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. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
Geochemistry of Middle Triassic gabbros from northern Liaoning, North China: origin and tectonic implications

文献类型：期刊论文

作者Zhang, Xiaohui1; Zhang, Hongfu1; Zhai, Mingguo1; Wilde, Simon A.2; Xie, Liewen1
刊名GEOLOGICAL MAGAZINE
出版日期2009-07-01
卷号146期号:4页码:540-551
关键词gabbro geochemistry origin post-orogenic magmatism North China
ISSN号0016-7568
DOI10.1017/S0016756808005530
文献子类Article
英文摘要The Xiaofangshen mafic stock is a hornblende gabbroic body emplaced in the Faku dome of northern Liaoning within the continental interior of the North China Mongolian plate. Zircon U-Pb SHRIMP dating yields an emplacement age of 241 +/- 6 Ma. These gabbroic rocks exhibit strong enrichment in large ion lithophile elements (e.g. Th, U) and light REE, slightly negative Eu anomalies, and pronounced depletion in high field strength elements (e.g. Nb, Ta, Zr, Ti). They show a relatively narrow range of isotopic compositions with initial (87)Sr/(86)Sr ratios of 0.7053 to 0.7055, epsilon(Nd)(t) values of +0.40 to +0.68 and zircon epsilon(Hf)(T) values from +5.0 to +7.4. These geochemical features suggest that they might have been derived from partial melting of a subduction-related metasomatized lithospheric mantle source, which is tectonically affiliated to the Xing-Meng orogenic belt. Combined with our previous geochronological dating on the predominantly granitic intrusions from the Faku dome, it is inferred that the northern Liaoning block has a tectonic affinity with the Phanerozoic accretionary orogenic belt. This revelation further leads to the proposition that the Chifeng-Kaiyuan fault likely represents the Mesozoic lithospheric boundary between the North China craton and the Xing-Meng orogenic belt in northern Liaoning. The Xiaofangshen gabbros, together with the Triassic mafic-ultramafic cumulates and granulite xenoliths and the Triassic alkaline intrusions within the continental interior of the newly amalgamated North China-Mongolian Plate, constitute an important post-orogenic to within-plate anorogenic magmatic province, in response to the continued magmatic underplating caused by lithospheric delamination and hot asthenosphere upwelling.
WOS关键词ASIAN OROGENIC BELT ; SINO-KOREAN CRATON ; LITHOSPHERIC MANTLE ; INNER-MONGOLIA ; AR-40/AR-39 GEOCHRONOLOGY ; CONTINENTAL GROWTH ; FAKU TECTONITES ; THRUST BELT ; LOWER CRUST ; NE CHINA
WOS研究方向Geology
语种英语
WOS记录号WOS:000267686600006
出版者CAMBRIDGE UNIV PRESS
资助机构Chinese Academy of Sciences(KZCX2-YW-103) ; Chinese Academy of Sciences(KZCX2-YW-103) ; Chinese Academy of Sciences(KZCX2-YW-103) ; Chinese Academy of Sciences(KZCX2-YW-103) ; Major State Basic Research Program of the People's Republic of China(2006CB403504) ; Major State Basic Research Program of the People's Republic of China(2006CB403504) ; Major State Basic Research Program of the People's Republic of China(2006CB403504) ; Major State Basic Research Program of the People's Republic of China(2006CB403504) ; National Natural Science Foundation of China(40534022 ; National Natural Science Foundation of China(40534022 ; National Natural Science Foundation of China(40534022 ; National Natural Science Foundation of China(40534022 ; 40873026) ; 40873026) ; 40873026) ; 40873026) ; Chinese Academy of Sciences(KZCX2-YW-103) ; Chinese Academy of Sciences(KZCX2-YW-103) ; Chinese Academy of Sciences(KZCX2-YW-103) ; Chinese Academy of Sciences(KZCX2-YW-103) ; Major State Basic Research Program of the People's Republic of China(2006CB403504) ; Major State Basic Research Program of the People's Republic of China(2006CB403504) ; Major State Basic Research Program of the People's Republic of China(2006CB403504) ; Major State Basic Research Program of the People's Republic of China(2006CB403504) ; National Natural Science Foundation of China(40534022 ; National Natural Science Foundation of China(40534022 ; National Natural Science Foundation of China(40534022 ; National Natural Science Foundation of China(40534022 ; 40873026) ; 40873026) ; 40873026) ; 40873026) ; Chinese Academy of Sciences(KZCX2-YW-103) ; Chinese Academy of Sciences(KZCX2-YW-103) ; Chinese Academy of Sciences(KZCX2-YW-103) ; Chinese Academy of Sciences(KZCX2-YW-103) ; Major State Basic Research Program of the People's Republic of China(2006CB403504) ; Major State Basic Research Program of the People's Republic of China(2006CB403504) ; Major State Basic Research Program of the People's Republic of China(2006CB403504) ; Major State Basic Research Program of the People's Republic of China(2006CB403504) ; National Natural Science Foundation of China(40534022 ; National Natural Science Foundation of China(40534022 ; National Natural Science Foundation of China(40534022 ; National Natural Science Foundation of China(40534022 ; 40873026) ; 40873026) ; 40873026) ; 40873026) ; Chinese Academy of Sciences(KZCX2-YW-103) ; Chinese Academy of Sciences(KZCX2-YW-103) ; Chinese Academy of Sciences(KZCX2-YW-103) ; Chinese Academy of Sciences(KZCX2-YW-103) ; Major State Basic Research Program of the People's Republic of China(2006CB403504) ; Major State Basic Research Program of the People's Republic of China(2006CB403504) ; Major State Basic Research Program of the People's Republic of China(2006CB403504) ; Major State Basic Research Program of the People's Republic of China(2006CB403504) ; National Natural Science Foundation of China(40534022 ; National Natural Science Foundation of China(40534022 ; National Natural Science Foundation of China(40534022 ; National Natural Science Foundation of China(40534022 ; 40873026) ; 40873026) ; 40873026) ; 40873026)
源URL[http://ir.iggcas.ac.cn/handle/132A11/71982]  
专题中国科学院地质与地球物理研究所
通讯作者Zhang, Xiaohui
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Curtin Univ Technol, Dept Appl Geol, Perth, WA, Australia
推荐引用方式
GB/T 7714		 Zhang, Xiaohui,Zhang, Hongfu,Zhai, Mingguo,et al. Geochemistry of Middle Triassic gabbros from northern Liaoning, North China: origin and tectonic implications[J]. GEOLOGICAL MAGAZINE,2009,146(4):540-551.
APA Zhang, Xiaohui,Zhang, Hongfu,Zhai, Mingguo,Wilde, Simon A.,&Xie, Liewen.(2009).Geochemistry of Middle Triassic gabbros from northern Liaoning, North China: origin and tectonic implications.GEOLOGICAL MAGAZINE,146(4),540-551.
MLA Zhang, Xiaohui,et al."Geochemistry of Middle Triassic gabbros from northern Liaoning, North China: origin and tectonic implications".GEOLOGICAL MAGAZINE 146.4(2009):540-551.

入库方式： OAI收割

来源：地质与地球物理研究所

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。