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
  4. 岩石圈演化国家重点实验室
The construction mechanism of the Neoproterozoic S-type Sanfang-Yuanbaoshan granitic plutons in the Jiangnan Orogenic Belt, South China: Insights from geological observation, geochronology, AMS and Bouguer gravity modeling

文献类型：期刊论文

作者Yan, Chaolei1,5,6; Shu, Liangshu5; Chen, Yan6; Faure, Michel6; Feng, Zuohai2,3; Zhai, Mingguo1,4
刊名PRECAMBRIAN RESEARCH
出版日期2021-03-01
卷号354页码:20
关键词South China Jiangnan Orogenic Belt Neoproterozoic S-type granite Anisotropy of magnetic susceptibility Bouguer gravity modeling
ISSN号0301-9268
DOI10.1016/j.precamres.2020.106054
英文摘要The Neoproterozoic S-type granitic plutons, distributed along the suture zone of the Yangtze and Cathaysia blocks, play an important role in the tectonic evolution of the Jiangnan Orogeny. However, few studies had focused on the scientific issues on the physical construction process of these plutons, therefore, we carried out multidisciplinary approaches on the Sanfang and Yuanbaoshan plutons in the western Jiangan Orogenic Belt to figure out the construction mechanism of these plutons. Zircon Hf and U-Pb dating indicates that the magma, originated from the crustal partial melting, was crystallized at ca. 830 Ma. Field investigation shows that the plutons are dome shaped, and the inclinations of bedding/foliation of the country rocks, the Sibao group, gradually decreases away from the contact zone with pluton boundaries. A top-to-the-E kinematic sense was observed in the eastern margin of the Yuanbaoshan pluton. Both the textural analysis and AMS measurement reveal primary magmatic and secondary general top-to-the-W/NW post-solidus fabrics. The Bouguer gravity modeling reveals that the feeder zone probably locates in the southern part of each pluton and these two plutons are connected at depth. According to the primary magmatic fabric patterns, deep geometric shape as well as structural features of the country rocks, we propose that crustal partial melting magma probably initially intruded into the pre-existing mechanically weak (fold/fault) zone of the Sibao group, and meanwhile laterally and upward accreted to progressively construct the dome-shape plutons. The intrusion of ca. 850-820 Ma S-type granites in the Jiangnan region possibly marked the latest stage of the Jiangnan Orogeny. However, the timing and mechanism of the post-solidus deformation are not well constrained, the proposed interpretations remain hypothetical yet.
资助项目National Key R&D Program of China[2016YFC0600202] ; National Natural Science Foundation of China[41772204] ; National Natural Science Foundation of China[42002226] ; Major Program of National Natural Science Foundation of China[41890834] ; Natural Science Foundation of Guangxi[2019GXNSFDA245009] ; French LABEX VOLTAIRE[ANR-10-LABX-100-01] ; EQUIPEX PLANET[ANR-11-EQPX-0036] ; China Scholarship Council
WOS研究方向Geology
语种英语
WOS记录号WOS:000615712000017
出版者ELSEVIER
资助机构National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Major Program of National Natural Science Foundation of China ; Major Program of National Natural Science Foundation of China ; Natural Science Foundation of Guangxi ; Natural Science Foundation of Guangxi ; French LABEX VOLTAIRE ; French LABEX VOLTAIRE ; EQUIPEX PLANET ; EQUIPEX PLANET ; China Scholarship Council ; China Scholarship Council ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Major Program of National Natural Science Foundation of China ; Major Program of National Natural Science Foundation of China ; Natural Science Foundation of Guangxi ; Natural Science Foundation of Guangxi ; French LABEX VOLTAIRE ; French LABEX VOLTAIRE ; EQUIPEX PLANET ; EQUIPEX PLANET ; China Scholarship Council ; China Scholarship Council ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Major Program of National Natural Science Foundation of China ; Major Program of National Natural Science Foundation of China ; Natural Science Foundation of Guangxi ; Natural Science Foundation of Guangxi ; French LABEX VOLTAIRE ; French LABEX VOLTAIRE ; EQUIPEX PLANET ; EQUIPEX PLANET ; China Scholarship Council ; China Scholarship Council ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Major Program of National Natural Science Foundation of China ; Major Program of National Natural Science Foundation of China ; Natural Science Foundation of Guangxi ; Natural Science Foundation of Guangxi ; French LABEX VOLTAIRE ; French LABEX VOLTAIRE ; EQUIPEX PLANET ; EQUIPEX PLANET ; China Scholarship Council ; China Scholarship Council
源URL[http://ir.iggcas.ac.cn/handle/132A11/100144]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Shu, Liangshu
作者单位1.Univ Chinese Acad Sci, Key Lab Computat Geodynam, Beijing 100049, Peoples R China
2.Guilin Univ Technol, Coll Earth Sci, Guilin 541004, Guangxi, Peoples R China
3.Guilin Univ Technol, Guangxi Key Lab Hidden Metall Ore Deposits Explor, Guilin 541004, Guangxi, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
5.Nanjing Univ, State Key Lab Mineral Deposits Res, Nanjing 210023, Jiangsu, Peoples R China
6.Univ Orleans, ISTO, BRGM, CNRS,UMR 7327, F-45071 Orleans, France
推荐引用方式
GB/T 7714		 Yan, Chaolei,Shu, Liangshu,Chen, Yan,et al. The construction mechanism of the Neoproterozoic S-type Sanfang-Yuanbaoshan granitic plutons in the Jiangnan Orogenic Belt, South China: Insights from geological observation, geochronology, AMS and Bouguer gravity modeling[J]. PRECAMBRIAN RESEARCH,2021,354:20.
APA Yan, Chaolei,Shu, Liangshu,Chen, Yan,Faure, Michel,Feng, Zuohai,&Zhai, Mingguo.(2021).The construction mechanism of the Neoproterozoic S-type Sanfang-Yuanbaoshan granitic plutons in the Jiangnan Orogenic Belt, South China: Insights from geological observation, geochronology, AMS and Bouguer gravity modeling.PRECAMBRIAN RESEARCH,354,20.
MLA Yan, Chaolei,et al."The construction mechanism of the Neoproterozoic S-type Sanfang-Yuanbaoshan granitic plutons in the Jiangnan Orogenic Belt, South China: Insights from geological observation, geochronology, AMS and Bouguer gravity modeling".PRECAMBRIAN RESEARCH 354(2021):20.

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。