中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 海洋研究所
  3. 中国科学院海洋研究所
  4. 深海极端环境与生命过程研究中心
Origin of transitional I-A-type syenite and its relationship to A-type intrusions in the Luzong Basin, the Lower Yangtze River Belt: Insights from geochemistry

文献类型：期刊论文

作者Zhang, Jun-Jie3,5; Sun, Sai-Jun1,5; Zhang, Li-Peng1,5; Deng, Jiang-Hong5; Li, Shuang4; Sun, Wei-Dong2,3,5
刊名CHEMICAL GEOLOGY
出版日期2023-06-05
卷号626页码:16
ISSN号0009-2541
关键词Luzong Basin Syenite A-type granitoid High Nb content Ridge subduction Oxygen fugacity
DOI10.1016/j.chemgeo.2023.121458
通讯作者Sun, Sai-Jun(sunsaijun06@163.com) ; Li, Shuang(lishuang@glut.edu.cn)
英文摘要There are potential genetic relationships between I- and A-type granitoids, which remain obscure. The origin of transitional I-A-type intrusions could provide new clues for this issue and are important in deciphering the origin of A-type intrusions. Here we report geochemical and isotopic compositions of transitional I-A-type syenites (Makou pluton) from the Luzong Basin in the Lower Yangtze River Belt (LYRB). The Makou pluton is composed of gabbros and syenites. Zircon U-Pb ages reveal that it was formed at similar to 130 Ma, which was slightly earlier than typical A-type intrusions in the LYRB. Geochemical features indicate that the Makou syenites belong to transitional I-A-type igneous rocks. The Sr-Nd-O isotopic compositions and the correlation between major and trace elements of Makou gabbros and syenites suggest that they are cogenetic, whereas the syenites experienced further magma evolution. Geochemical characteristics, especially the high Nb content of gabbros, suggest that the mantle source of the Makou pluton was metasomatized by melts from subducted sediments and slabs, which is similar to Huangmeijian A-type intrusion in the Luzong Basin. Makou syenites have different evolution conditions, e.g., the temperature and oxygen fugacity, compared with the Huangmeijian A-type intrusion. The ferroan character of the Makou syenites was weakened by crystal fractionation at relatively high oxygen conditions to produce the transitional I-A-type intrusions, due to more addition of fluids derived from subducted slabs to the source. This is consistent with the partial melting of the metasomatized lithosphere mantle due to asthenosphere upwelling as a result of ridge subduction beneath the LYRB.
WOS关键词ZIRCON U-PB ; VOLCANIC-BASIN ; EASTERN CHINA ; ISOTOPIC COMPOSITIONS ; METALLOGENIC BELT ; FRACTIONATED GRANITES ; CHEMICAL-COMPOSITION ; CONTINENTAL-CRUST ; RIDGE SUBDUCTION ; OXIDATION-STATE
资助项目National Natural Science Founda- tion of China[41903005] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42020303] ; National Natural Science Foundation of China[41627803]
WOS研究方向Geochemistry & Geophysics
语种英语
出版者ELSEVIER
WOS记录号WOS:000983343900001
源URL[http://ir.qdio.ac.cn/handle/337002/183044]  
专题海洋研究所_深海极端环境与生命过程研究中心
通讯作者Sun, Sai-Jun; Li, Shuang
作者单位1.Laoshan Lab, Lab Marine Geol, Qingdao 266061, Peoples R China
2.Laoshan Lab, Deep Sea Multidisciplinary Res Ctr, Qingdao 266237, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Guilin Univ Technol, Coll Earth Sci, Guangxi Key Lab Hidden Met Ore Deposits Explorat, Guilin 541004, Peoples R China
5.Chinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res, Qingdao 266071, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Jun-Jie,Sun, Sai-Jun,Zhang, Li-Peng,et al. Origin of transitional I-A-type syenite and its relationship to A-type intrusions in the Luzong Basin, the Lower Yangtze River Belt: Insights from geochemistry[J]. CHEMICAL GEOLOGY,2023,626:16.
APA Zhang, Jun-Jie,Sun, Sai-Jun,Zhang, Li-Peng,Deng, Jiang-Hong,Li, Shuang,&Sun, Wei-Dong.(2023).Origin of transitional I-A-type syenite and its relationship to A-type intrusions in the Luzong Basin, the Lower Yangtze River Belt: Insights from geochemistry.CHEMICAL GEOLOGY,626,16.
MLA Zhang, Jun-Jie,et al."Origin of transitional I-A-type syenite and its relationship to A-type intrusions in the Luzong Basin, the Lower Yangtze River Belt: Insights from geochemistry".CHEMICAL GEOLOGY 626(2023):16.

入库方式： OAI收割

来源：海洋研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。