by a high 176Hf/177Hf component from the ~770‐Ma basement and probably precipitated under high F and high fO2 conditions. The Jurassic episode was related to mantle–crust interaction and resulted in large‐scale W–Sn mineralization at decreased fO2. The Cretaceous episode was marked by Sn mineralization in a lithospheric extensional setting. We infer that basement rocks were the major source of metals for the world‐class W–Sn ore deposits in the Nanling Range of South China. This study also demonstrates that whole‐rock geochemistry of hydrothermally altered granites in combination with Lu–Hf isotopic, U–Pb dating, and trace element analyses of magmatic and hydrothermal zircons can be a useful approach to recognition of multi‐stage magmatic and mineralization processes.

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Late Jurassic Wenjiaping high Sr/Y granite: A product of partial melting of the Precambrian basement rocks trigged by lithospheric extension in the Songpan–Garzê fold belt, SW China

Liu

Zhou

et al. 2022

Geological Journal

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The Wenjiaping granite, as one of the few Late Jurassic granites in the Songpan-Garzê fold belt (SGFB), can provide an important clue for comprehensively recognizing the tectonic evolution and mineralization of this belt. In this contribution, we present new age and geochemical data for this pluton to better constrain its petrogenesis and discuss the tectonic and metallogenic implications. LA-ICP-MS zircon U-Pb dating shows that the Wenjiaping pluton was emplaced at ~159 Ma. The granite contains minor amphibole, and exhibits slightly peraluminous characteristics (A/CNK = 1.03-1.10) and lower initial Sr-Pb isotope ratios than those of the Liwu Group, which excludes the possibility that the Wenjiaping granite was derived from partial melting of the metasedimentary rock-dominated Liwu Group as previously suggested. Significantly, high Sr/Y (40.93-54.30), La N /Yb N (39.64-56.64), and K 2 O/ NaO (0.77-1.11) ratios, low MgO (0.47%-0.86%) and Cr (25.1-41.3 ppm) contents, and relatively enriched Sr-Nd-Pb-Hf isotope compositions of the Wenjiaping granite are comparable to those of the Late Triassic adakitic rocks in the SGFB, indicating that they probably share a similar source. Combined with previous researches, we propose that large-scale detachment of the Jianglang dome caused by post-collisional lithospheric extension in the SGFB-induced decompressional partial melting of the Precambrian basement rocks can account for the generation of the Late Jurassic Wenjiaping pluton. In addition, our results also suggest that the Wenjiaping pluton probably cannot supply abundant metal elements for the Liwu-type Cu-polymetallic deposits in the Jianglang dome, SGFB.

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Petrogenesis of the Late Jurassic peraluminous biotite granites and muscovite-bearing granites in SE China: geochronological, elemental and Sr–Nd–O–Hf isotopic constraints

Cited by 37 publications

References 71 publications

Petrogenesis of mid-Neoproterozoic (ca. 750 Ma) mafic and felsic intrusions in the Ailao Shan–Red River belt: Geochemical constraints on the paleogeographic position of the South China block

Petrogenesis of mid-Neoproterozoic (ca. 750 Ma) mafic and felsic intrusions in the Ailao Shan–Red River belt: Geochemical constraints on the paleogeographic position of the South China block

Mesozoic multi‐stage W–Sn polymetallic mineralization in the Nanling Range, South China: An example from the Dengfuxian–Xitian ore field

Late Jurassic Wenjiaping high Sr/Y granite: A product of partial melting of the Precambrian basement rocks trigged by lithospheric extension in the Songpan–Garzê fold belt, SW China

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