Subduction-related middle Permian to early Triassic magmatism in central Hainan Island, South China

Shen, Linwei; Yu, Jianhua; O’Reilly, Suzanne Y.; Griffin, William L.; Zhou, Xianghui

doi:10.1016/j.lithos.2018.08.009

Cited by 33 publications

(27 citation statements)

References 61 publications

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“…245–230 Ma) collision between the Hainan and Indochina blocks might have been triggered by double‐sided subduction of oceanic crust as indicated by widespread Permian–Early Triassic arc‐related magmatic rocks on Hainan Island (e.g. Li et al., 2006; Shen et al., 2018; Wang et al, 1991b; Yan et al., 2017) and the northern margin of the Indochina blocks (e.g. Fan et al, 2010; Hieu et al., 2016; Kamvong et al., 2014; Liu et al., 2012; Qian et al., 2019; Wang et al., 2016).…”

Section: Discussionmentioning

confidence: 99%

“…strata are mainly Cretaceous red bed sequences composed of lacustrine facies clastic rocks (Jiang, Li, Collins, & Huang, 2015;Wang et al, 1991a). Granitoids account for ~40% of the island's total area (Figure 1b), of which ~60% are of Late , with the remainder being of Jurassic and Cretaceous ages (c. 150-70 Ma) Chen et al, 2014;Jiang & Li, 2014;Li, Yun, Fan, & Zhou, 2005;Li et al, 2006;Shen et al, 2018;Tang et al, 2013;Wang et al, 2012;Wang, Ma, & Jiang, 1991b;Xie et al, 2005Xie et al, , 2006Yan, Metcalfe, & Shi, 2017;our unpublished data). The E-W-trending Bangxi-Chenxing tectonic zone, which is inferred to represent an ancient suture based on the existence of Carboniferous MORB-like metabasalts Xu et al, 2008), occurs on the central island.…”

Section: Smentioning

confidence: 99%

“…280–230 Ma), with the remainder being of Jurassic and Cretaceous ages ( c . 150–70 Ma) (Chen, Wang, Fan, & Zhang, 2011; Chen et al., 2014; Jiang & Li, 2014; Li, Yun, Fan, & Zhou, 2005; Li et al., 2006; Shen et al., 2018; Tang et al., 2013; Wang et al., 2012; Wang, Ma, & Jiang, 1991b; Xie et al., 2005, 2006; Yan, Metcalfe, & Shi, 2017; our unpublished data). The E–W‐trending Bangxi–Chenxing tectonic zone, which is inferred to represent an ancient suture based on the existence of Carboniferous MORB‐like metabasalts (He, Wang, Qian, et al, 2018; He, Wang, Zhang, et al, 2018; Li, Zhou, et al, 2002; Xu et al., 2008), occurs on the central island.…”

Section: Geological Background and Samplingmentioning

confidence: 99%

“…Chen, Sun, Hsü, Dobson, & Yu, 1992; Hsü et al., 1990; Li, Zhou, et al, 2002; Metcalfe, Shergold, & Li, 1993; Yang, Yu, Guo, & Shi, 1989) as well as the tectonic evolution in relation to the eastern Palaeo‐Tethys and the Palaeo‐Pacific plate (e.g. Cai & Zhang, 2009; Faure, Chen, Feng, Shu, & Xu, 2017; Faure, Lin, Chu, & Lepvrier, 2016; He, Wang, Qian, & Zhang, 2018; He, Wang, Zhang, Qian, & Zhang, 2018; Li, Li, He, et al, 2012; Li, Li, Li, & Wang, 2006; Metcalfe, 1996, 2013; Shen, Yu, O’Reilly, Griffin, & Zhou, 2018; Zhang et al., 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Abbreviations: F.–fault, S.–suture. (b) Simplified geological map of Hainan Island, South China (modified after Guangdong BGMR, 1988; Shen et al., 2018)…”

Section: Introductionmentioning

confidence: 99%

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Carboniferous eclogite and garnet–omphacite granulite from northeastern Hainan Island, South China: Implications for the evolution of the eastern Palaeo‐Tethys

Liu

Chen

Wei

et al. 2020

Journal Metamorphic Geology

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High‐P (HP) eclogite and associated garnet–omphacite granulite have recently been discovered in the Mulantou area, northeastern Hainan Island, South China. These rocks consist mainly of garnet, omphacite, hornblende, quartz and rutile/ilmenite, with or without zoisite and plagioclase. Textural relationships, mineral compositions and thermobarometric calculations demonstrate that the eclogite and garnet–omphacite granulite share the same three‐stage metamorphic evolution, with prograde, peak and retrograde P−T conditions of 620–680°C and 8.7–11.1 kbar, 820–860°C and 17.0–18.2 kbar, and 700–730°C and 7.1–8.5 kbar respectively. Sensitive high‐resolution ion microprobe U–Pb zircon dating, coupled with the identification of mineral inclusions in zircon, reveals the formation of mafic protoliths before 355 Ma, prograde metamorphism at c. 340–330 Ma, peak to retrograde metamorphism at c. 310–300 Ma, and subsequent pegmatite intrusion at 295 Ma. Trace element geochemistry shows that most of the rocks have a MORB affinity, with initial εNd values of +2.4 to +6.7. As with similar transitional eclogite–HP granulite facies rocks in the thickened root in the European Variscan orogen, the occurrence of relatively high P−T metamorphic rocks of oceanic origin in northeastern Hainan Island suggests Carboniferous oceanic subduction leading to collision of the Hainan continental block, or at least part of it, with the South China Block in the eastern Palaeo‐Tethyan tectonic domain.

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Section: Discussionmentioning

confidence: 99%

Section: Smentioning

confidence: 99%

Section: Geological Background and Samplingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Abbreviations: F.–fault, S.–suture. (b) Simplified geological map of Hainan Island, South China (modified after Guangdong BGMR, 1988; Shen et al., 2018)…”

Section: Introductionmentioning

confidence: 99%

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Carboniferous eclogite and garnet–omphacite granulite from northeastern Hainan Island, South China: Implications for the evolution of the eastern Palaeo‐Tethys

Liu

Chen

Wei

et al. 2020

Journal Metamorphic Geology

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Geochronology and petrogenesis of Triassiclow‐Timafic intrusions in Funing: Implications for the tectonic evolution of Nanpanjiang Basin,SWChina

et al. 2021

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Petrogenesis and tectonic implications of late Permian and Triassic granitoids on Hainan Island, South China

Yin

Huang

et al. 2022

Geological Journal

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Hainan Island is a key part of the eastern Tethyan region and contains detailed geological information that can enhance our understanding of the tectonic evolution of this region since the late Palaeozoic. In this paper, we report geochronological, geochemical, and Sr–Nd isotopic data for granitoids from Baomei and Chahe in the northern part of Hainan Island. Three new zircon U–Pb ages of 243.3 ± 1.7 Ma, 237.1 ± 5.1 Ma, and 257.0 ± 4.0 Ma were obtained for these granitoids. The late Permian Chahe granite (257 Ma) is weakly peraluminous to peraluminous, and has rare earth element patterns and Ga/Al and FeOT/MgO ratios typical of A‐type granites formed in an extensional tectonic setting. The Middle Triassic Baomei granitoids (243–237 Ma) are weakly peraluminous, and exhibit a negative correlation between P2O5 and SiO2, which is typical of I‐type granites. All the granitoids have EM II‐type‐enriched mantle Sr–Nd isotopic compositions, which indicate that they were derived from a mantle source that had experienced enrichment and metasomatism. Hainan Island was in an extensional tectonic setting from the late Permian to Middle Triassic when widespread A‐ and I‐type granites were generated. We speculate that Hainan Island was mainly affected by the Tethyan tectonic domain during the Permian–Triassic, which involved closure of the Palaeo‐Tethys Ocean, collision of the Indochina and South China blocks, and subsequent post‐collisional extension.

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Subduction-related middle Permian to early Triassic magmatism in central Hainan Island, South China

Cited by 33 publications

References 61 publications

Carboniferous eclogite and garnet–omphacite granulite from northeastern Hainan Island, South China: Implications for the evolution of the eastern Palaeo‐Tethys

Carboniferous eclogite and garnet–omphacite granulite from northeastern Hainan Island, South China: Implications for the evolution of the eastern Palaeo‐Tethys

Geochronology and petrogenesis of Triassiclow‐Timafic intrusions in Funing: Implications for the tectonic evolution of Nanpanjiang Basin,SWChina

Petrogenesis and tectonic implications of late Permian and Triassic granitoids on Hainan Island, South China

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