典型文献
Yangshan A-Type Granites in the Lower Yangtze River Belt Formed by Ridge Subduction:Radiogenic Ca and Nd Isotopic Constraints
文献摘要：
The Early Cretaceous aluminous A-type granites in the Lower Yangtze River belt(LYRB)can provide important insights into the Mesozoic magmatism in eastern China,but their origin remains highly controversial.In this study,radiogenic Ca-Nd isotopic analysis was performed for sy-enite porphyry and alkali-feldspar granite porphyry of the Yangshan pluton,a typical aluminous A-type granitic intrusion in the LYRB,to constrain its source and geodynamic setting.The results show that εCa(126 Ma),εNd(126 Ma)and K/Casource of the syenite porphyry range from-0.24 to+0.96,-7.2 to-6.0,and 0.31 to 1.26,respectively.The corresponding values for the alkali-feldspar granite porphyry range from 0.26 to 0.84,-8.0 to-6.1,and 0.79 to 1.08,respectively.Binary mixing modeling indicates that they were originated from the same sources with different proportion,namely,a mixing of 50％to 75％Neoproterozoic crust and 50％to 25％asthenospheric mantle.Together with previous works,we propose that the Early Cretaceous subduction of the ridge between the Pacific and Izanagi plates was responsible for the formation of the aluminous A-type granites in the LYRB.
文献关键词：
中图分类号：
作者姓名：
Jianghao Bai;Mingxing Ling;Xiaoyong Yang;Fang Liu;Huangling Gu;Zebin Luo;Xiaoyan Jiang;Zhaofeng Zhang
作者机构：
State Key Laboratoty of Isotope Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China;CAS Center for Excellence in Deep Earth Science,Guangzhou 510640,China;University of Chinese Academy of Sciences,Beijing 100049,China;State Key Laboratory of Nuclear Resources and Environment,East China University of Technology,Nanchang 330013,China;Key Laboratory of Crust-Mantle Materials and Environments,School of Earth and Space Sciences,University of Science and Technology of China,Hefei 230026,China;International Research Center for Planetary Science,College of Earth Sciences,Chengdu University of Technology,Chengdu 610059,China;School of City and Environment,Hunan University of Technology,Zhuzhou 412007,China;State Key Laboratory of Ore Deposit Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550081,China
文献出处：
引用格式：
[1]Jianghao Bai;Mingxing Ling;Xiaoyong Yang;Fang Liu;Huangling Gu;Zebin Luo;Xiaoyan Jiang;Zhaofeng Zhang-.Yangshan A-Type Granites in the Lower Yangtze River Belt Formed by Ridge Subduction:Radiogenic Ca and Nd Isotopic Constraints)[J].地球科学学刊（英文版）,2022(03):581-590
A类：
Yangshan,Radiogenic,aluminous,LYRB,radiogenic,enite,Casource,Izanagi
B类：
Type,Granites,Lower,Yangtze,River,Belt,Formed,by,Ridge,Subduction,Nd,Isotopic,Constraints,Early,Cretaceous,type,granites,belt,can,provide,important,insights,into,Mesozoic,magmatism,eastern,China,but,their,remains,highly,controversial,In,this,study,isotopic,analysis,was,performed,porphyry,alkali,feldspar,pluton,typical,granitic,intrusion,constrain,its,geodynamic,setting,results,show,that,Ma,syenite,range,from,to+0,respectively,corresponding,values,Binary,mixing,modeling,indicates,they,were,originated,same,sources,different,proportion,namely,Neoproterozoic,crust,asthenospheric,mantle,Together,previous,works,propose,subduction,ridge,between,Pacific,plates,responsible,formation
AB值：
0.542651
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