中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Geochronological constraint of Early Mesozoic tectonic event at Northeast Vietnam

文献类型:期刊论文

作者Chen ZeChao1,2; Lin Wei1; Faure, Michel3; Lepvrier, Claude4; Chu Yang1; Wang QingChen1
刊名ACTA PETROLOGICA SINICA
出版日期2013-05-01
卷号29期号:5页码:1825-1840
关键词South Margin Of South China Block Song Chay Belt Thrust Early Mesozoic Tectonic Evolution
文献子类Article
英文摘要The northeastern Vietnam, northeastern Guangxi, southwestern Guangdong and Hainan Island with NW-SE trending all locate in south margin of South China Block ( SCB). It is an important region to understanding the tectonic evolution of South China Block. Song Chay belt locates in the northeast region of Vietnam, a NE-SW mineral and stretching lineation, and top-to-the-NE ductile deformation are the main structures and observed both in Early Paleozoic lower metamorphism face strata and Late Paleozoic to Early Mesozoic unmetamorphozed sedimentary rocks. These structural characteristics were coeval with N/NE verging recumbent folds and nappes. Alike for the Song Chay belt, the same Early Mesozoic structural characteristics are also observed in Yunkai terrane, Hainan island and northeast region of Guangxi. All of these deformations occurred in the same tectonic event because of the time and the deformation style are almost the same. To decipher the time of this deformation, we study the structural character of deformed strata and granitic rocks, and analyzed the high quality U-Pb zircon geochronology data, then defined the time of nappes as 237 similar to 228Ma. The geodynamic of the tectonic event can be related to the collision between South China Block and Indochina in the Early Mesozoic time. We argue that South China Block subducted beneath to Day Nui Con Voi micro-continental block along Song Chay suture zone in Early Triassic, the south margin of SCB as the subduction plate were developed top to NE thrust and NE verging nappes. This orogeny is over at Late Triassic. Therefore, the northeastern Vietnam, northeastern Guangxi, southwestern Guangdong and Hainan island are belong to the southern margin of SCB and involved in the Indosinian orogenic belt.
WOS关键词RIVER SHEAR ZONE ; TRUONG SON BELT ; ULTRAHIGH-PRESSURE METAMORPHISM ; U-PB GEOCHRONOLOGY ; LEFT-LATERAL SHEAR ; TAN-LU FAULT ; SOUTH CHINA ; AILAO SHAN ; SOUTHEASTERN CHINA ; INDOSINIAN OROGENY
WOS研究方向Geology
语种英语
WOS记录号WOS:000321226200025
源URL[http://ir.iggcas.ac.cn/handle/132A11/62635]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Univ Orleans, Inst Sci Terre Orleans, F-45071 Orleans, France
4.Univ Paris 06, CNRS UMR7072, F-75252 Paris 05, France
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Chen ZeChao,Lin Wei,Faure, Michel,et al. Geochronological constraint of Early Mesozoic tectonic event at Northeast Vietnam[J]. ACTA PETROLOGICA SINICA,2013,29(5):1825-1840.
APA Chen ZeChao,Lin Wei,Faure, Michel,Lepvrier, Claude,Chu Yang,&Wang QingChen.(2013).Geochronological constraint of Early Mesozoic tectonic event at Northeast Vietnam.ACTA PETROLOGICA SINICA,29(5),1825-1840.
MLA Chen ZeChao,et al."Geochronological constraint of Early Mesozoic tectonic event at Northeast Vietnam".ACTA PETROLOGICA SINICA 29.5(2013):1825-1840.

入库方式: OAI收割

来源:地质与地球物理研究所

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