Ages and geochemistry of granites in the Pingtan–Dongshan Metamorphic Belt, Coastal South China: New constraints on Late Mesozoic magmatic evolution

Liu, Qian; Yu, Jin Hai; Wang, Qin; Su, Bin; Zhou, MF; Xu, Haiyan; Cui, Xiang

doi:10.1016/j.lithos.2012.06.031

Cited by 117 publications

(64 citation statements)

References 85 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…S1) (Simonen, 1953) and previous reported zircon roundness analysis (FIGSR, 2001), which is in agreement with the interpretation of Liu et al (2012b) andFIGSR (2001).…”

Section: Petrographysupporting

confidence: 90%

“…Zircons from the Dongshan mica schists have  Hf (T) values of -4.7 to -1.4 and T DM C model ages of 1.49-1.28 Ga(Table S3),whereas zircons from the Putian mica schists have relatively higher  Hf (T) zircon grain dated at 195 Ma from sample 13SB2-2 yielded an initial  Hf (T) value of +4.9 and a  18 O value of 6.6‰.6 Discussion6.1 Zircon genesis: detrital or metamorphic/anatectic origin?Apart from one zircon (Spot 13SB2-2@20) giving an age of ~195 Ma and the narrow rims yielding ages between ~128 and ~99 Ma, all other zoned zircons from the Dongshan and Putian mica schists are dated at 131-148 Ma, with a peak at ~141 Ma (Fig. 5a), consistent with those reported byLiu et al (2012b) Liu et al (2012b). interpreted that the ~140 Ma zircons from the Dongshan mica schist were crystallized from anatectic melt during high grade metamorphism.…”

supporting

confidence: 75%

“…Sampling GPS are listed in Table S1. Previous studies considered that the sedimentary protoliths of mica schists in the CNMB were deposited in Paleozoic (Xie et al, 1986;Huang et al, 1989) or Jurassic (Liu et al, 2012b). Hornblende and mica 40 Ar/ 39 Ar ages of 133-88 Ma were interpreted as the timing of metamorphic or cooling ages of the schists (Wang and Lu, 2000;Chen et al, 2002).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…Hornblende and mica 40 Ar/ 39 Ar ages of 133-88 Ma were interpreted as the timing of metamorphic or cooling ages of the schists (Wang and Lu, 2000;Chen et al, 2002). More recently, Liu et al (2012b) reported a U-Pb age of ~143 Ma for zircons from these mica schists, and interpreted it as the timing of zircon crystallization from anatectic melts during high-grade metamorphism.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…Therefore, we considered that the majority of ~141 Ma zircons in the Dongshan and Putian mica schists were likely detrital zircons of magmatic origin, rather than metamorphic/anatectic origin as previously proposed(Liu et al, 2012b).…”

mentioning

confidence: 99%

See 4 more Smart Citations

The Early Cretaceous evolution of SE China: Insights from the Changle–Nan'ao Metamorphic Belt

Xing

et al. 2015

Lithos

View full text Add to dashboard Cite

“…S1) (Simonen, 1953) and previous reported zircon roundness analysis (FIGSR, 2001), which is in agreement with the interpretation of Liu et al (2012b) andFIGSR (2001).…”

Section: Petrographysupporting

confidence: 90%

supporting

confidence: 75%

Section: Accepted Manuscriptmentioning

confidence: 99%

Section: Accepted Manuscriptmentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

The Early Cretaceous evolution of SE China: Insights from the Changle–Nan'ao Metamorphic Belt

Xing

et al. 2015

Lithos

View full text Add to dashboard Cite

Spatiotemporal reconstruction of Late Mesozoic silicic large igneous province and related epithermal mineralization in South China: Insights from the Zhilingtou volcanic‐intrusive complex

Wang

Zhao

et al. 2016

JGR Solid Earth

View full text Add to dashboard Cite

Silicic large igneous provinces (SLIPs) generally reflect large‐scale melting of lower crustal materials and represent significant metal reservoirs. The South China Block‐Coastal Region (SCB‐CR) SLIP hosts several large epithermal deposits. To better understand these deposits, we document the spatiotemporal framework of the host SLIP across the SCB‐CR. Using zircon U‐Pb dating and geochemical and isotopic analysis, we identify four stages of emplacement. Stage 1 felsophyre (circa 149 Ma) shows a chemical affinity to highly fractionated I‐type granites. Stages 2 and 3 of low‐Mg felsic volcanics (circa 128 to 111 Ma) and stage 4 felsite (circa 100 Ma) have higher εHf(t) and εNd(t) values than stage 1 felsophyre, suggesting a significant contribution of newly underplated juvenile crust to the magma sources. Stage 4 diabase (circa 101 Ma) was likely produced by melting of subduction˗metasomatized asthenospheric mantle. Together with reliable published data, we build a new spatiotemporal framework of volcanics and infer that the majority of the SCB‐CR SLIP was related to the gradual northwestward subduction of the Izanagi plate beneath South China in a continental arc setting during circa 170 to 110 Ma, and minor contribution was from the eastward retreat of the subducting slab in a back‐arc setting during circa 110 to 90 Ma. We conclude that the large‐scale epithermal mineralization was generated by melting of the metal‐rich, thin (30–40 km), newly underplated hydrous juvenile crust during the tectonic transition from arc to back‐arc settings.

show abstract

Tracing an Early Jurassic magmatic arc from South to East China Seas

Zhang

et al. 2017

Tectonics

115

View full text Add to dashboard Cite

Drilling has revealed suites of magnesian granite and diorite emplaced in Early Jurassic time (198–195 Ma) and an arc‐related low‐temperature (678 to 696°C) magmatism in NE South China Sea. These rocks have 87Sr/86Sri (0.705494 to 0.706623) and εNdt (−0.9 to +2.2) as evidence of evolved mantle‐derived magmas, coupled with enriched fluid‐mobile elements Cs to K and Pb implying involvement of subduction‐zone fluids. Another Early Jurassic granodiorite (zircon U‐Pb 187 Ma) drilled from the SW East China Sea, a magnesian high‐K calc alkaline, is comparably confined to a range of low‐temperature (~675°C) arc‐related granite, characterized by enrichment of fluid‐mobile elements and Nb‐Ta depletion. Its Sr‐Nd isotopes (87Sr/86Sri = 0.705200, εNdt = 1.1) suggest a product of evolved mantle‐derived melts. Together with detrital igneous zircons from Paleocene sequences, these observations reveal an Early Jurassic arc‐related low‐temperature (600 to 740°C) magmatism in the SW East China Sea. These arc‐related granitoids, along with those from SE Taiwan, could define an Early Jurassic NE‐SW trending Dongsha‐Talun‐Yandang magmatic arc zone along the East Asian continental margin paired with Jurassic accretionary complexes from SW Japan, East Taiwan to the West Philippines. This arc‐subduction complex assembly was associated with oblique subduction of the paleo‐Pacific slab beneath Eurasia, presumably responsible for Early Jurassic lithospheric extension in south China block.

show abstract

Ages and geochemistry of granites in the Pingtan–Dongshan Metamorphic Belt, Coastal South China: New constraints on Late Mesozoic magmatic evolution

Cited by 117 publications

References 85 publications

The Early Cretaceous evolution of SE China: Insights from the Changle–Nan'ao Metamorphic Belt

The Early Cretaceous evolution of SE China: Insights from the Changle–Nan'ao Metamorphic Belt

Spatiotemporal reconstruction of Late Mesozoic silicic large igneous province and related epithermal mineralization in South China: Insights from the Zhilingtou volcanic‐intrusive complex

Tracing an Early Jurassic magmatic arc from South to East China Seas

Contact Info

Product

Resources

About