The syncollisional granitoid magmatism and continental crust growth in the West Kunlun Orogen, China – Evidence from geochronology and geochemistry of the Arkarz pluton

Zhang, Yu; Niu, Yaoling; Hu, Yan; Liu, Jinju; Ye, Lei; Kong, Juanjuan; Duan, Meng

doi:10.1016/j.lithos.2015.05.007

Cited by 76 publications

(42 citation statements)

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“…Most of the studies focus on the middle and east part of the WKO, in particular the Kudi area, because of the relatively complete ophiolite. Even though there are lots of papers published on the Kudi area (Mattern & Schneider, ; Wang, ; Xiao et al, , Xiao et al, ; Yuan et al, ; Yuan, Sun, Zhou, et al, ; Zhang et al ), some basic questions are still controversial, such as the subduction direction of the Palaeo‐Tethys, and the time of the subduction.…”

Section: Introductionmentioning

confidence: 99%

“…NKT = North Kunlun Terrane; SKT = South Kunlun Terrane; TST = Tianshuihai Terrrane; OKS = Oytag Kudi Suture; MKS = Mazar Kangxiwa Suture; KKF = Karakorum Fault. (b) simplified geological map of the West Kunlun Orogenic belt showing age data of granitoid magmatism, which are from Jiang et al (); Liao et al (); Zhang et al (); Gao et al (); Qu et al (); Zhang, Lu, Yu, and Ye (); Jiang, Liao, Yang, and Shen (); Yu et al (); Yuan et al (); (Yuan, Sun, & Li, ); Xiao et al (); Cui, Wang, Bian, and Zhu (); Cui et al (); and Li et al (). Modified after Y. Zhang et al () [Colour figure can be viewed at wileyonlinelibrary.com]…”

Section: Introductionmentioning

confidence: 99%

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Early Palaeozoic accretionary tectonics of West Kunlun Orogen: Insights from Datong granitoids, mafic–ultramafic complexes, and Silurian–Devonian sandstones, Xinjiang, NW China

Xiao

Tian

2018

Geological Journal

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The Datong area is located in the western part of the Western Kunlun Orogen (WKO), occupying a key area of the Tethyan domain. Our new SHRIMP U–Pb zircon ages from the Datong area provide new information about the Palaeozoic evolution of the Western Kunlun Orogen. A 473.0 ± 2.8 Ma granite with 493.6 ± 4.8 Ma inherited zircons from the Kusilafu extrusive rocks is interpretation as an A‐type granite formed in a fore‐arc tectonic setting. The 485.5 ± 1.9 Ma granitoid of the Datongdong pluton combined with the 452.7 ± 7 Ma granitoid of the Datong pluton indicate that the Datong pluton is an intra‐oceanic arc complex formed by the southern subduction of the Proto‐Tethyan ocean crust. Zircons from gabbros of the Datong mafic–ultramafic complex have a 499.2 ± 2.1 Ma U–Pb crystallization age. Combined with its complicated whole‐rock geochemistry, we propose that there may have existed a Datong seamount in the early Palaeozoic. The detrital zircon results of Silurian–Devonian sandstones reveal that the Late Silurian sandstones have the characteristic zircons both from the Tarim Block and Datong Arc, suggesting that the Datong arc collided with the Tarim Block in the Late Silurian. The tectonic history of the WKO was characterized by a southern subduction of Proto‐Tethys terminated in the Late Silurian.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Early Palaeozoic accretionary tectonics of West Kunlun Orogen: Insights from Datong granitoids, mafic–ultramafic complexes, and Silurian–Devonian sandstones, Xinjiang, NW China

Xiao

Tian

2018

Geological Journal

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“…In this hypothesis, during continental collision, the remaining subducted ocean crust undergoes partial melting under amphibolite facies conditions, which produces and preserves granitoid magmas, contributing to net growth of continental crust. Because globally, active seafloor subduction is continuous, but continental collision is episodic, this hypothesis also satisfies the episodic growth of the continental crust and overcomes the difficulties of “island arc model.” This hypothesis has been tested with success along several orogenic belts on the greater Tibetan Plateau (Chen et al, ; Huang et al, ; Mo et al, 2007; Mo et al, ; Niu & O'Hara, ; Niu et al, ; Shao et al, ; Zhang et al, ).…”

Section: Introductionmentioning

confidence: 99%

“…Because globally, active seafloor subduction is continuous, but continental collision is episodic, this hypothesis also satisfies the episodic growth of the continental crust and overcomes the difficulties of "island arc model." This hypothesis has been tested with success along several orogenic belts on the greater Tibetan Plateau Huang et al, 2014;Mo et al, 2007;Mo et al, 2008;Niu & O'Hara, 2009;Niu et al, 2013;Shao et al, 2017;Zhang et al, 2016).…”

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confidence: 99%

The syncollisional granitoid magmatism and crust growth during the West Qinling Orogeny, China: Insights from the Jiaochangba pluton

et al. 2018

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The West Qinling Orogenic Belt (WQOB) is a major portion of the Qinling‐Dabie‐Sulu Orogen and holds essential information for understanding the protracted evolution of the north‐eastern branch of the Paleo‐Tethys in East Asia. In this study, we report our petrological, geochemical, and geochronological study on the five Triassic granitoid plutons of West Qinling with emphasis on the poorly studied Jiaochangba pluton with zircon U–Pb ages of 217.5 ± 1.6 Ma and 215.2 ± 1.2 Ma. The new data and the existing data on the other four plutons support the view that the West Qinling granitoids represent a magmatic response to the continental collision of the Yangtze Block (YB) with the North China Craton (NCC) in the Triassic. Like the other four plutons, the Jiaochangba pluton shows strong light rare earth element (REE) enrichment and weak heavy REE depletion ([La/Sm]N ≈ 7.14 ± 1.89; [Sm/Yb]N ≈ 4.63 ± 1.85) with varying negative Eu anomalies (Eu/Eu* ≈ 0.65 ± 0.20). In the N‐MORB normalized diagram, all the samples show relative enrichment in Rb, Pb, U, and K with negative Nb, Ta, P, and Ti anomalies, resembling those of the model continental crust. The Jiaochangba pluton has relatively lower (87Sr/86Sr)i (0.7062 to 0.7081), higher εNd(t) (−6.91 to −2.09), and εHf(t) (−5.57 to −0.14) than mature continental crust, which are consistent with their source being dominated by lower crust with significant mantle contributions. Mantle‐derived melt, which formed from partial melting of mantle wedge peridotite facilitated by dehydration of the subducted/subducting Mianlue ocean crust, provide the required heat for the crustal melting while also contributing to the compositions of these granitoids. Evolution of such parental magmas in open system crustal magma chambers with continued evolution/replenishment and crustal contamination and assimilation give rise to the observed petrological and geochemical characteristics of these granitoids.

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“…The Western Kunlun orogen has underwent multi-stage plate subduction, collision and accretion from early Paleozoic to Mesozoic. Abundant Triassic granitoids are adjacent to the Mazha-Kangxiwa suture which is regard as the early-Mesozoic suture of the Paleo-Tethys Ocean ( Mattern et al, 1996;Jiang et al, 2013;Zhang et al, 2016). Previous research data show that these granites are principally formed in the Late Triassic (ca.…”

Section: Introductionmentioning

confidence: 99%

Petrogenesis of I‐type granites from Yuqikapa granite pluton of the western Kunlun orogen: Deformation‐driven filter‐pressing differentiation

Wei

Wang

Dong

et al. 2017

Acta Geologica Sinica (Eng)

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The syncollisional granitoid magmatism and continental crust growth in the West Kunlun Orogen, China – Evidence from geochronology and geochemistry of the Arkarz pluton

Cited by 76 publications

References 86 publications

Early Palaeozoic accretionary tectonics of West Kunlun Orogen: Insights from Datong granitoids, mafic–ultramafic complexes, and Silurian–Devonian sandstones, Xinjiang, NW China

Early Palaeozoic accretionary tectonics of West Kunlun Orogen: Insights from Datong granitoids, mafic–ultramafic complexes, and Silurian–Devonian sandstones, Xinjiang, NW China

The syncollisional granitoid magmatism and crust growth during the West Qinling Orogeny, China: Insights from the Jiaochangba pluton

Petrogenesis of I‐type granites from Yuqikapa granite pluton of the western Kunlun orogen: Deformation‐driven filter‐pressing differentiation

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