A Triassic granodioritic pluton with mafic microgranular enclaves (MMEs) in central South China provides an important insight into crust-mantle interaction. Here we present a comprehensive study of fieldwork, geochronology, geochemistry, and Sr-Nd-Hf isotopes for the Taojiang granodioritic host and the MMEs in central South China.
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The Indosinian granites are widespread in the South China block (SCB) and can give significant information regarding the early Mesozoic tectonic evolution of the SCB. A comprehensive geochronological and geochemical study is carried out on the Gaozhou gneissic granites from the Yunkai massif, in the southern part of the SCB. ...
The interior of South China Block hosts early Jurassic A 1 - and A 2-type granites.. The low-δ 18 O A 1-type granites contain recycled lower oceanic crustal component.. Flat-slab subduction reached ∼800 km inland of SCB from the trench at ∼190 Ma.
Petrogenetic differences between the Middle-Late Jurassic Cu-Pb-Zn-bearing and W-bearing granites in the Nanling Range, South China: A case study of the Tongshanling and Weijia deposits in southern Hunan Province.
Major element and trace element compositions, and Sr, Nd and Pb isotopic compositions for postcollisional granites from the Laoshan granitic complex, in the eastern side of the Triassic suture between the South China and North China tectonic blocks were determined. The granites are alkaline, A-type and can be further classified as A1 granites.
North China Craton Neoproterozoic granites Jiayuguan Helanshan Complex Zhuozishan B eidashan Complex Archean- rocksPaleoproterozoic Fig. 2. Distributions of Precambrian basement rocks in the Alxa Block and adjacent areas (modified from Dan and others, 2012b). N 4 km Cretaceous-Quaternary sediementary rocks Phanerozoic granites …
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Unravelling the genetic relationship between pegmatites and granites in the Jiajika Li-Be polymetallic district, Songpan-Ganze Orogenic Belt, Southwestern China: Insights from monazite U-Pb geochronology and trace element geochemistry
cow granites in china. A-type granite belts of two chemical subgroups in central eastern China. 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 ...
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.
Oxygen fugacity (fo 2) of magmas exerts an important control on the speciation of multivalent elements in magmatic-hydrothermal processes, which has a great significance for mineralization.This paper examines the relationships between oxygen fugacity and mineralization associated with Yanshanian (Jurassic to Cretaceous) …
Widespread Late Mesozoic granites in South China are known to be younger southeastward, which is important for understanding the tectonic-magmatic evolution in South China. However, previous studies assumed Jurassic or Late Cretaceous ages for some granites in the Nan'ao Island, contradicting with the established trend.
cow granites in china. Some progress on understanding the Phanerozoic granitoids in China. ... China Granites wholesale - Select 2024 high quality Granites products in best price from certified Chinese Marble manufacturers, Granite Tile suppliers, wholesalers and factory on Made-in-China.
Origin of the Low δ18O Signals in Zircons from the Early Cretaceous A-Type Granites in Eastern China 1417 Figure 2. Field and microscopic photographs of the KLS granites showing (a) the intrusion into the rhyolite of Zhangjiakou Formation, ( …
PDF | On Jun 21, 2009, Jianjun Lu and others published The characteristics of the tin-bearing granites in the middle of Nanling Range, South China | Find, read and cite all the research you need ...
The granites in NE China have some similarities to A-type in their field and petrographic characteristics. However, they do not contain mafic alkaline minerals such as arfvedsonite, riebeckite, etc. The relatively low contents of Zr, Nb, Y, La, Ce, Zn and Ga strongly suggest that they belong to I-type.
The northern margin of the North China Craton (NCC) is characterized by widespread Late Paleozoic granites (Fig. 1), which contain significant information about tectonic evolution of North China and have attracted the attention of geologists for decades.Previous studies indicated that Middle to Late Permian A-type granites and bimodal magmatic rocks are …
Sodic adakitic granites in the East Kunlun Orogen, China: Partial melting of ultrahigh-pressure metamorphic terranes during continental collision
Here we provide evidence for plume-slab interaction mainly based on in situ zircon Hf-O isotope analyses, as well as whole-rock elemental and Sr-Nd-Hf isotope analyses, on the Late Permian and Early Triassic A-type granites on the margin of the Emeishan LIP in SW China. These granites show typical A-type geochemical characters, such as high ...
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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 Jian Xu 1,2, Xiao-Ping Xia 2,†, Qiang Wang 1,2 ...
Abstract Northwest Zhejiang Province (NWZJ) is located in the southeastern Lower Yangtze River Belt, southeastern China. Here we document the occurrence of both magnesian (149–131 Ma) and ferroan (162–121 Ma) granitoids in NWZJ. The magnesian granitoids are calc-alkalic peraluminous in composition, with a wide range of SiO2 (58–72 wt%) …
Granite is one of the most important components of the continental crust on our Earth; it thus has been an enduring studied subject in geology. According to present knowledge, granite shows a great deal of heterogeneity in terms of its texture, structure, mineral species and geochemical compositions at different scales from small dike to …
Biotite granites and muscovite-bearing granites are dominant rock types of the widespread granites in SE China. However, their petrogenesis has been enigmatic. A combined study of zircon U-Pb dating and Lu-Hf isotopes, whole-rock element geochemistry and Sr-Nd-O isotopes was performed for three late Mesozoic granitic plutons (Xinfengjie, Jiangbei …
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Voluminous Mesozoic intra-continental granitic rocks occur in South China, which provide insights into the processes and associated P-T conditions of …
Two types of spatially and temporally associated Jurassic granitic rocks, I-type and A-type, occur as pluton pairs in several locations in southern Hunan Province, South China.