Early Cretaceous A-type granites in the Lower Yangtze River belt, central eastern China, with both A 1 and A 2 chemical subgroups, formed at 125 ± 2 Ma, after a Cretaceous ridge subduction. Remarkably, A 1 and A 2 group granites are distributed in three zones, roughly parallel to each other and to a slightly older adakite belt. In general, …
The Paleozoic granites are important parts and widespread in the eastern SCB (Fig. 1).They occur as laccoliths and batholiths to the east of the Anhua–Luocheng fault, and are usually of large volume with a total exposure area of over 20,000 km 2.Studies on the Paleozoic granites are relatively fewer due to less economic mineralization than …
The alkaline granites on the north of the North China-Tarim cratons are believed to be related to mantle-driving source, such as young accretion or metasomatic mantle (Niu XL et al., 2016). But most alkaline granites in South China and North China carton are considered as the magma mixing of crust and mantle (Wang T et al., 2015).
We present new field observations, whole-rock major and trace elements, Sr-Nd-Pb-Hf isotopes and zircon U Pb ages for the Mesozoic granites in the Mufushan complex, eastern South China. The age determinations by LA-ICP-MS U Pb dating of zircons indicate that the porphyritic biotite granites and two-mica monzogranites have …
Here we present Early Jurassic A-type granites in southeast (SE) China as an example of a shallow (ca. 15–20-km depth), igneous, crust-derived A-type granite.
The Triassic granites and their coeval magmatic rocks are distributed in three different zones in South China. •. The Triassic granites were mainly originated from the Neoproterozoic sedimentary and igneous rocks. •. There is no petrogenetic link between …
In northeastern China (NE China), immense volumes of granitic rocks were emplaced during the Phanerozoic, and many of them are known to contain a large proportion of juvenile crustal material Jahn et al., 2000, Wu et al., 2000.Among the large number of granitic bodies, about 40 A-type granitic plutons have been recognized (Fig. …
A number of Late Mesozoic (∼130 Ma) A-type granitic plutons have been identified in Southeast China.Here we investigate the petrogenesis of one of these granitic plutons in Southeast China, the Sanqingshan–Damaoshan (SD) granites in northeastern Jiangxi Province, using zircon U–Pb geochronology, Hf isotopic analyses, and major and …
Granites of NE China are shown to have a wide range of 87 Sr/ 86 Sr ratios but mostly positive ε Nd (t) values for Group I and negative ε Nd (t) values for Group II granites. (In order to make the figure more sensible, only the samples with 87 Rb / 86 Sr <10 had been chosen for plotting, because the calculated initial 87 Sr/ 86 Sr ratios for ...
1637 types of different color Granite in China,such as : G603 Granite,G654 Granite,G664 Granite,China Pearl White Granite,Butterfly Blue Granite. Products. Products; Suppliers; Stone Library ... variations in color are due to the different mineral compositions and geological formations that occur during the granites formation process. Each slab ...
Granitoid (senso lato, granite, seusu stricto) is one of the most important constituents of the Earth's continental crust and is unique in the solar system.Its formation is largely the result of mass and/or heat transfer from the mantle to the crust in a variety of tectonic settings. Therefore, granitoid plays an important role in deciphering both crustal …
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Deciphering the geochemical diversity of S-type granites is crucial for obtaining more profound insight into their petrogenesis.We therefore undertook an integrated study of whole-rock geochemistry, Sr-Nd isotopes, and zircon U-Pb-Hf isotopes for newly recognized Late Mesoproterozoic S-type granites, including two-mica-, biotite-, …
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Section snippets Geological background. The North China Craton (NCC) is one of the oldest cratonic blocks in the world as old as 4.0 Ga (Wan et al., 2021), which is bounded by the Central Asian Orogenic Belt to the north and the Qinling-Dabie and Sulu Orogenic belts to the south (Fig. 1a) (Liu et al., 2008, Wu et al., 2008, Zhai and Santosh, …
Jun Yan, School of Resource and Environmental Engineering, Hefei University of Technology, Hefei 230009, China. Email: [email protected]. Bingquan Xiang, Anhui Key Laboratory of Green Building and Assembly Construction, Anhui Institute of Building Research & Design, Hefei 230031, China. Email: 159571214@qq. Search for more …
There are two groups of Paleoproterozoic granites in the Liaoji Belt, including dominantly metamorphosed gneissic granodiorite-granite with zircon ages from 2.2 to 2.1 Ga (Hao et al. 2004; Lu et al. 2006), and subordinate un-metamorphosed syenite-granite with zircon ages of ca. 1.84–1.87 Ga (Li et al. 2003; Cai et al. 2002; Lu et al. 2004).The …
In northeastern (NE) China, huge area of granites have been divided into Early–Middle Jurassic (190–150 Ma) and Early Cretaceous (135–120 Ma), although many were previously thought to have formed during the Paleozoic (Wu et al., 2011). More detailed isotopic age determinations indicated that the Jurassic magmatism shows a …
The Suzhou granite suite is the anorogenic product, which is located on the inactive continental margin of east China. It was emplaced about 141 Ma ago, occurring as a stock with a polygonal outline on the surface, belonging to alkali potash-feldspar granites with K2O > Na2O, Reit's alkali coefficient = 0.694, SiO2 = 74.95, and Al2O3/(K2O + …
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Here we present Early Jurassic A-type granites in southeast (SE) China as an example of a shallow (ca. 15–20-km depth), igneous, crust-derived A-type granite. We present detailed laser ablation ICP-MS zircon U-Pb dating and major- and trace-element and Sr-Nd isotopic data for these granites and assess their origin and relationship to the ...
Low-δ18O A-type granites in SW China Geological Society of America Bulletin, v. 130, no. XX/XX 3 thickness ranging from several hundred meters in the east (e.g., Guizhou) to 5000m in the west
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Rapakivi granites are not only typical Proterozoic as in the North China Craton, but were also emplaced during Paleozoic and Mesozoic in the Kunlun-Qinling …
Highlights Multiple granites occur in the Pingtan–Dongshan Metamorphic Belt, South China. Early Yanshanian and early Late Yanshanian granites have different chemical features. They were generated under different conditions. These two periods of granites exhibit different distribution regions. They result from different subduction …
The granite weathering profiles in China are mostly developed in the Guangdong, Fujian and Hainan provinces. Therefore, the compiled papers basically represent the current level of research on weathered granites in South China. Download : Download full-size image; Fig. 1. Distribution of granites in China.
Petrogenesis and tectonic setting of the Middle Permian A-type granites in Altay, northwestern China: Evidences from geochronological, geochemical, and Hf isotopic studies. ... and Hf isotopic data of these granites. The Jiangjunshan and Dakalasu alkali-feldspar granites show a high content of SiO 2 (72.05–73.27 and 69.55–71.04 wt%, ...
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Low-δ18O A-type granites in SW China: Evidence for the interaction between the subducted Paleotethyan slab and the Emeishan mantle plume | GSA …
The Jurassic granites in South China, which mainly consist of biotite granite, two-mica granite and muscovite granite, have already been differentiated into S- and I-type by previous studies (Chen and Jahn, 1998; Zeng et al., 2001; Hua et al., 2003; Yang et al., 2016).The S-type granites were interpreted to be derived from the regional …
Nd-Sr-O isotopic geochemistry constraints on the age and origin of the A-type granites in eastern China. Acta Petrol. Sinica, 17 (2001), pp. 95-111 (in Chinese with English abstract) View in Scopus Google Scholar. Wu, 2009. Y.B. Wu. Multi-stage evolution of continental collision orogen: a case study for western Dabie orogen.
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@article{Li2024LithiumIF, title={Lithium isotope fractionation in highly evolved granites and associated magmatic-hydrothermal process: the case of the Xintianling granites in the Nanling Range, South China}, author={Xunfei Li and Zhiqiang Wang and Bin Chen and Chao Huang and Xiaoxia Duan}, journal={International Geology Review}, year={2024 ...
a State Key Laboratory for Mineral Deposits Research, Nanjing University, Nanjing 210093, China b Department of Earth Sciences, University of Adelaide, Adelaide, SA 5005, Australia ... Early Mesozoic granites in the Nanling Belt, South China: Implications for intracontinental tectonics associated with stress regime transformation ...
The late Permian–Triassic granites in the South China Block (SCB) have important tectonic significance for the evolution of East Asia. Most of the intrusive bodies in the central SCB consist of S-type granites. Here, we report the first unambiguous discovery of Wengshan aluminous A-type granites in southwest Zhejiang Province, southeast China.
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1. Introduction. Granites have been intensively studied because the formation process is closely connected to crustal evolution and crust-mantle interactions, which contribute to the mechanical weakening of the crust throughout episodes of mountain building (e.g., Hopkinson et al., 2017).However, granites display great diversity, the …
Highlights SIMS zircon U Pb ages are 157 ± 1 Ma, 161 ± 3 Ma, 159 ± 2 Ma and 158 ± 2 Ma respectively. The Xihuashan granites are high evolved I–S transformation-type. Granites were derived from Late Paleo proterozoic to Early Mesoproterozoic lower crust. Fluid/melt interaction produces REE tetrad effect in the second and third phases. …