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S-type peraluminous granite can crop out in various tectonic settings. The Paleozoic Piaochi granitic intrusion is a large S-type peraluminous intrusion located in the North Qinling orogen, and has important implication for its tectonic evolution. Though intensively studied, the age and tectonic setting of this intrusion are still controversial. In this study, we carried out an integrated study of...
Accretionary orogenic belts are considered the most important sites for the generation of continental crust. However, it is still not very clear whether in such settings the continental crust has been significantly transported back to the mantle accompanied with its lateral growth. Continental UHP rocks, the best indicators of the recycling of the continental crust, have rarely been discovered in...
The Erhongwa mafic–ultramafic intrusion is located in the southern margin of the Central Asian Orogenic Belt in northern Xinjiang where many early-Permian mafic–ultramafic intrusions host important Ni–Cu sulfide deposits. In this paper we report zircon U–Pb age, olivine chemistry and integrated whole-rock chemical and isotopic compositions for the Erhongwa mafic–ultramafic intrusion. This intrusion...
The Changhai area is located in the southeastern part of the Liaonan Complex within the Eastern Block of the North China Craton (NCC) in China. Early Precambrian rocks in this area consist mainly of various types of gneisses and schists. We present cathodoluminescence images, U–Pb dates, and trace element and Hf isotope data for zircons from these rocks in order to constrain the formation and evolution...
Cenozoic volcanic rocks are widespread in eastern China. These rocks have variable isotope compositions, reflecting different mantle sources under SE and NE China. In order to explore their PGE variations, chalcophile elements are determined for basalts from Leiqiong and Sanshui and andesites from Lianping in SE China. Basalts from Leiqiong have higher Ni (66–376ppm) and Cu (30–73ppm) contents than...
Permian basalts are widely distributed in the Tarim Basin and surrounding areas of NW China. The magmatism is represented by basaltic flows in Keping and mafic and ultramafic dykes in Silurian–Devonian strata in Bachu, southwestern Tarim Basin. The basalts in Keping have SiO 2 (44.1%–55.5 wt.%) and total alkalis (Na 2 O+K 2 O=3.20–7.79 wt.%) similar to the mafic dykes in Bachu,...
The South Tianshan orogenic belt, the southwestern extension of the Central Asian orogenic belt, separates the Yili–Central Tianshan block to the north from the Tarim block to the south. This belt is marked by a Proterozoic metamorphic complex, ophiolites, granitoids, mafic intrusions and younger high-pressure and low-temperature metamorphic rocks. The Jingbulake mafic intrusion in this belt is a...
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