The Indosinian collision–extension event between the South China Block and the Palaeo-Pacific plate: Evidence from Indosinian alkaline granitic rocks in Dashuang, eastern Zhejiang, South China

Mao, Jianren; Ye, Haimin; Liu, Kai; Li, Zilong; Takahashi, Yutaka; Zhao, Xilin; Kee, Weon-Seo

doi:10.1016/j.lithos.2013.04.004

Cited by 85 publications

(19 citation statements)

References 54 publications

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“…Two samples yielded Ishihara and Orihashi (2014), Hieu et al (2015) and Halpin et al (2016). Similar magmatic activity is reported from SE China by Shao et al (1995), Yu et al (2010), Deng et al (2012, and Mao et al (2013), and from Hainan Island by Li et al (2006) and Jiang et al (2015). Gatinsky et al (1984) and Hutchison (1989) suggested west-directed subduction could be traced southwards from the Kontum Massif in eastern Vietnam.…”

Section: Triassic Metamorphismsupporting

confidence: 73%

A Triassic to Cretaceous Sundaland–Pacific subduction margin in West Sarawak, Borneo

et al. 2017

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Metamorphic rocks in West Sarawak are poorly exposed and studied. They were previously assumed to be pre-Carboniferous basement but had never been dated. New 40 Ar/ 39 Ar ages from white mica in quartz-mica schists reveal metamorphism between c. 216 to 220 Ma. The metamorphic rocks are associated with Triassic acid and basic igneous rocks, which indicate widespread magmatism. New U-Pb dating of zircons from the Jagoi Granodiorite indicate Triassic magmatism at c. 208 Ma and c. 240 Ma. U-Pb dating of zircons from volcaniclastic sediments of the Sadong and Kuching Formations confirm contemporaneous volcanism. The magmatic activity is interpreted to represent a Triassic subduction margin in westernmost West Sarawak with sediments deposited in a forearc basin derived from the magmatic arc at the Sundaland-Pacific margin. West Sarawak and NW Kalimantan are underlain by continental crust that was already part of Sundaland or accreted to Sundaland in the Triassic. One metabasite sample, also previously assumed to be pre-Carboniferous basement, yielded Early Cretaceous 40 Ar/ 39 Ar ages. They are interpreted to indicate resumption of subduction which led to deposition of volcaniclastic sediments and widespread magmatism. U-Pb ages from detrital zircons in the Cretaceous Pedawan Formation are similar to those from the Schwaner granites of NW Kalimantan, and the Pedawan Formation is interpreted as part of a Cretaceous forearc basin containing material eroded from a magmatic arc that extended from Vietnam to west Borneo. The youngest U-Pb ages from zircons in a tuff layer from the uppermost part of the Pedawan Formation indicate volcanic activity continued until c. 86 to 88 Ma when subduction terminated.

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Section: Triassic Metamorphismsupporting

confidence: 73%

A Triassic to Cretaceous Sundaland–Pacific subduction margin in West Sarawak, Borneo

et al. 2017

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“…Triassic deformation is widely acknowledged across the SCB, with Indosinian tectonism driven by subduction of the Paleo-Pacific plate (e.g., Li and Li, 2007;Zhu et al, 2013;Mao et al, 2013;Wang et al, 2013). Emplacement of the Chencai Complex over the Lipu-Huangshan quartz diorite and resulting erosional exhumation of the Chencai Complex are consistent with thrust deformation recognized across the SCB at this time (Hsu et al, 1988;Xiao and He, 2005).…”

Section: Regional Correlations and Tectonic Implicationsmentioning

confidence: 52%

“…This unit exhibits a porphyritic texture defined by Kfeldspar phenocrysts, and is deeply tectonically ambiguous, with different workers ascribing its emplacement to either an extensional setting (e.g., Mao et al, 2013) or to crustal thickening and partial melting driven by flat-slab subduction of the Paleo-Pacific plate (Zhu et al, 2013;Xu et al, 2013). The late Triassic Wuzao Formation unconformably overlies these older units, and consists of conglomerate, coarse textured sandstone, sandstone, and mudstone intercalated with minor coal measures.…”

Section: Field Geology and Sample Descriptionsmentioning

confidence: 99%

Tectonothermal history of the NE Jiangshan–Shaoxing suture zone: Evidence from 40Ar/39Ar and fission-track thermochronology in the Chencai region

Wang

Chen

Batt

et al. 2015

Precambrian Research

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“…The Nanling region, located in the central section of SCB, is comprised of Guangxi, Guangdong, Hunan, and Jiangxi province occupying an area of 170,000 km 2 [46]. This region has undergone several significant tectonic-magmatic events, the most famous of which are the Indosinian and Yanshanian tectonic events during the Mesozoic [47][48][49][50][51][52][53]. Due to the superior metallogenic geotectonic setting, it is characterized by widespread igneous rocks and numerous large-scale W-Sn polymetallic deposits [2,3,16,20,54,55].…”

Section: Geological Settingmentioning

confidence: 99%

Geochronology and Genesis of the Xitian W-Sn Polymetallic Deposit in Eastern Hunan Province, South China: Evidence from Zircon U-Pb and Muscovite Ar-Ar Dating, Petrochemistry, and Wolframite Sr-Nd-Pb Isotopes

Cao

Yang

et al. 2018

Minerals

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Abstract:The recently explored Xitian tungsten-tin (W-Sn) polymetallic ore field, located in Hunan province, South China, is one of the largest ore fields in the Nanling Range (NLR). Two major metallogenic types appeared in this ore field, skarn-and quartz vein-type. They are distributed within Longshang, Heshuxia, Shaiheling, Hejiangkou, Goudalan, and so on. Hydrothermal zircons from two altered granites yielded U-Pb ages of 152.8 ± 1.1 Ma, and 226.0 ± 2.8 Ma, respectively. Two muscovite samples from ore-bearing quartz vein yielded 40 Ar/ 39 Ar plateau ages of 156.6 ± 0.7 Ma, 149.5 ± 0.8 Ma, respectively. Combined with the geological evidence, two metallogenic events are proposed in the Xitian ore field, with skarn-type W-Sn mineralization in Late Triassic (Indosinian) and quartz vein/greisen type W-Sn mineralization in Late Jurassic (Yanshanian). The relatively low Ce/Ce* ratios and high Y/Ho ratios in zircons from two altered granites indicate that the hydrothermal fluids of two metallogenic events are characterized by low oxygen fugacities and enrichment in F. The similar chondrite-normalized patterns between the skarn and Xitian Indosinian granites and Sr-Nd-Pb isotopic compositions of wolframite suggest that the metal sources for both types W-Sn mineralization are derived from a crustal source.

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The Indosinian collision–extension event between the South China Block and the Palaeo-Pacific plate: Evidence from Indosinian alkaline granitic rocks in Dashuang, eastern Zhejiang, South China

Cited by 85 publications

References 54 publications

A Triassic to Cretaceous Sundaland–Pacific subduction margin in West Sarawak, Borneo

A Triassic to Cretaceous Sundaland–Pacific subduction margin in West Sarawak, Borneo

Tectonothermal history of the NE Jiangshan–Shaoxing suture zone: Evidence from 40Ar/39Ar and fission-track thermochronology in the Chencai region

Geochronology and Genesis of the Xitian W-Sn Polymetallic Deposit in Eastern Hunan Province, South China: Evidence from Zircon U-Pb and Muscovite Ar-Ar Dating, Petrochemistry, and Wolframite Sr-Nd-Pb Isotopes

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