Triassic granites in South China: A geochemical perspective on their characteristics, petrogenesis, and tectonic significance

Gao, Peng; Zheng, Yong‐Fei; Zhao, Zi‐Fu

doi:10.1016/j.earscirev.2017.07.016

Cited by 119 publications

(62 citation statements)

References 188 publications

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“…Together, these model ages, when supported by other geological constraints i.e. zircon U-Pb inheritance, can be used to infer the rock's journey from the mantle to crust (Arndt and Goldstein, 1987;Gao et al, 2017;McCulloch, 1987).…”

Section: Spatial Distribution Of the Isotopic Signatures In Thailand mentioning

confidence: 92%

“…There are two main events that led to this granite emplacement: the Permo-Triassic closure of the Palaeo-Tethys Ocean (and the resultant Indosinian Orogeny) and the Mesozoic-Paleogene closure of the Neo-Tethys Ocean (Gardiner et al, 2016;Searle et al, 2012;Sone and Metcalfe, 2008). The Indosinian Orogeny currently encompasses all late Paleozoic to early Mesozoic orogenesis throughout Asia: from China (Gao et al, 2017;Li et al, 2004), Vietnam (Halpin et al, 2016;Lepvrier et al, 2004), to Thailand (e.g. Barr and Macdonald, 1991;Metcalfe, 2013;Sone and Metcalfe, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Probing into Thailand’s basement: New insights from U–Pb geochronology, Sr, Sm–Nd, Pb and Lu–Hf isotopic systems from granitoids

Dew

Collins

Glorie

et al. 2018

Lithos

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Section: Spatial Distribution Of the Isotopic Signatures In Thailand mentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Probing into Thailand’s basement: New insights from U–Pb geochronology, Sr, Sm–Nd, Pb and Lu–Hf isotopic systems from granitoids

Dew

Collins

Glorie

et al. 2018

Lithos

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“…In the XZMP, intrusive rocks are mostly observed to outcrop at the margins of the Shaoyang Basin and are dominated by Late Triassic granites and subordinate Devonian granitoids (Figure 1b, [33,[39][40][41][42]. Numerous zircon SHRIMP and LA-ICP-MS U-Pb ages demonstrate that extensive Late Triassic granites were emplaced between 228 and 201 Ma in the XZMP [29].…”

Section: Regional Geologymentioning

confidence: 99%

“…This interpretation means the oreforming fluids were relatively reduced. [41]. The ( 87 Sr/ 86 Sr)(t = 210 Ma) ratios for Banxi Group basement strata are from Peng and Frei [12].…”

Section: Genesis Of the Longshan Sb-au Depositmentioning

confidence: 99%

“…(a) Comparison of Mo content (ppm) in scheelite from different type of deposits; (b) Plot of 87 Sr/ 86 Sr ratios for scheelite from the from the Longshan Sb-Au deposit, South China. The ( 87 Sr/ 86 Sr) (t = 210 Ma) ratios for Late Triassic granites are from Gao et al[41]. The ( 87 Sr/ 86 Sr)(t = 210 Ma) ratios for Banxi Group basement strata are from Peng and Frei[12].…”

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confidence: 99%

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Sm-Nd Dating and In-Situ LA-ICP-MS Trace Element Analyses of Scheelite from the Longshan Sb-Au Deposit, Xiangzhong Metallogenic Province, South China

et al. 2019

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Longshan is an important Sb-Au ore deposit (3.7 Mt @4.5 wt. % Sb and 4.6 g/t Au) in the Xiangzhong metallogenic province (XZMP), South China. In the present work, trace element composition, Sm-Nd isotope dating, and Sr isotope of scheelite from the Longshan Sb-Au deposit are used to constrain the genesis of the deposit. Based on mineral assemblages and geological characteristics, two types of scheelites can be distinguished (Sch1 and Sch2). Sch1 is granular and cemented by stibnite, while Sch2 is commonly present in stibnite, pyrite, calcite, and quartz veins, indicating that Sch2 is later than Sch1. The Sm-Nd isochron age defined by Sch1 is 210 ± 2 Ma (MSWD = 1.0, n = 4). This age is interpreted as the age of Sb-Au mineralization and overlaps with the 201–228 Ma granitic rocks in the XZMP. Sch1 exhibits high ΣREE + Y contents (43.5 to 104 ppm), low Sr values (2687 to 6318 ppm, average of 4018 ppm), and a narrow range of 87Sr/86Sr values (0.7209 to 0.7210, average of 0.7209). In contrast, the elevated Sr abundance (4525 to 11,040 ppm, average of 6874 ppm) and wide 87Sr/86Sr ratios (0.7209 to 0.7228, average of 0.7214) in Sch2 were possibly caused by fluid-rock interaction mixing with Sr-enriched basement rocks. Sulfides have a narrow range of δ34S values of −1.8‰ to 3.2‰, with an average value of 1.1‰ (n = 7). Geochronological, geochemical and isotopic data suggest that the Longshan Sb-Au deposit is possible genetically related to the Late Triassic granitic intrusion in the XZMP.

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Low-temperature thermochronology data from the eastern South China Block decipher episodic subduction of the Paleo-Pacific Plate

Danišík

et al. 2021

Preprint

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Mesozoic subduction of the Paleo-Pacific Plate triggered intense tectonism, magmatism, and metallogeny in the eastern South China Block (E-SCB) and set off long-term tectonic, topographic, and climatic responses. However, contrasting hypotheses have been proposed to interpret the timing, style, and evolution of this oceanic subduction. Unraveling the exhumation history of the E-SCB is crucial to understanding deep subduction processes. To address the poorly documented exhumation history of the E-SCB, we present first zircon and apatite (U-Th)/He dates from eight Mesozoic granitoids distributed in a lateral profile across the intracontinental E-SCB. These data are combined with a compilation of regional thermochronological data, in order to address the evolution of the E-SCB in a tectonic, topographic, and climatic evolution framework. Zircon and apatite (U-Th)/He central ages of the investigated plutons range from 146-30 Ma and 82-31 Ma, respectively, implying long-lived exhumation of the intracontinental E-SCB. Inverse thermal modelling indicates the intracontinental SCB underwent multi-phase exhumation events from the Jurassic, despite variable onset timing and the fact that the far intracontinental E-SCB had been an exhumation center prior to the Early Cretaceous. In addition, a compilation map of regional thermochronological data reveals propagation of the exhumation center from the intracontinental to the epicontinental E-SCB over time (from the Cretaceous to the Paleogene). Based on these results, we propose a refined model of Paleo-Pacific Plate subduction since the Triassic. This model is in good agreement with geological observations in the E-SCB and capable of explaining regional magmatism, metallogeny, tectonism, and exhumation.Hosted file supporting information.docx available at https://authorea.com/users/529417/articles/597095low-temperature-thermochronology-data-from-the-eastern-south-china-block-decipherepisodic-subduction-of-the-paleo-pacific-plate

show abstract

Triassic granites in South China: A geochemical perspective on their characteristics, petrogenesis, and tectonic significance

Cited by 119 publications

References 188 publications

Probing into Thailand’s basement: New insights from U–Pb geochronology, Sr, Sm–Nd, Pb and Lu–Hf isotopic systems from granitoids

Probing into Thailand’s basement: New insights from U–Pb geochronology, Sr, Sm–Nd, Pb and Lu–Hf isotopic systems from granitoids

Sm-Nd Dating and In-Situ LA-ICP-MS Trace Element Analyses of Scheelite from the Longshan Sb-Au Deposit, Xiangzhong Metallogenic Province, South China

Low-temperature thermochronology data from the eastern South China Block decipher episodic subduction of the Paleo-Pacific Plate

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