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
Geochronology and geochemistry of the Paleoproterozoic Fangniushan supracrustal strata in the Xiaoshan area, southern North China Craton: Implications for tectonic evolution

文献类型：期刊论文

作者Sun, Qianying2,3; Zhou, Yanyan1; Zhao, Taiping2; Pang, Lanyin2,4; Qiu, Yifan2,4
刊名PRECAMBRIAN RESEARCH
出版日期2020-08-15
卷号346页码:22
关键词North China craton Fangniushan metasedimentary rocks Detrital zircon Geochemistry Tectonic evolution
ISSN号0301-9268
DOI10.1016/j.precamres.2020.105789
英文摘要The Fangniushan supracrustal strata located in Xiaoshan area is one of the best-preserved Paleoproterozoic lowgrade metasedimentary units exposed in the southern North China Craton, which is mainly composed of quartzite and feldspar quartzite with minor pebbly quartzite and conglomerates. It unconformably contacts with the underlying Taihua Complex and the overlying Paleoproterozoic Xiong'er Group. Ages of the youngest detrital zircons from the quartzites combined with the formation age of the overlying Xiong'er Group bracket the depositional time of the Fangniushan supracrustal strata at ca. 1.87-1.80 Ga. Low CIA ( < 70), ICV (0.48-1.46) values and high SiO2/Al2O3 (4.1-75.1) ratios for the Fangniushan metasedimentary rocks are suggestive of chemically mature source that experienced weak to moderate chemical weathering in their source areas, which is also supported by the A-CN-K signatures. Detrital zircon U-Pb ages of the Fangniushan metasedimentary rocks yield three populations of similar to 2.00 to 2.24 Ga, similar to 2.25 to 2.40 Ga and similar to 2.50 to 2.88 Ga. REE patterns combined with trace elements characteristics involving La, Th, Zr, Hf, Co and Sc reveal that the Fangniushan metasedimentary rocks dominantly received detritus from felsic sources in the Xiaoshan and adjacent Xiaoqinling, Xiong'ershan and Zhongtiaoshan areas. Taking all these geochronological and geochemical signatures into account, the Fangniushan supracrustal strata was most likely deposited in a retro-arc foreland setting. In combination with previous studies on other Paleoproterozoic metavolcanic-sedimentary sequences, we prefer that the southern NCC might have experienced tectonic regime change from rift to subduction during Paleoproterozoic.
WOS关键词ZIRCON U-PB ; HF ISOTOPIC COMPOSITIONS ; LIAO-JI BELT ; TAIHUA COMPLEX ; CRUSTAL EVOLUTION ; SEDIMENTARY-ROCKS ; LU-HF ; SUSHUI COMPLEX ; TTG GNEISSES ; CONTINENTAL EVOLUTION
资助项目National Natural Science Foundation of China[41802203] ; National Natural Science Foundation of China[41573041]
WOS研究方向Geology
语种英语
WOS记录号WOS:000561242000015
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/97665]  
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Zhao, Taiping
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangzhou 510640, Peoples R China
3.Guangdong Acad Sci, Natl Reg Joint Engn Res Ctr Soil Pollut Control &, Guangdong Inst Ecoenvironm Sci & Technol, Guangdong Key Lab Integrated Agroenvironm Pollut, Guangzhou 510650, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Sun, Qianying,Zhou, Yanyan,Zhao, Taiping,et al. Geochronology and geochemistry of the Paleoproterozoic Fangniushan supracrustal strata in the Xiaoshan area, southern North China Craton: Implications for tectonic evolution[J]. PRECAMBRIAN RESEARCH,2020,346:22.
APA Sun, Qianying,Zhou, Yanyan,Zhao, Taiping,Pang, Lanyin,&Qiu, Yifan.(2020).Geochronology and geochemistry of the Paleoproterozoic Fangniushan supracrustal strata in the Xiaoshan area, southern North China Craton: Implications for tectonic evolution.PRECAMBRIAN RESEARCH,346,22.
MLA Sun, Qianying,et al."Geochronology and geochemistry of the Paleoproterozoic Fangniushan supracrustal strata in the Xiaoshan area, southern North China Craton: Implications for tectonic evolution".PRECAMBRIAN RESEARCH 346(2020):22.

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。