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North-directed Triassic nappes in Northeastern Vietnam (East Bac Bo)

文献类型：期刊论文

作者Lepvrier, Claude1; Faure, Michel2; Vuong Nguyen Van3; Tich Van Vu3; Lin, Wei4; Thang Ta Trong3; Phuong Ta Hoa3
刊名JOURNAL OF ASIAN EARTH SCIENCES
出版日期2011-04-30
卷号41期号:1页码:56-68
关键词Northeastern Vietnam South China block Triassic tectonics Ophiolitic melange zone Ductile shearing Decollement
ISSN号1367-9120
DOI10.1016/j.jseaes.2011.01.002
文献子类Article
英文摘要A careful re-examination of the previous tectonic descriptions and the acquisition of new structural and kinematic data have been undertaken in Northeastern Vietnam. The structure of the area consists of a system of slightly metamorphosed but ductilely deformed nappes, including recumbent folds, formed during the Triassic, prior to the unconformable deposition of the Upper Triassic terrigenous sediments. These results confirm the previous interpretation of "preyunnanaises nappes", represented by Middle-Upper Paleozoic foliated limestone resting through a flat mylonitic contact over an intermediate "Song Mien unit" (Deprat, 1915), the latter made essentially of deformed Lower Triassic sedimentary and volcanic formations, which previously filled the Song Hien rift (Bourret, 1922a,b). In the external part of the belt, the Triassic strata conformably overlie slightly deformed and unmetamorphosed Upper Paleozoic rocks, forming an autochthonous domain. Alternatively, the same Triassic succession can be seen resting tectonically through decollement zones, directly over the Middle Paleozoic marbles, to form a distinct but subsidiary allochthonous unit. Our data show that the Song Chay orthogneiss and its Lower Paleozoic sedimentary country rocks belong to the main nappe. They also demonstrate that this nappe was transported to the N-NE. A newly discovered ophiolitic melange of supposed oceanic nature and Triassic age, lying along the Song Chay Fault, North of the Nui Con Voi, could hypothetically represent the rooted zone of the nappe. A Tertiary overprinting event, in particular accommodated by strike-slip movements, likely accounts for the present orocline of NE Vietnam. (C) 2011 Elsevier Ltd. All rights reserved.
WOS关键词INDOSINIAN OROGENY ; SE ASIA ; CHINA ; TECTONICS ; CONSTRAINTS ; YUNNAN ; BELT ; ZONE ; AGES ; DOME
WOS研究方向Geology
语种英语
WOS记录号WOS:000289542200004
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构Institut des Sciences de la Terre de Paris (ISTeP) ; Institut des Sciences de la Terre de Paris (ISTeP) ; AUF ("Action Universitaire pour la Francophonie, bureau Asie Pacifique de Hanoi") ; AUF ("Action Universitaire pour la Francophonie, bureau Asie Pacifique de Hanoi") ; National Foundation for Sciences and Technology Development of Vietnam(105.01 ; National Foundation for Sciences and Technology Development of Vietnam(105.01 ; 105.01.53.09 ; 105.01.53.09 ; 105.06.60.09) ; 105.06.60.09) ; Institut des Sciences de la Terre de Paris (ISTeP) ; Institut des Sciences de la Terre de Paris (ISTeP) ; AUF ("Action Universitaire pour la Francophonie, bureau Asie Pacifique de Hanoi") ; AUF ("Action Universitaire pour la Francophonie, bureau Asie Pacifique de Hanoi") ; National Foundation for Sciences and Technology Development of Vietnam(105.01 ; National Foundation for Sciences and Technology Development of Vietnam(105.01 ; 105.01.53.09 ; 105.01.53.09 ; 105.06.60.09) ; 105.06.60.09) ; Institut des Sciences de la Terre de Paris (ISTeP) ; Institut des Sciences de la Terre de Paris (ISTeP) ; AUF ("Action Universitaire pour la Francophonie, bureau Asie Pacifique de Hanoi") ; AUF ("Action Universitaire pour la Francophonie, bureau Asie Pacifique de Hanoi") ; National Foundation for Sciences and Technology Development of Vietnam(105.01 ; National Foundation for Sciences and Technology Development of Vietnam(105.01 ; 105.01.53.09 ; 105.01.53.09 ; 105.06.60.09) ; 105.06.60.09) ; Institut des Sciences de la Terre de Paris (ISTeP) ; Institut des Sciences de la Terre de Paris (ISTeP) ; AUF ("Action Universitaire pour la Francophonie, bureau Asie Pacifique de Hanoi") ; AUF ("Action Universitaire pour la Francophonie, bureau Asie Pacifique de Hanoi") ; National Foundation for Sciences and Technology Development of Vietnam(105.01 ; National Foundation for Sciences and Technology Development of Vietnam(105.01 ; 105.01.53.09 ; 105.01.53.09 ; 105.06.60.09) ; 105.06.60.09)
源URL[http://ir.iggcas.ac.cn/handle/132A11/74684]  
专题中国科学院地质与地球物理研究所
通讯作者Lepvrier, Claude
作者单位1.Univ Paris 06, CNRS, ISTeP, UMR 7193, F-75252 Paris 05, France
2.Univ Orleans, CNRS, ISTO, UMR 6113, F-45067 Orleans 2, France
3.Hanoi Univ Sci, Fac Geol, Hanoi, Vietnam
4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Lepvrier, Claude,Faure, Michel,Vuong Nguyen Van,et al. North-directed Triassic nappes in Northeastern Vietnam (East Bac Bo)[J]. JOURNAL OF ASIAN EARTH SCIENCES,2011,41(1):56-68.
APA Lepvrier, Claude.,Faure, Michel.,Vuong Nguyen Van.,Tich Van Vu.,Lin, Wei.,...&Phuong Ta Hoa.(2011).North-directed Triassic nappes in Northeastern Vietnam (East Bac Bo).JOURNAL OF ASIAN EARTH SCIENCES,41(1),56-68.
MLA Lepvrier, Claude,et al."North-directed Triassic nappes in Northeastern Vietnam (East Bac Bo)".JOURNAL OF ASIAN EARTH SCIENCES 41.1(2011):56-68.

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来源：地质与地球物理研究所

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