Petrological, geochemical and geochronological constraints on the origin of the Xiadong Ural–Alaskan type complex in NW China and tectonic implication for the evolution of southern Central Asian Orogenic Belt

Su, Ben Xun; Qin, Ke; Zhou, MF; Sakyi, Patrick Asamoah; Thakurta, Joyashish; Tang, Dong; Liu, Ping Ping; Xiao, Qing; Sun, He

doi:10.1016/j.lithos.2014.05.005

Cited by 47 publications

(44 citation statements)

References 66 publications

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“…Both Zr and P 2 O 5 show correlations with SiO 2 with maxima at ~65 and ~60 wt% SiO 2 , respectively, which is consistent with arc meta‐luminous magma evolutions (Figure c,d; Lee & Bachmann, ). Therefore, we favour a tectonic model in which the Late Carboniferous magmatic rocks from the CTM were generated in a continental arc setting, which was probably related to the subduction of the North Tianshan Ocean along the north margin of the CTM (Figure a; Chen et al, ; Lu et al, ; Su et al, ; Xiao et al, ; Zhang et al, , ). As recently proposed by Chen et al (, ), during the Late Carboniferous‐Late Permian, a rollback subduction of the North Tianshan Ocean beneath the CTM led to the northward movement of the magmatic axis and created the Yamansu arc (Figure a).…”

Section: Discussionmentioning

confidence: 84%

“…However, as stated above, the tectonic setting of the CTM in the Late (Lu et al, 2017;Su et al, 2014;Xiao et al, 2004;Zhang et al, 2015; and (c) post-collisional setting after the closure of the South Tianshan…”

Section: Implications For the Late Carboniferous Tectonic And Crustmentioning

confidence: 76%

“…However, as stated above, the tectonic setting of the CTM in the Late Carboniferous is still controversial. Several geodynamic models have been proposed, including (a) slab roll‐back of the subducted North Tianshan Oceanic Plate (Tang et al, ); (b) the continental arc related to the subduction of the North Tianshan Ocean (Lu et al, ; Su et al, ; Xiao et al, ; Zhang et al, , ); and (c) post‐collisional setting after the closure of the South Tianshan Ocean (Dong et al, ; Jin et al, ). Furthermore, it has also been a matter of debate whether the Palaeozoic magmatism in the CTM involved the generation of new crust or reworking of pre‐existing Precambrian crustal basements (Dong et al, ; Du et al, ; Huang, Wang, et al, ; Jin et al, ; Li et al, ; Ma et al, ; Shi et al, ; Yin et al, ; Zhang et al, ).…”

Section: Discussionmentioning

confidence: 99%

“…The Mesoproterozoic granitic rocks suffered metamorphic events at ~926 and 380 Ma, while the Neoproterozoic rocks recorded a ~380 Ma metamorphic event (He et al, , ). The CTM is further characterized by voluminous Palaeozoic to Early Mesozoic (500–240 Ma) granitic rocks and minor gabbros intruding the Mesoproterozoic to Neoproterozoic rocks (Dong et al, ; He, Zhang, Zong, Wang, & Yu, ; Lei et al, ; Ma et al, , ; Shi et al, , ; Su et al, ; Tang et al, ; Wang et al, ; Wen, He, & Zhang, ; Yin et al, , ; Zhang et al, ; Zhang et al, , ; Zhang, Zhao, Sun, Han, & Liu, ; Zheng, Mao, Yang, Chai, & Shen, ; Zhu et al, ).…”

Section: Geological Settingmentioning

confidence: 99%

“…Inset figure shows a simplified tectonic map of the Central Asian Orogenic Belt (modified after He et al, ). Age data are cited from (1) Huang, Wang et al, (2015); (2) Jin et al (); (3) Li et al (); (4) Lu et al (); (5) Ma, Shu, and Meert (); (6) Su et al (); (7) Sun, Li, Wang, Gao, and Song (); (8) Tang et al (); (9) Wang, Zhang, Zhang, and Qi (); (10) Xu et al (); (11) Yin et al (); (12,13) Zhang et al (, ); (14) Zhu, Guo, and Zhou (). NTAS, Northern Tianshan Arc System; YLM, Yili Microcontinent; CTM, Central Tianshan Microcontinent; STSZ, Southern Tianshan Suture Zone [Color figure can be viewed at wileyonlinelibrary.com]…”

Section: Introductionmentioning

confidence: 99%

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Late Carboniferous crustal evolution of the Chinese Central Tianshan microcontinent: Insights from zircon U–Pb and Hf isotopes of granites

Wen

2020

Geological Journal

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The Central Tianshan microcontinent (CTM) in the southern Central Asian Orogenic Belt is characterized by Precambrian crustal basements and widespread Palaeozoic granitic rocks. However, the Palaeozoic tectonic process and associated crustal evolution of the CTM have not been well constrained. In this paper, we report whole‐rock geochemistry, zircon U–Pb ages, Hf isotopes, and trace elements for the Late Carboniferous granodiorite and monzogranite from the Hongliujingbei area of the eastern CTM. These data were further integrated with previously published whole‐rock geochemistry and zircon Hf isotopic data of the intensive Late Carboniferous (327–300 Ma) magmatic rocks in the CTM in order to gain more insights into the crustal and tectonic evolution of the CTM during the Late Carboniferous. LA‐ICP‐MS zircon U–Pb dating results indicate that the granodiorite and monzogranite from the Hongliujingbei area were emplaced at ~320 Ma. Their highly variable zircon εHf(t) values (−0.1 to +12.9) suggest that the magmas of these rocks were formed by the mixing of mantle‐ and crustal‐derived magmas. The Late Carboniferous magmatic rocks from the CTM, as a whole, show a wide range of zircon εHf(t) values (−3.7 to +13.4) and geochemical characteristics typical for magma evolution in an active continental margin setting. Therefore, we suggest that the Late Carboniferous magmatic rocks in the CTM were probably generated in a continental arc formed by the southward subduction of the North Tianshan Ocean Plate beneath the CTM, and their mostly depleted zircon Hf isotopic compositions indicate that juvenile crustal growth was a dominant process in the CTM during the Late Carboniferous.

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Section: Discussionmentioning

confidence: 84%

Section: Implications For the Late Carboniferous Tectonic And Crustmentioning

confidence: 76%

Section: Discussionmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Late Carboniferous crustal evolution of the Chinese Central Tianshan microcontinent: Insights from zircon U–Pb and Hf isotopes of granites

Wen

2020

Geological Journal

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Geochronology and geochemistry of a newly identified Permian hornblende gabbro suite in Aqishan–Yamansu Belt, eastern Tianshan, NW China: Implications on petrogenesis and tectonic setting

et al. 2021

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Permian mafic‐ultramafic intrusions have great significance for understanding the geodynamic evolution of the Late Palaeozoic eastern Tianshan Orogen due to containing important information on the nature of mantle sources, crust–mantle interaction, and magmatic differentiation. Increasingly, more Permian mafic‐ultramafic intrusions are discovered in the Jueluotage belt, especially in the Kangguer ductile shear zone, whereas the mafic‐ultramafic intrusions in the Aqishan–Yamansu belt are ill‐informed. In this study, we provide zircon U–Pb geochronological, geochemical, and Sr–Nd–Pb–Hf isotopic data of a newly identified hornblende gabbro suite at the Shaquanzi Fe–Cu deposit in the Aqishan–Yamansu Belt. Zircon U–Pb dating results indicate that the Shaquanzi hornblende gabbro was emplaced at Early Permian (ca. 274–265 Ma). The rocks are calc‐alkaline and have arc‐like geochemical features, including enrichments in large‐ion lithophile elements (LILEs: Rb, Ba, K, Pb and Sr) and light rare‐earth elements (LREEs: Nb, Ta, Zr, Hf, and Ti), and depletions in high‐field‐strength elements (HFSEs) with markedly negative Nb and Ta anomalies. The rocks also exhibit depleted‐mantle isotopic signatures, with positive bulk‐rock εNd(t) values of +3.34 to +4.44 and positive zircon εHf(t) values of +2.8 − +8.7, which are relatively more enriched than those of coeval mafic‐ultramafic intrusions from the Kangguer ductile shear zone, but similar to those in the Central Tianshan Massif. We suggest that the Shaquanzi mafic intrusion suite was generated by 10–30% partial melting of a depleted‐mantle source at over 85 km depth, corresponding to the garnet to garnet‐spinel stability field. And the mantle source had likely been metasomatized by slab‐derived fluids of previous subduction. Integrating with geochemical data of the coeval mafic‐ultramafic and felsic intrusive rocks in the adjacent tectonic belts of eastern Tianshan Orogen, we speculate that the Shaquanzi mafic intrusion was formed in a post‐collision extensional setting, probably triggered by slab breakoff. Metasomatism of the depleted lithospheric mantle had likely occurred during the pre‐Permian subduction of the Kangguer oceanic slab.

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Geology and geochemistry of the Tulaergen conduit-style magmatic Ni-Cu sulfide deposit in the Central Asian Orogenic Belt, northwestern China

Wang

et al. 2021

Miner Deposita

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Petrological, geochemical and geochronological constraints on the origin of the Xiadong Ural–Alaskan type complex in NW China and tectonic implication for the evolution of southern Central Asian Orogenic Belt

Cited by 47 publications

References 66 publications

Late Carboniferous crustal evolution of the Chinese Central Tianshan microcontinent: Insights from zircon U–Pb and Hf isotopes of granites

Late Carboniferous crustal evolution of the Chinese Central Tianshan microcontinent: Insights from zircon U–Pb and Hf isotopes of granites

Geochronology and geochemistry of a newly identified Permian hornblende gabbro suite in Aqishan–Yamansu Belt, eastern Tianshan, NW China: Implications on petrogenesis and tectonic setting

Geology and geochemistry of the Tulaergen conduit-style magmatic Ni-Cu sulfide deposit in the Central Asian Orogenic Belt, northwestern China

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