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Late Neogene magnetostratigraphy in the western Qaidam Basin (NE Tibetan Plateau) and its constraints on active tectonic uplift and progressive evolution of growth strata

文献类型：期刊论文

作者Zhang, Weilin1,4; Fang, Xiaomin1; Song, Chunhui2,3; Appel, Erwin4; Yan, Maodu1; Wang, Yadong5
刊名TECTONOPHYSICS
出版日期2013-06-25
卷号599页码:107-116
关键词Magnetostratigraphy Neogene Growth Strata Qaidam Basin Ne Tibetan Plateau
DOI10.1016/j.tecto.2013.04.010
文献子类Article
英文摘要The Qaidam Basin as the largest intermontane basin of the NE Tibetan Plateau is the ideal place to provide constraints on depositional and tectonic patters. To determine its tectonic deformation history and progressive evolution of growth strata we conducted paleomagnetic study on the late-Neogene stratigraphic section in the western Qaidam Basin. A magnetostratigraphic study of the well exposed 805 m Qigequan section at the Qigequan anticline in the western Qaidam Basin reveals twelve pairs of normal and reversed polarity zones which can be readily correlated with chrons C1n-3Ar of the Geomagnetic Polarity Time Scale (GPTS). From this correlation we can conclude that the Shizigou and the Qigequan formations were formed at >6.9 Ma-2.5 Ma and 2.5-0.4 Ma, respectively. Accumulation rates determined from our chronology, together with the occurrence of unconformities suggest four phases of tectonic uplift which began at about 3.6 Ma, 2.5 Ma, 1.1 Ma and 0.8 Ma. The results also suggest that offlap growth strata according to the limb rotation model on the anticlinorium started to occur at similar to 8.2 Ma. They progressively become younger from the frontal region of the Altyn Tagh Mts. (similar to 8.2 Ma) to the southwestern basin (similar to 2.5 Ma) and to further east of the Qaidam Basin (<2.5 Ma), caused by fault-propagation-folding in the Qaidam Basin, rapid uplift and fast exhumation of the NE Tibetan Plateau at those times. (C) 2013 Elsevier B.V. All rights reserved.
WOS关键词ALTYN-TAGH FAULT ; RESOLUTION MAGNETO STRATIGRAPHY ; NORTHERN TIBET ; NW CHINA ; CENOZOIC DEFORMATION ; SECTION RESTORATION ; QINGHAI PROVINCE ; NORTHWEST CHINA ; HEXI CORRIDOR ; CENTRAL-ASIA
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000321231800008
资助机构(973) National Basic Research Program of China(2013CB956400 ; (973) National Basic Research Program of China(2013CB956400 ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB03020400) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB03020400) ; NSFC(41021001 ; NSFC(41021001 ; German Research Foundation within the Priority Programme 1372 "TiP" ; German Research Foundation within the Priority Programme 1372 "TiP" ; 2011CB403000) ; 2011CB403000) ; 40920114001 ; 40920114001 ; 41172032 ; 41172032 ; 40702006) ; 40702006) ; (973) National Basic Research Program of China(2013CB956400 ; (973) National Basic Research Program of China(2013CB956400 ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB03020400) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB03020400) ; NSFC(41021001 ; NSFC(41021001 ; German Research Foundation within the Priority Programme 1372 "TiP" ; German Research Foundation within the Priority Programme 1372 "TiP" ; 2011CB403000) ; 2011CB403000) ; 40920114001 ; 40920114001 ; 41172032 ; 41172032 ; 40702006) ; 40702006)
源URL[http://ir.iggcas.ac.cn/handle/132A11/62664]  
专题地质与地球物理研究所_兰州油气中心
作者单位1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100101, Peoples R China
2.Lanzhou Univ, Key Lab Western Chinas Environm Syst, Minist Educ China, Lanzhou 730000, Gansu, Peoples R China
3.Lanzhou Univ, Coll Resources & Environm, Lanzhou 730000, Gansu, Peoples R China
4.Univ Tubingen, Fachbereich Geowissensch, D-72076 Tubingen, Germany
5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Weilin,Fang, Xiaomin,Song, Chunhui,et al. Late Neogene magnetostratigraphy in the western Qaidam Basin (NE Tibetan Plateau) and its constraints on active tectonic uplift and progressive evolution of growth strata[J]. TECTONOPHYSICS,2013,599:107-116.
APA Zhang, Weilin,Fang, Xiaomin,Song, Chunhui,Appel, Erwin,Yan, Maodu,&Wang, Yadong.(2013).Late Neogene magnetostratigraphy in the western Qaidam Basin (NE Tibetan Plateau) and its constraints on active tectonic uplift and progressive evolution of growth strata.TECTONOPHYSICS,599,107-116.
MLA Zhang, Weilin,et al."Late Neogene magnetostratigraphy in the western Qaidam Basin (NE Tibetan Plateau) and its constraints on active tectonic uplift and progressive evolution of growth strata".TECTONOPHYSICS 599(2013):107-116.

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来源：地质与地球物理研究所

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