Composition and evolution of the lithospheric mantle beneath the interior of the South China Block: insights from trace elements and water contents of peridotite xenoliths

Zhang, Hui; Zheng, Jianping; Lu, Jianggu; Pan, Shaokui; Zhao, Yi; Lin, Abing; Xiang, Lu

doi:10.1007/s00410-018-1476-z

Cited by 15 publications

(11 citation statements)

References 104 publications

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“…(b) Distribution of mantle xenoliths and igneous rocks modified from X. Li et al (2015), Xiang et al (2020), T. Xu et al (2015), H. Zhang, Zheng, et al (2018), and Z. F. Zhao et al (2015). ELIP: Emeishan large igneous province.…”

Section: Phanerozoic Intraplate Magmatismmentioning

confidence: 99%

“…Petrological and geochemical studies of mantle xenoliths indicate that there is a significant difference in composition between the cratonic lithosphere in the western SCB and that in the eastern SCB. Due to the absence of abundant and spatially distributed mantle samples, however, the composition and evolution of the SCLM beneath the interior of the SCB are not well constrained (e.g., Han et al., 2018; X. Y. Li, Zheng, et al., 2014; Luo, 1988; Xiang et al., 2020; H. F. Zhang et al., 2001; H. Zhang, Zheng, et al., 2018; J. P. Zheng et al., 2015).…”

Section: Introductionmentioning

confidence: 99%

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Thermochemical State of the Upper Mantle Beneath South China From Multi‐Observable Probabilistic Inversion

Yang

Afonso

et al. 2021

JGR Solid Earth

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The South China Block (SCB) is one of the main tectonic blocks of East Asia. It is widely believed that the SCB was formed by the amalgamation of the Yangtze Craton (YC) and the Cathaysia Block (CB) during the early Neoproterozoic time (cf. G. Zhao & Cawood, 2012). The subsequent tectonic evolution of the SCB has been controlled by a number of tectonomagmatic events in the middle Paleozoic and Mesozoic associated with intracontinental reworking and/or the subduction of the Pacific plate (cf. . In particular, widespread volcanic activity occurred during the Mesozoic and Cenozoic (H. Zhang, Zheng, et al., 2018;Zhao et al., 2015). Yet, the mechanisms responsible for such extrusive activity and their effect on the overall lithospheric structure and evolution of the region remains contentious . In this context, the present-day thermochemical structure of the subcontinental lithospheric mantle (SCLM) holds important clues, not only because it controls key physical properties (e.g., mantle density and viscosity), but because any evolutionary hypothesis needs to be consistent with it.Information on the compositional and thermal structure of the SCLM can be obtained from different sources. For instance, mantle xenoliths and xenocrysts in volcanic rocks provide a direct probe (cf. Griffin et al., 2009Griffin et al., , 2004. Petrological and geochemical studies of mantle xenoliths indicate that there is a significant difference in composition between the cratonic lithosphere in the western SCB and that in the eastern SCB. Due to the absence of abundant and spatially distributed mantle samples, however, the composition and evolution of the SCLM beneath the interior of the SCB are not well constrained (e.g.,

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Section: Phanerozoic Intraplate Magmatismmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermochemical State of the Upper Mantle Beneath South China From Multi‐Observable Probabilistic Inversion

Yang

Afonso

et al. 2021

JGR Solid Earth

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“…Some clinopyroxenes in the SSB from [24] and [28], clinopyroxene trends from other alkaline complexes are shown for comparison: green line [1]and orange line [33]. [34]; The pink solid line is the composition of clinopyroxenes in peridotite xenoliths in South China [34,36]; The purple solid line is clinopyroxenes in Hainan Cenozoic basalt are from [37]. Eu/Eu* = EuN/[SmN+GdN] 0.5 , Normalising values are after [38].…”

Section: Resultsmentioning

confidence: 99%

“…According to the comparison of major and trace element composition of B3 type clinopyroxenes in basalts of the SSB and clinopyroxenes in lithospheric mantle peridotite of South China [34,36]and Hannuoba granulite of North China Craton [35], green core clinopyroxenes have different mineral chemical characteristics similar to B1 type clinopyroxenes. Therefore, the origin possibility of green core trapping from lithospheric mantle or lower crustal granulite can be excluded, and the resorption and sieved textures in green core of B3 type clinopyroxene indicates that the genesis of green core clinopyroxene is more inclined to (1) the results of magma mixing and magma recharge.…”

Section: Genesis Of B3 Type Clinopyroxenesmentioning

confidence: 99%

“…Major elements and REEs vs. Mg# values in clinopyroxene from bimodal volcanic rocks in the SSB. The green solid line is the composition of clinopyroxenes in Hannuoba granulite (North China Craton)[34]; The pink solid line is the composition of clinopyroxenes in peridotite xenoliths in South China[34,36]; The purple solid line is clinopyroxenes in Hainan Cenozoic basalt are from[37]. Eu/Eu* = EuN/[SmN+GdN] 0.5 , Normalising values are after[38].…”

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confidence: 99%

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Geochemical Insights From Clinopyroxene Phenocrysts Into the Magma Evolution of an Alkaline Magmatic System From the Sanshui Basin, South China

Chen¹,

Fang²,

Yuan³

2021

Preprint

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The Sanshui Basin (SSB) is located at the northern continental margin of the South China Sea and characterized by a continental rift basin. The bimodal volcanic rocks in SSB record the early Cenozoic magmatic activity in the South China Block, on the magmatic evolution process of bimodal volcanic rocks are poorly understood. Clinopyroxenes in bimodal volcanic rocks in the SSB provide an opportunity to investigate the magma process during magma ascent. We classified nine types of clinopyroxene phenocrysts according to the different compositions and textures types in cogenetic basalt-trachyandesite-comenditic trachyte, the composition of unzoned clinopyroxene have an evolution sequence of diopside- hedenbergite- aegirine with the decrease of Mg#, and the trace element contents of unzoned clinopyroxenes also increase systematically during magma evolution, indicating that the genesis of clinopyroxene dominated by fractional crystallization in a closed magma system; however, the clinopyroxenes with reverse zoning and multiple zoning record the process of magma mixing and recharge indicating an open magma system. Whilst fractional crystallization is the dominated process, magma mixing, recharge, and crystal settling complicate magma evolution. Thermobarometric calculations show that clinopyroxene phenocrysts in bimodal volcanic rocks of SSB are distributed in the whole crust during magma ascent. We have established a magma plumbing system, which provides a new constrain for the complex magmatic evolution history in the SSB by detailed mineral-scale analysis.

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Nature and evolution of the Late Cretaceous lithospheric mantle beneath the eastern Jiangnan orogenic belt: constraints from peridotite xenoliths

Wang

Yan

Wang

et al. 2022

Contrib Mineral Petrol

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Composition and evolution of the lithospheric mantle beneath the interior of the South China Block: insights from trace elements and water contents of peridotite xenoliths

Cited by 15 publications

References 104 publications

Thermochemical State of the Upper Mantle Beneath South China From Multi‐Observable Probabilistic Inversion

Thermochemical State of the Upper Mantle Beneath South China From Multi‐Observable Probabilistic Inversion

Geochemical Insights From Clinopyroxene Phenocrysts Into the Magma Evolution of an Alkaline Magmatic System From the Sanshui Basin, South China

Nature and evolution of the Late Cretaceous lithospheric mantle beneath the eastern Jiangnan orogenic belt: constraints from peridotite xenoliths

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