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Xiaoping Xia
Chinese Academy of Sciences
134Publications
34H-index
5,426Citations
Publications 142
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The determination of original boron (B) isotopic composition in altered basaltic glass is important to characterize magma generation and evolution in the mantle. The traditional whole-rock analysis of B isotopic composition of basaltic glass requires time-consuming pretreatment for removing the altered section. Here, a protocol of in situ B isotopic analysis of basaltic glass by secondary ion mass spectrometry was developed using an accessible reference material BCR-2G which was first ascertaine...
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#1Xun Wei (Ontario Ministry of Natural Resources)
#2Yi-Gang Xu (CAS: Chinese Academy of Sciences)H-Index: 55
Last.Xue-Fa Shi (Ontario Ministry of Natural Resources)
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Abstract Deciphering the contribution of crustal materials to A-type granites is critical to understanding their petrogenesis. Abundant alkaline syenitic and granitic intrusions distributed in Tarim Large Igneous Province, NW China, offer a good opportunity to address relevant issues. This paper presents new zircon Hf-O isotopic data and U-Pb dates on these intrusions, together with whole-rock geochemical compositions, to constrain crustal melting processes associated with a mantle plume. The ~2...
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#1Ming Xiao (CAS: Chinese Academy of Sciences)H-Index: 1
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Abstract Understanding the formation mechanism of the South China Sea has important implications for research on plate rupture and continent-ocean transition globally. Granitoids dredged from the Xiaozhenzhu Rise provide new perspectives on lithosphere evolution processes of this region. Zircon U Pb (127–122 Ma) and amphibole/K-feldspar 40Ar/39Ar (123–115 Ma) ages indicate high cooling rates of 55–64 °C/myr and thus rapid magma emplacement and uplift in the Early Cretaceous. These calc-alkaline ...
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ABSTRACTMesozoic A-type granites are widely distributed in the Lower Yangtze River Belt (LYRB) in China, but their petrogenesis and geodynamic settings are unresolved. Here, we describe geochronolo...
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