Late Paleoproterozoic multiple metamorphic events in the Quanji Massif: Links with Tarim and North China Cratons and implications for assembly of the Columbia supercontinent

Chen, Nengsong; Liao, Fanxi; Wang, Lu; Santosh, M.; Sun, Min; Wang, Qinyan; Mustafa, Hassan Abdelslam

doi:10.1016/j.precamres.2013.01.013

Cited by 88 publications

(42 citation statements)

References 112 publications

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“…The monzo-granitic gneiss was intruded by the ~1.83-1.85 Ga metamafic dyke swarms (Liao et al, 2014;Lu et al, 2008) and underwent medium-P/T type metamorphism at ~1.91 Ga, as evidenced by LA-ICPMS U-Pb age 1 913±38 Ma of metamorphic zircons from an amphibolite enclave within the monzo-granitic gneiss . The medium-P/T type metamorphism at ~1.82 Ga, with regard to the LA-ICPMS U-Pb age of 1 816±19 Ma of metamorphic zircons from a small lens that transformed from the ~1.83-1.85 Ga metamafic dyke swarms (Chen et al, 2013a). The precursor sediments of the paragneiss suite were formed later than ~2.17 Ga as constrained by the detrital zircon LA-ICPMS U-Pb dating (e.g., Zhang et al, 2014;Chen et al, 2013aChen et al, , 2012Huang et al, 2011).…”

Section: Geology and Petrography Of The Meta-mafic Dykesmentioning

confidence: 97%

“…The medium-P/T type metamorphism at ~1.82 Ga, with regard to the LA-ICPMS U-Pb age of 1 816±19 Ma of metamorphic zircons from a small lens that transformed from the ~1.83-1.85 Ga metamafic dyke swarms (Chen et al, 2013a). The precursor sediments of the paragneiss suite were formed later than ~2.17 Ga as constrained by the detrital zircon LA-ICPMS U-Pb dating (e.g., Zhang et al, 2014;Chen et al, 2013aChen et al, , 2012Huang et al, 2011). The paragneiss suite was subjected to two metamorphisms.…”

Section: Geology and Petrography Of The Meta-mafic Dykesmentioning

confidence: 97%

“…The basement rocks of the QM underwent the first regional medium P/T-type amphibolite-to lower granulite-facies metamorphism and anatexis accompanying exhumation at ~1.90-1.95 Ga, documenting the Late Paleoproterozoic continent-continent collision process (Chen et al, 2013a(Chen et al, , b, 2012(Chen et al, , 2009Zhang L et al, 2011;Wang, 2009;Lu et al, 2008;Zhang J X et al, 2001). The second metamorphism which took Geochemistry of Metamafic Dykes from the Quanji Massif: Petrogenesis and Further Evidence for Oceanic Subduction 3 place in the end of the Late Paleoproterozoic occurred in two stages, the earlier of low P/T-type amphibolite-facies metamorphism in an arc setting during subduction of the oceanic crust at ~1.84 Ga, and the later of medium-P/T metamorphism in response to arc-continent or continent-continent collision peaked at ~1.82 Ga, which caused in epidote amphibolitefacies metamorphism for the ~1.83-1.85 Ga metamafic dykes (Liao et al, 2014;Chen et al, 2013a, b).…”

Section: Geological Backgroundmentioning

confidence: 99%

“…It is bounded by the Qinghai Lake fault in the north and by the Early Paleozoic north Qaidam high-to ultrahigh-pressure belt in the south, respectively (Fig. 1) Chen et al 2013aChen et al , 2012Lu, 2002), unconformably overlain with a cover of Nanhua-Sinian to Mesozoic strata (Lu, 2002).…”

Section: Geological Backgroundmentioning

confidence: 99%

“…The Quanji massif (QM) has been considered as a cratonic fragment which has a similar complex history to that of the NCC and TC (Chen et al, 2013aGe et al, 2013;Gong et al, 2012;Lu et al, 2008;Lu, 2002). Based on new age data from metamorphic zircons and petrography, Chen et al (2013b) recognized two metamorphic events which can be linked to the subduction and/or collision, with the first stage at 1.95-1.90 Ga and the second at 1.82-1.80 Ga.…”

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Geochemistry of metamafic dykes from the Quanji massif: Petrogenesis and further evidence for oceanic subduction, Late Paleoproterozoic, NW China

et al. 2016

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A suite of ~1.84-1.92 Ga metamafic dykes within the paragneiss suite (khondalite) of the Quanji massif in NW China, has been chosen in this study for further understanding the tectonic evolution and possible links to the global Columbia supercontinent. Occurrence and field relations suggest that they were formed coevally with a previous studied ~1.83-1.85 Ga metamafic dyke swarms. Whole-rock major and trace elemental geochemistry suggests precursor magma of the amphibolites being generated from a volcanic arc-related tectonic setting rather than a back-arc environment where the metamafic dyke swarms were emplaced. The metamafic dykes show enrichment of LREE and strongly negative anomalies for Ta-Nb, Zr-Hf and Ti, have high SiO 2 (49.3 wt.%-52.5 wt.%) but low MgO (6.40 wt.%-7.76 wt.%) contents and Mg # (Mg # =[100×(MgO/40.3)]/[MgO/40.3+FeO/71.8]) values (45.7-52.1), suggesting evolved precursor magma. The high values of La/Ta (22.2-42.8) and La/Nb (1.71-2.47), mildly negative ε Nd(t) values (-2.51-0.15), with depleted mantle model ages (T DM ) of 2.45-2.84 Ga, suggest that their precursor magmas were possibly derived from a subduction-related fluid metasomatized Archean sub-continental lithospheric mantle. This study provides further evidence for oceanic plate subduction prevailing before or around ~1.85 Ga, which confirms a prolonged subduction-accretion-collision history in the NW China which is possibly linked to the assembly of the Columbia supercontinent. KEY WORDS: metamafic dyke, geochemistry, petrogenesis, tectonic setting, Quanji massif, NW China. INTRODUCTIONRecent investigations on supercontinents suggest that the first coherent supercontinent on the Earth, termed Columbia was gradually assembled during 2.

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Section: Geology and Petrography Of The Meta-mafic Dykesmentioning

confidence: 97%

Section: Geology and Petrography Of The Meta-mafic Dykesmentioning

confidence: 97%

Section: Geological Backgroundmentioning

confidence: 99%

Section: Geological Backgroundmentioning

confidence: 99%

mentioning

confidence: 99%

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Geochemistry of metamafic dykes from the Quanji massif: Petrogenesis and further evidence for oceanic subduction, Late Paleoproterozoic, NW China

et al. 2016

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Palaeo‐Mesoproterozoic magmatic and metamorphic events from the Kuluketage block, northeast Tarim Craton: geochronology, geochemistry and implications for evolution of Columbia

Wang

Cao

et al. 2017

Geological Journal

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Banded iron formations (BIFs), granites and diabases are extensively distributed in the Kuluketage block of the northeast Tarim Craton. Here we report laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) zircon U-Pb ages and whole-rock elemental data for these rocks. The detrital zircons from the BIFs show a peak age of 2.0-1.8 Ga with a weighted mean age of 1945 ± 10 Ma (MSWD = 0.77), and the zircons from the granite give an upper intercept age of 1974 ± 27 Ma (MSWD = 1.05). The trace element features suggest that the Asitingbulake granite, which belongs to the I-type granite, may originate from the re-melting of continental crust in a~1.95 Ga collisional orogenic setting. Recently, the 2.0-1.8 Ga continuous magmatic and metamorphic events which are contemporaneous with the global orogenic event have been reported in the Kuluketage block and other massifs around the Tarim Craton (e.g. Central Tianshan, Dunhuang, Quanji, Altyn Tagh, West Kunlun). Based on the previous geochronological data, two 2.0-1.8 Ga orogens associated with the assembly of the Columbia supercontinent can be identified along the north and south margins of Tarim Craton: (1) the north Tarim Orogen, Central Tianshan-Kuluketage-Dunhuang orogenic belt and (2) the south Tarim Orogen, West Kunlun-Altyn Tagh-Aketashtage-Quanji orogenic belt. Additionally, this paper reports a new zircon U-Pb age of 1497 ± 21 Ma (MSWD = 0.96) from the Baowenbulake diabase dykes where the trace element features suggest that the parental magma of Baowenbulake diabases is derived from the mantle in an intra-plate rifting or extensional setting. The~1.5 Ga diabases from northwest Tarim corresponded to a major episode of mafic magmatism during the early Mesoproterozoic period identified in other crustal fragments of Laurentia, Siberia, Greater Congo, South China and North China Craton and probably belong to one of the three major large igneous provinces associated with the breakup of the Mesoproterozoic Columbia supercontinent. The data from this paper provide important constraints on the configuration of the Tarim Craton during the assembly and breakup of the Columbia supercontinent.

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The Jurassic basin prototypes and episodic sedimentary characteristics of the Hongshan Sag in the eastern segment of the Northern Qaidam Basin, NW China

Feng

Xiao-dong

et al. 2017

Geological Journal

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The Hongshan Sag, located in the eastern segment of the northern Qaidam block, has undergone complicated tectonic evolution, which results in the controversy on the Jurassic basin prototype. Based on field geological investigation, interpretation of seismic stratigraphy, restoration of balanced cross‐section, recognition of stratigraphic contact relationship, observation of lithofacies features, and exploration of basin filling characteristics in the Hongshan Sag, the paper analyses the basin prototype, establishes a sequence stratigraphic framework, and explores episodic sedimentary features. The Hongshan Sag was a small‐scale faulted basin pulled apart by NE‐oriented extensional stress along the margin of the Qaidam Block during the Early Jurassic. During the Middle Jurassic, along with protracted rifting, the Hongshan Sag evolved into a relatively large‐scale faulted basin controlled by NE‐oriented extensional stress. The faulted basin evolved into a compressional sag during the Late Jurassic. The Jurassic strata are subdivided into 2 first‐order sequences, 3 second‐order sequences, and 5 third‐order sequences. Every third‐order sequence corresponds to an episode. The deposits of Episode I(SIII1) mainly contain coarse‐grained clasts of alluvial fan and braided river, which is locally distributed in the eastern sub‐sag. The deposits of Episode II(SIII2) mainly encompass coarse‐grained clasts of shallow water braided delta, which is distributed in discrete eastern and western sub‐sags. During the period of Episode III(SIII3), the isolated eastern and western sub‐sags connect to a whole sag, whose sediments are composed of coarse‐grained clasts of fan delta in steep slope of basin. Deposits of Episode IV(SIII4) comprises fine‐grained clasts, which are distributed throughout the basin. The deposits of compressional Episode V(SIII5) mainly consist of red fine‐grained clasts, but suffer from obvious erosion on the margin of the basin.

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Late Paleoproterozoic multiple metamorphic events in the Quanji Massif: Links with Tarim and North China Cratons and implications for assembly of the Columbia supercontinent

Cited by 88 publications

References 112 publications

Geochemistry of metamafic dykes from the Quanji massif: Petrogenesis and further evidence for oceanic subduction, Late Paleoproterozoic, NW China

Geochemistry of metamafic dykes from the Quanji massif: Petrogenesis and further evidence for oceanic subduction, Late Paleoproterozoic, NW China

Palaeo‐Mesoproterozoic magmatic and metamorphic events from the Kuluketage block, northeast Tarim Craton: geochronology, geochemistry and implications for evolution of Columbia

The Jurassic basin prototypes and episodic sedimentary characteristics of the Hongshan Sag in the eastern segment of the Northern Qaidam Basin, NW China

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