A traverse through the western Kunlun (Xinjiang, China): tentative geodynamic implications for the Paleozoic and Mesozoic

Mattern, Frank; Schneider, Werner; Li, Yongan; Li, Xiangdong

doi:10.1007/s005310050107

Cited by 15 publications

(44 citation statements)

References 21 publications

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“…Li et al (2009) indicate that this unit represents the residual basin filled by Permian-Triassic flysch sedimentation. These sequences can be correlated with the Bayankala belt further east (Sengör and Okurogullari 1991;Matte et al 1996;Mattern et al 1996;Li et al 2009). The Permian-Triassic sequence was intruded by Early Mesozoic calc-alkaline granitoids.…”

Section: Regional Geologymentioning

confidence: 93%

“…The Precambrian rocks are overlain by Devonian molasses, a Carboniferous-Permian shallow marine platform and Late Permian terrestrial facies sedimentary rocks (RGXR 1993). The deposition of continental clastic rocks also continued during the Cenozoic (Mattern et al 1996). The granitic rocks record an interval of magmatism and tectonic activity spanning the Early Paleozoic to the Early Mesozoic and are exposed along several NW-SE trending faults (Fig.…”

Section: Regional Geologymentioning

confidence: 97%

“…The Taxkogan-Tianshuihai terrane is considered to be a large accretionary prism which formed due to northward subduction of the Paleo-Tethys ocean, termed the "KaraKunlun accretionary prism" (Hsü 1988;Mattern et al 1996;Mattern and Schneider 2000;Wang 2004) or the "Tianshuihai accretionary wedge" (Xiao et al 2005). The PermianTriassic sequences developed on the prism, comprising sandstones, slates and minor carbonates.…”

Section: Regional Geologymentioning

confidence: 99%

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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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Section: Regional Geologymentioning

confidence: 93%

Section: Regional Geologymentioning

confidence: 97%

Section: Regional Geologymentioning

confidence: 99%

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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 unconformity between the middle and late Permian is reported widely in WKO (Ji 2005;Li 2007Li , 2008, where the Carboniferous to middle Permian deep-water turbidites and radiolarian siliceous rocks are unconformably overlain by late Permian strata, which according to Ji (2005) and Li (2007) are dominated by continental clastics and are locally succeeded by unconformable terrestrial early Triassic red molasse deposits. The unconformities between the late Triassic to early Jurassic red molasse and the older formations are also ubiquitous in the WKO, especially in the Western Kunlun and Tianshuihai Terranes (Jiang et al 1992;Mattern et al 1996;Mattern and Schneider 2000;Pan 2000;Ji 2005;Li 2007). The lithology of both the late Triassic and early Jurassic molasse formations is similar in large, consisting mainly of red terrestrial conglomerates, sandstones, siltstone and shales, though the later may contain a significant amount of granitoid debris and local coal seams (Mattern and Schneider 2000;Pan 2000;Ji 2005;Li 2007).…”

Section: Geology Of Wkomentioning

confidence: 97%

“…Numerous studies have been done since the early 1990s (e.g. Jiang et al 1992;Brunel et al 1994;Xu et al 1994;Hsu et al 1995;Matte et al 1996;Ding et al 1996;Pan 1990Pan , 1994Pan , 1996Pan , 2000Mattern et al 1996;Mattern and Schneider 2000;Chen et al 2005;Jiang et al 2002Jiang et al , 2008Xiao et al 2002aXiao et al , b, 2003Xiao et al , 2005Yuan et al 2002Yuan et al , 2005Zhang et al 2006;Li 2007), which have given new insights into the tectonic evolution of this region.…”

Section: Introductionmentioning

confidence: 97%

Geochemistry and geodynamic implications of the Triassic bimodal magmatism from Western Kunlun Orogen, northwest China

Liao

Jiang

Zhou

et al. 2011

Int J Earth Sci (Geol Rundsch)

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The Western Kunlun Orogen occupies a key tectonic position at the junction between the Tarim block and the Tethyan domain. However, the late Paleozoic to early Mesozoic, especially the middle to late Triassic tectonic evolution history of the Western Kunlun Orogen remains controversial. This study reports SHRIMP zircon U-Pb ages and geochemical as well as Sr-Nd-Hf isotopic data for middle to late Triassic Taer pluton in Western Kunlun Orogen, Northwest China. The Taer pluton shows a strong bimodal distribution of compositions, with the felsic rocks dominant and the mafic rocks subordinate. Zircon UPb dating reveals that the coexisting mafic and felsic rocks are coeval, both emplacing in a period between 234 and 225 Ma. Most of the studied rocks are potassium rich and can be classified into high-K calc-alkaline to shoshonitic series. They are also strongly enriched in LREE, LILE and depleted in HFSE with strong negative Ti and Nb anomalies, and characterized by enriched Sr-Nd-Hf isotopic signatures. Detailed geochemical and isotopic studies indicate that the Taer pluton was emplaced in a post-collisional extensional setting, with the mafic rocks derived from partial melting of the enriched continental lithospheric mantle in the spinel facies field, and the felsic rocks formed by anatexis of newly underplated basaltic rocks.

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Oceanic island basalts in ophiolitic mélanges of theCentralChinaOrogen: An overview

Yang

Tong

et al. 2017

Geological Journal

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We present an overview of the internal structure of the 10 ophiolitic mélanges in the Central China Orogen (CCO) with a focus on the geochemical character and tectonic evolution of the ophiolitic mélange‐related ocean island basalt (OIB) and mafic rock assemblages. The ophiolitic mélanges in CCO are generally complicated and usually consist of metamorphic peridotites (serpentinite), cumulates, gabbros, basaltic lavas (pillows), and abyssal radiolarian cherts. The ages of ophiolitic mélanges range from Mesoproterozoic to Carboniferous. The OIB‐type basalts and mafic rocks in CCO occur as tectonic blocks within the mélanges that are composed of limestones, radiolarian cherts, and turbidites, possessing formation characteristics of seamounts (oceanic islands/plateau). The mafic rocks in ophiolitic mélanges of CCO display uniform chondrite‐normalized rare earth element (REE) patterns with light REE enrichment and heavy REE depletion, no obvious Eu anomalies or negative Nb, Ta, and Ti anomalies, and primitive mantle‐normalized trace element patterns with significant large‐ion lithophile element enrichment, similar to those of modern OIB and the Hawaiian alkaline basalts. The OIB‐type basalts and mafic rocks are considered as accreted seamount fragments in an accretionary complex of CCO and may represent plume‐related magmatism within the Proto‐Tethys Ocean and Paleo‐Tethys Ocean. Our study provides further insights into the processes of multiple subduction and long‐lasting accretionary histories with seamounts in the CCO.

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A traverse through the western Kunlun (Xinjiang, China): tentative geodynamic implications for the Paleozoic and Mesozoic

Cited by 15 publications

References 21 publications

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

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

Geochemistry and geodynamic implications of the Triassic bimodal magmatism from Western Kunlun Orogen, northwest China

Oceanic island basalts in ophiolitic mélanges of theCentralChinaOrogen: An overview

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