Petrogenesis and geodynamic implications of the Mid-Triassic lavas from East Kunlun, northern Tibetan Plateau

Li, Xiaowei; Huang, Xiaowei; Luo, Mingfei; Dong, Guochen; Mo, Xuanxue

doi:10.1016/j.jseaes.2015.03.009

Cited by 61 publications

(50 citation statements)

References 79 publications

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“…From the Permian to Middle Triassic, abundant granitoids (280 Ma-250 Ma) intruded during this period and were associated with the Paleo-Tethys oceanic basin subducting northward (Deng et al, 2014b;Huang et al, 2014;Li et al, 2001Li et al, , 2013aLi et al, ,2013bMo et al, 2007;QRGST, 1981;Xiong et al, 2013;Yang et al, 1996). The granitoids of Middle Triassic to Early Jurassic indicated the closure of the Paleo-Tethys Ocean and the Eastern Kunlun area entered the intracontinental orogenic stage (Deng et al, 2015b;Guo et al, 1998;Kui et al, 2010;Li et al, 2015c;Mo et al, 2007;Li et al, 2015d;Ding et al, 2015;Hu et al, 2015;Wang et al, 2016). A great number of skarn-type and porphyry-related poly-metallic deposits are temporally and spatially related to Middle to Late Triassic granitic intrusions (235-219 Ma) ( Fig.…”

Section: Regional Geologymentioning

confidence: 95%

Chemical compositions of garnet and clinopyroxene and their genetic significances in Yemaquan skarn iron–copper–zinc deposit, Qimantagh, eastern Kunlun

Zuo

Liu

Jiang

et al. 2015

Journal of Geochemical Exploration

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Section: Regional Geologymentioning

confidence: 95%

Chemical compositions of garnet and clinopyroxene and their genetic significances in Yemaquan skarn iron–copper–zinc deposit, Qimantagh, eastern Kunlun

Zuo

Liu

Jiang

et al. 2015

Journal of Geochemical Exploration

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“…The petrogenetic models of the rhyolitic rocks have been produced in various ways, including (a) fractional crystallization processes from basaltic magmas (De Paolo, ; X. W. Li et al, ), (b) partial melting of a mafic protolith in the lower crust, and (c) magma mixing between rhyolitic and basaltic magmas (Eichelberger, ; X. W. Li et al, ). The volume of rhyolitic rocks are bigger than the basaltic rocks in the study area, which preclude the possibility of fractional crystallization processes of basaltic magma.…”

Section: Discussionmentioning

confidence: 99%

“…The volume of rhyolitic rocks are bigger than the basaltic rocks in the study area, which preclude the possibility of fractional crystallization processes of basaltic magma. The rhyolite samples have relatively high SiO 2 (65.75–80.49%) contents, which preclude magma mixing between rhyolitic and basaltic magmas (X. W. Li et al, ). The rhyolite samples are classified as calc‐alkaline series, with low MgO and high SiO 2 (65.75–80.49%) contents and characterized by enrichment in LILEs (e.g., Rb, Ba, Th, U, and K) and LREEs and depletion in HFSEs (e.g., Nb, Ta, P, and Ti), with low Cr, Ni, and Co contents.…”

Section: Discussionmentioning

confidence: 99%

“…The EKO is bounded by the Qaidam basin to the north, the Bayan Har‐Songpan Ganze terrane to the south, the Altyn Tagh strike‐slip fault to the west, and the Wenquan Fault to the east (Figure b; X. H. Chen, Gehrels, Yin, Li, & Jiang, ; Xiong et al, ; X. H. Chen et al, ; X. W. Li, Huang, Luo, Dong, & Mo, ; R. Xia, ). The EKO can be divided into North Kunlun‐Qaidam terrane (NK‐QT) and South Kunlun terrane (SKT) by Central Kunlun Fault (CKLF; Figure b; X. H. Chen et al, ; X. H. Chen et al, ; X. W. Li et al, ; R. B. Li, Pei, et al, ; J. L. Li, Zhou, et al, ; Meng, Zhang, & Cui, ; Xiong, ; Xu et al, ; Xu et al, ).…”

Section: Geological Settingmentioning

confidence: 99%

“…The EKO is bounded by the Qaidam basin to the north, the Bayan Har-Songpan Ganze terrane to the south, the Altyn Tagh strike-slip fault to the west, and the Wenquan Fault to the east (Figure 1b; X. H. Chen, Gehrels, Yin, Li, & Jiang, 2012;Xiong et al, 2013;X. H. Chen et al, 2015;X. W. Li, Huang, Luo, Dong, & Mo, 2015;R.…”

Section: Geological Settingmentioning

confidence: 99%

See 2 more Smart Citations

Geochronology and geochemistry of the Late Devonian–Early Carboniferous volcanic rocks in Aksu River area, western end of the East Kunlun Orogen

Liu

et al. 2019

Geological Journal

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We present LA‐ICP‐MS zircon U–Pb dating, geochemical data for the Late Devonian–Early Carboniferous volcanic rocks in the Aksu River area, western end of the East Kunlun Orogen, with an aim to constrain the ages, petrogenesis, and tectonic setting of volcanic rocks and to comprehend the Late Devonian–Early Carboniferous tectonic evolution of the north branch of the Paleo‐Tethys Ocean. The Late Devonian–Early Carboniferous volcanic rocks are mostly composed of andesite and rhyolite. The new U–Pb ages show that the volcanic rocks formed in the Late Devonian–Early Carboniferous with ages of ca. 364–343 Ma. The volcanic rocks are classified as calc‐alkaline series. All of the volcanic rocks are characterized by enrichment in large‐ion lithophile elements (e.g., Rb, Ba, U, Sr, and K) and light rare earth elements and depletion in some high‐field‐strength elements (e.g., Nb, Ta, P, and Ti). The andesite samples have relatively high La/Nb (1.66–3.63) but low La/Ba (0.05–0.23) ratios, indicating the mantle source could be depleted mantle, and it had been metasomatized before partial melting. The rhyolite samples have low Nb/Ta and Zr/Hf ratios and Cr, Ni, and Co contents, which indicate that the material source was mainly crust derived and has experienced fractional crystallization process. Combined with our zircon U–Pb dating, geochemical data and geological field investigation, the tectonic setting of the Late Devonian–Early Carboniferous volcanic rocks is possibly related to the subduction process. Furthermore, the Paleo‐Tethys oceanic crust between the Bayan Har and East Kunlun‐Qaidam terrane northward subducted beneath the East Kunlun‐Qaidam terrane in the Late Devonian–Early Carboniferous, and the north branch of the Paleo‐Tethys Ocean between the Bayan Har and East Kunlun‐Qaidam terrane opening event should be earlier than this time (~364 Ma).

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Identification of A‐type granite in the southeastern Kunlun Orogen, Qinghai Province, China: implications for the tectonic framework of the Eastern Kunlun Orogen

Peng

Zhao

et al. 2016

Geological Journal

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The Dalijigetang syenogranite in the eastern section of the Eastern Kunlun Orogen (EKO), China, is rich in SiO2 and alkali elements, has high FeOT/MgO ratios and is strongly depleted in CaO and MgO. Chondrite‐normalized REE patterns show light REEs enrichment, heavy REEs depletion and negative Eu anomalies (δEu = 0.43–0.53). The 104Ga/Al values range from 2.69 to 10.31. The combined total concentrations of Zr, Nb, Ce and Y (mean = 420.04 ppm) indicate that the Dalijigetang syenogranite is an A‐type granite. The zircon εHf(t) values relatively are all moderately negative (−6.1 to −10.7), and the model ages (tDM2) range from 1666 to 1960 Ma (mean = 1801 Ma), which is much older than zircon U–Pb ages (259 Ma). Based on integrated isotopic and geochemical data, we infer that the syenogranite formed by the partial melting of lower crustal material under low‐pressure and high‐temperature conditions. Based on the above data, combined with the regional geological background, we conclude that the Dalijigetang A‐type syenogranite formed during an end‐early Permian period of extension between two episodic subduction events within the EKO. This suggests that the onset of northward subduction of the Palaeo‐Tethyan Ocean plate might have commenced as early as the early Permian. Copyright © 2016 John Wiley & Sons, Ltd.

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Petrogenesis and geodynamic implications of the Mid-Triassic lavas from East Kunlun, northern Tibetan Plateau

Cited by 61 publications

References 79 publications

Chemical compositions of garnet and clinopyroxene and their genetic significances in Yemaquan skarn iron–copper–zinc deposit, Qimantagh, eastern Kunlun

Chemical compositions of garnet and clinopyroxene and their genetic significances in Yemaquan skarn iron–copper–zinc deposit, Qimantagh, eastern Kunlun

Geochronology and geochemistry of the Late Devonian–Early Carboniferous volcanic rocks in Aksu River area, western end of the East Kunlun Orogen

Identification of A‐type granite in the southeastern Kunlun Orogen, Qinghai Province, China: implications for the tectonic framework of the Eastern Kunlun Orogen

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