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Late Mesozoic compressional to extensional tectonics in the Yiwulushan massif, NE China and their bearing on the Yinshan-Yanshan orogenic belt Part II: Anisotropy of magnetic susceptibility and gravity modeling

文献类型：期刊论文

作者Lin, Wei1; Charles, Nicolas2; Chen, Yan2; Chen, Ke1; Faure, Michel2; Wu, Lin1; Wang, Fei1; Li, Qiuli1; Wang, Jun1; Wang, Qingchen1
刊名GONDWANA RESEARCH
出版日期2013
卷号23期号:1页码:78-94
关键词North China Craton Yinshan-yanshan Fold And Thrust Belt Yiwulushan Massif Anisotropy Of Magnetic Susceptibility Gravity Modeling Late Mesozoic Tectonic Evolution
ISSN号1342-937X
DOI10.1016/j.gr.2012.02.012
文献子类Article
英文摘要Granitoids play an important role in deciphering both crustal growth and tectonic evolution of Earth. In the eastern end of the Yinshan-Yanshan belt of North China Craton, the Yiwulushan massif is a typical region that presents the tectonic evolution features of this belt. Our field work on the host rocks has demonstrated two phases of opposite tectonics: compressional and extensional, however, the deformation is almost invisible in the intrusive rocks. To improve the understanding of the tectonic evolution of the Yiwulushan massif and the Late Mesozoic tectonics of East Asia, a multidisciplinary study has been carried out. In this study, anisotropy of magnetic susceptibility (AMS) and gravity modeling have been applied on these Jurassic plutons (Lushan, Jishilazi and Guanyindong), which intrude into the Yiwulushan massif. According to laboratory measurements and microscopic observations on thin sections, the AMS of the Yiwulushan massif is characterized by secondary fabrics, indicating that the intensive post solidus deformation has reset the (primary) magmatic magnetic fabrics. A relatively gentle NW dipping magnetic foliation has been identified with two distinct groups of magnetic lineations of N34 degrees E and N335 degrees E orientations, namely L-M1 and L-M2, relatively. Gravity modeling reveals a southward thinning of the massif with a possible feeding zone rooted in the northern part of the massif. Integrating all results from structural observation, geochronological investigation, AMS measurement and gravity modeling, two tectonic phases have been identified in the Yiwulushan massif, posterior to the Jurassic (180-160 Ma) magmatism in the Yinshan-Yanshan area. The early one concerns a Late Jurassic-Early Cretaceous (similar to 141 Ma) compressional event with a top-to-the-south to southwest sense of shear. The second one shows an Early Cretaceous (similar to 126 Ma) NW-SE ductile extensional shearing. At that time, sedimentary basins widened and Jurassic plutons started to be deformed under post solidus conditions. In fact, the NW-SE trend of the maximum stretching direction is a general feature of East Asian continent during Late Mesozoic. (c) 2012 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.
WOS关键词METAMORPHIC CORE COMPLEX ; NORTH CHINA ; THRUST BELT ; GEOCHRONOLOGICAL CONSTRAINTS ; LIAONING PROVINCE ; INNER-MONGOLIA ; EVOLUTION ; CRATON ; PENINSULA ; DEFORMATION
WOS研究方向Geology
语种英语
WOS记录号WOS:000312746000006
出版者ELSEVIER SCIENCE BV
资助机构NSFC(90714007 ; NSFC(90714007 ; NSFC(90714007 ; NSFC(90714007 ; 40872142) ; 40872142) ; 40872142) ; 40872142) ; NSFC(90714007 ; NSFC(90714007 ; NSFC(90714007 ; NSFC(90714007 ; 40872142) ; 40872142) ; 40872142) ; 40872142) ; NSFC(90714007 ; NSFC(90714007 ; NSFC(90714007 ; NSFC(90714007 ; 40872142) ; 40872142) ; 40872142) ; 40872142) ; NSFC(90714007 ; NSFC(90714007 ; NSFC(90714007 ; NSFC(90714007 ; 40872142) ; 40872142) ; 40872142) ; 40872142)
源URL[http://ir.iggcas.ac.cn/handle/132A11/86398]  
专题中国科学院地质与地球物理研究所
通讯作者Lin, Wei
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Univ Orleans, ISTO, UMR 7327, F-45071 Orleans, France
推荐引用方式
GB/T 7714		 Lin, Wei,Charles, Nicolas,Chen, Yan,et al. Late Mesozoic compressional to extensional tectonics in the Yiwulushan massif, NE China and their bearing on the Yinshan-Yanshan orogenic belt Part II: Anisotropy of magnetic susceptibility and gravity modeling[J]. GONDWANA RESEARCH,2013,23(1):78-94.
APA Lin, Wei.,Charles, Nicolas.,Chen, Yan.,Chen, Ke.,Faure, Michel.,...&Wang, Qingchen.(2013).Late Mesozoic compressional to extensional tectonics in the Yiwulushan massif, NE China and their bearing on the Yinshan-Yanshan orogenic belt Part II: Anisotropy of magnetic susceptibility and gravity modeling.GONDWANA RESEARCH,23(1),78-94.
MLA Lin, Wei,et al."Late Mesozoic compressional to extensional tectonics in the Yiwulushan massif, NE China and their bearing on the Yinshan-Yanshan orogenic belt Part II: Anisotropy of magnetic susceptibility and gravity modeling".GONDWANA RESEARCH 23.1(2013):78-94.

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来源：地质与地球物理研究所

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