Two granitic plutons in Central Western Kunlun Belt: Their ages and possible sources

Yuan, Chao; Sun, Min; Li, Jiliang

doi:10.1007/bf02886165

Cited by 18 publications

(8 citation statements)

References 4 publications

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“…Both of them are formed during the Triassic, and are related to the closure of the Paleo-Tethys ocean basin. Moreover, island-type and collision-type granites with the ages of 180-225 Ma, outcropping in the central (in the southern Kudi, Mazha, and Sanshiliyingfang) and the eastern (in the southern Kangxiwar) Kangxiwar tectonic zone [16,[34][35][36][37][38][39][40] lend further support for the cognition that the Kangxiwar tectonic zone was formed in the Indosinian.…”

Section: Tectonic Significancementioning

confidence: 84%

Geochronological evidence of Indosinian (high-pressure) metamorphic event and its tectonic significance in Taxkorgan area of the Western Kunlun Mountains, NW China

Yang

Liu

Cao

et al. 2010

Sci. China Earth Sci.

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The CL images, LA-ICP-MS in situ trace elements analysis, and U-Pb dating for zircons indicate that the metamorphic ages of the sillimanite-garnet-biotite gneiss and the garnet-amphibole gneiss from eastern Taxkorgan of the Western Kunlun Mountains are 220±2 and 220±3 Ma respectively, and their protolith ages are younger than 253±2 and 480±8 Ma respectively. Two samples were collected at the same outcrops with HP mafic granulite and HP pelitic granulite. Mineral assemblage of the sillimanite-garnet-biotite gneiss (Grt+Sill+Per+Q) is consistent with that of HP pelitic granulite at early high amphibolite-granulite facies stage. Mineral assemblage of the garnet-amphibole gneiss (Grt+Amp+Pl+Q) is consistent with retro-metamorphic assemblage of HP mafic granulite at amphibolite facies stage. The dating results suggest that these HP granulites underwent peak metamorphism at 220±2 to 253±2 Ma. Thus, the Kangxiwar tectonic zone was probably formed by subduction and collision of the Paleo-Tethys Ocean during Indosinian. Protolith ages of the two samples, together with previously published U-Pb zircon dating age, suggest that the sillimanite-garnet schist-quartzite unit is a late Paleozoic unit, not a part of the Paleoproterozoic Bulunkuole Group. Western Kunlun Mountains, LA-ICP-MS zircon dating, Bulunkuole Group, Indosinian, Kangxiwar tectonic zone Citation:Yang W Q, Liu L, Cao Y T, et al. Geochronological evidence of Indosinian (high-pressure) metamorphic event and its tectonic significance in

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Section: Tectonic Significancementioning

confidence: 84%

Geochronological evidence of Indosinian (high-pressure) metamorphic event and its tectonic significance in Taxkorgan area of the Western Kunlun Mountains, NW China

Yang

Liu

Cao

et al. 2010

Sci. China Earth Sci.

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“…1a) (e.g. Jiang et al 2001Jiang et al , 2002Jiang et al , 2013Xiao et al 2005;Xu et al 1992Xu et al , 1996Yuan et al 1999Yuan et al , 2002Wang et al 2013). The Early Mesozoic granitoids, located in the Southern Kunlun and Taxkogan-Tianshuihai terranes along the Mazar-Kangxiwar faults, occupy a specific position during the Eurasia-Tethys tectonic evolution in this area.…”

Section: Regional Geologymentioning

confidence: 96%

Origins of Early Mesozoic granitoids and their enclaves from West Kunlun, NW China: implications for evolving magmatism related to closure of the Paleo-Tethys ocean

Wang

Liu

Korhonen

et al. 2015

Int J Earth Sci (Geol Rundsch)

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the melting of a source at middle crustal depths. The AP host and its enclaves from the southeastern part of the West Kunlun have low Rb, Rb/Sr (0.15-1.90) and weakly negative Eu anomalies but high HREE contents indicating limited fractionation of plagioclase without residual garnet in their source. The inferred protolith is an intermediate igneous rock in the middle or lower crust. MEs hosted in the AP have high Mg# (39.7-45.0) and Nb and weakly negative Eu anomalies, as well as high Sr, P and Ti, corresponding to a medium-K basaltic rock, which may have originated from mixing of partial melting of metasomatised mantle wedge that has been modified by upwelling asthenospheric mantle and crustal melting in the deep source. Post-collisional southeasternward younging of Mesozoic granitoids in the West Kunlun records a transition from shallow level, mid-crustal melting to deeper level, lower-crustal melting. The post-collisional granitoids show significant mantle input increasing from northwest to southeast, which was closely associated with mafic magma-driven partial melting of mantle and crustal sources as a consequence of slab break-off. Syn-to post-collisional Early Mesozoic granites emplaced along the Mazar-Kangxiwar suture zone suggest that these tectonomagmatic processes followed the closure of the Paleo-Tethys ocean during the Tarim and Karakorum-Qiangtang continental collision.

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“…1), which provides excellent exposures of interlayered mafic, hybrid, and felsic magmatic rocks. We combine detailed field relationships, zircon U-Pb-Hf iso topic data, whole-rock geochemistry, and thermodynamic modeling to elucidate the processes through which the pluton was constructed and evolved 404 Ma (Yuan et al, 1999) 441±5 Ma (Cui et al, 2006) 447±7 Ma (Cui et al, 2006) 443±2 Ma (Cui et al, 2006) 502±9 Ma (Cui et al, 2006) 500±1 Ma (Cui et al, 2006) 468±3 Ma (Cui et al, 2006) 507±10 Ma (Zhang et al, 2007) 320-331 Ma (Zhang et al, 2006;Kang et al, 2015) 408 Ma (Xiao et al, 2005) 441±2 Ma (Wang et al, 2013) 430-460 Ma (Li et al, 2007;Ye et al, 2008; this study) 471±5 Ma (Yuan et al, 2003) 431±3 Ma (Cui et al, 2006) 456±7 Ma (Feng et al, 2014) 446-449 Ma (Yu et al, 2011) 430±1 Ma (Yang et al, 2016) 440-470 Ma (Gao et al, 2013) 500-514 Ma (Zhang et al, 2016) 515±2 Ma (Zhu et al, 2016) 530±6 Ma (Zhu et al, 2016) 440-480 Ma (Zheng et al, 2013) Fig. 1C L o n g m u c u o F a u l t 531±3 Ma (Yin et al, 2020) 525-533 Ma (Liu et al, 2019) 38 driven by intruded mafic magmas.…”

Section: ■ Introductionmentioning

confidence: 99%

Supplemental Material: Mafic magma-driven magmatic processes and compositional variation in granitic pluton construction: The Buya intrusion of West Kunlun, Northwestern China

Wang¹,

al.²

2022

Preprint

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Two granitic plutons in Central Western Kunlun Belt: Their ages and possible sources

Cited by 18 publications

References 4 publications

Geochronological evidence of Indosinian (high-pressure) metamorphic event and its tectonic significance in Taxkorgan area of the Western Kunlun Mountains, NW China

Geochronological evidence of Indosinian (high-pressure) metamorphic event and its tectonic significance in Taxkorgan area of the Western Kunlun Mountains, NW China

Origins of Early Mesozoic granitoids and their enclaves from West Kunlun, NW China: implications for evolving magmatism related to closure of the Paleo-Tethys ocean

Supplemental Material: Mafic magma-driven magmatic processes and compositional variation in granitic pluton construction: The Buya intrusion of West Kunlun, Northwestern China

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