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The Neogene Xiyu Formation, a diachronous prograding gravel wedge at front of the Tianshan: Climatic and tectonic implications

文献类型：期刊论文

作者Charreau, Julien1,2; Gumiaux, Charles3; Avouac, Jean-Philippe2; Augier, Romain3; Chen, Yan3; Barrier, Laurie4; Gilder, Stuart5; Dominguez, Stephane6; Charles, Nicolas3; Wang, Qingchen7
刊名EARTH AND PLANETARY SCIENCE LETTERS
出版日期2009-10-15
卷号287期号:3-4页码:298-310
关键词Xiyu Formation magnetostratigraphy Tianshan gravel wedge progradation shortening rates
ISSN号0012-821X
DOI10.1016/j.epsl.2009.07.035
文献子类Article
英文摘要The Tarim and Junggar basins in central Asia are capped by a thick pile of conglomerates, called the Xiyu Formation, that are commonly linked to a change in climate and/or accelerated uplift near the Plio-Pleistocene boundary. In order to better understand their origin and significance, we carried out a combined structural and magnetostratigraphic study in the Quilitage syncline (southern Tianshan), where the base of the Xiyu conglomerates is observed at both sides of the syncline. A balanced cross-section shows that, even at a local-scale, the base of the Xiyu conglomerates cannot be regarded as a single continuous stratigraphic layer. On the southern flank of the Quilitage syncline, we collected 172 samples collected for magnetostratigraphic dating identify 17 polarity chrons that date the new section from 5.2 to similar to 1.7 Ma and constrain the base of the Xiyu conglomerate here at similar to 1.7 Ma. This is 4.2 Ma younger than the age of the Xiyu previously found on the northern limb of the same syncline. Together with other magnetostratigraphic studies carried out around the Tianshan, our study unambiguously demonstrates that the onset of deposition of the Xiyu conglomerates is diachronous, and that the conglomerates are systematically younger toward the basin. Consequently, the Xiyu Formation should not be considered as a chronostratigraphic marker related to any particular tectonic or climatic event, but is instead a prograding gravel wedge that has prograded over the underthrusting forelands. A synthesis of chronologic and structural results yields progradation rates over the last 10 Ma on the order of similar to 2.0 mm/yr and similar to 3.9 mm/yr south and north of the Tianshan Mountains respectively. These rates are comparable to the shortening rate across the Tianshan range, suggesting that underthrusting is the main factor governing the progradation rate of the Xiyu Formation. (C) 2009 Elsevier B.V. All rights reserved.
WOS关键词INDIA-ASIA COLLISION ; LATE CENOZOIC UPLIFT ; CHINESE TIEN-SHAN ; TARIM BASIN ; COMPRESSIONAL OROGENS ; KUCHE DEPRESSION ; EROSION RATES ; WESTERN CHINA ; EVOLUTION ; DEFORMATION
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000272010800002
出版者ELSEVIER SCIENCE BV
资助机构French ECLIPSE ; French ECLIPSE ; Chinese project(kzcx3-sw-147 ; Chinese project(kzcx3-sw-147 ; PRA(T05-02/T06-04) ; PRA(T05-02/T06-04) ; French ANR(ANR-05-BLAN-0143-01) ; French ANR(ANR-05-BLAN-0143-01) ; Gordon Betty Moore Foundation ; Gordon Betty Moore Foundation ; 973 No 2005CB422101) ; 973 No 2005CB422101) ; French ECLIPSE ; French ECLIPSE ; Chinese project(kzcx3-sw-147 ; Chinese project(kzcx3-sw-147 ; PRA(T05-02/T06-04) ; PRA(T05-02/T06-04) ; French ANR(ANR-05-BLAN-0143-01) ; French ANR(ANR-05-BLAN-0143-01) ; Gordon Betty Moore Foundation ; Gordon Betty Moore Foundation ; 973 No 2005CB422101) ; 973 No 2005CB422101) ; French ECLIPSE ; French ECLIPSE ; Chinese project(kzcx3-sw-147 ; Chinese project(kzcx3-sw-147 ; PRA(T05-02/T06-04) ; PRA(T05-02/T06-04) ; French ANR(ANR-05-BLAN-0143-01) ; French ANR(ANR-05-BLAN-0143-01) ; Gordon Betty Moore Foundation ; Gordon Betty Moore Foundation ; 973 No 2005CB422101) ; 973 No 2005CB422101) ; French ECLIPSE ; French ECLIPSE ; Chinese project(kzcx3-sw-147 ; Chinese project(kzcx3-sw-147 ; PRA(T05-02/T06-04) ; PRA(T05-02/T06-04) ; French ANR(ANR-05-BLAN-0143-01) ; French ANR(ANR-05-BLAN-0143-01) ; Gordon Betty Moore Foundation ; Gordon Betty Moore Foundation ; 973 No 2005CB422101) ; 973 No 2005CB422101)
源URL[http://ir.iggcas.ac.cn/handle/132A11/71264]  
专题中国科学院地质与地球物理研究所
通讯作者Charreau, Julien
作者单位1.Ctr Rech Petrog & Geochim, F-54501 Vandoeuvre Les Nancy, France
2.CALTECH, Tecton Observ, Pasadena, CA 91125 USA
3.Univ Orleans, CNRS, INSU, Univ Tours,Inst Sci Terre Orleans,UMR 6113, F-45071 Orleans, France
4.Inst Phys Globe, F-75252 Paris 05, France
5.Univ Munich, Dept Earth & Environm Sci, Geophys Sect, D-80333 Munich, Germany
6.Univ Montpellier 2, CNRS, UMR 5573, Lab Dynam Lithosphere, F-34095 Montpellier, France
7.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Charreau, Julien,Gumiaux, Charles,Avouac, Jean-Philippe,et al. The Neogene Xiyu Formation, a diachronous prograding gravel wedge at front of the Tianshan: Climatic and tectonic implications[J]. EARTH AND PLANETARY SCIENCE LETTERS,2009,287(3-4):298-310.
APA Charreau, Julien.,Gumiaux, Charles.,Avouac, Jean-Philippe.,Augier, Romain.,Chen, Yan.,...&Wang, Qingchen.(2009).The Neogene Xiyu Formation, a diachronous prograding gravel wedge at front of the Tianshan: Climatic and tectonic implications.EARTH AND PLANETARY SCIENCE LETTERS,287(3-4),298-310.
MLA Charreau, Julien,et al."The Neogene Xiyu Formation, a diachronous prograding gravel wedge at front of the Tianshan: Climatic and tectonic implications".EARTH AND PLANETARY SCIENCE LETTERS 287.3-4(2009):298-310.

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