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Seismic evidence for significant lateral variations in lithospheric thickness beneath the central and western North China Craton

文献类型：期刊论文

作者Chen, Ling; Cheng, Cheng; Wei, Zigen
刊名EARTH AND PLANETARY SCIENCE LETTERS
出版日期2009-08-30
卷号286期号:1-2页码:171-183
关键词North China Craton lithospheric thickness S-receiver functions lithospheric thinning
ISSN号0012-821X
DOI10.1016/j.epsl.2009.06.022
文献子类Article
英文摘要We have migrated teleseismic S-receiver functions to construct detailed lithospheric structure images that cover the three constituent parts of the North China Craton (NCC). Our images show that in contrast to the eastern NCC where significantly thinned lithosphere (60-100 km) is widespread, the central and western NCC are characterized by the coexistence of both preserved thick and dramatically thinned lithosphere. The thick lithosphere (>200 km) is present beneath the stable Ordos Plateau and the thinned lithosphere (up to 80 km) is found in the late Cenozoic Yinchuan-Hetao and Shaanxi-Shanxi rift areas, with sharp changes occurring over a lateral distance of <200-400 km. Near the boundary between the eastern and central NCC, a rapid thickening of the lithosphere by 20-40 km over similar to 100 km laterally is observed, concordant with abrupt changes in surface topography and roughly coincident with the North-South Gravity Lineament (NSCL). Together with petrological and geochemical data these structural features suggest that lithospheric remobilization and thinning may have affected the NCC much further to the west than previously thought. Compared to the widespread reactivation and destruction of lithospheric mantle in the eastern NCC, lithospheric modification of the central and western NCC may have been less intensive and spatially more localized. Rifting and lithospheric reactivation probably occurred at mechanically weak boundary zones, but the cratonic nucleus of the Ordos block (which forms the western part of NCC) seems to have retained its rigidity, thickness, and stability over long periods of geological time. The long-term survival of such lateral contrasts suggests that the thick lithosphere is compositionally distinct from the convecting upper mantle. (C) 2009 Elsevier B.V. All rights reserved.
WOS关键词SINO-KOREAN CRATON ; SURFACE-WAVE TOMOGRAPHY ; S-RECEIVER FUNCTIONS ; UPPER-MANTLE BENEATH ; EASTERN CHINA ; SOUTH CHINA ; TECTONIC EVOLUTION ; ASTHENOSPHERE BOUNDARY ; CONTINENTAL-CRUST ; TORNQUIST ZONE
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000270647500017
出版者ELSEVIER SCIENCE BV
资助机构National Science Foundation of China(90814002 ; National Science Foundation of China(90814002 ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; 40674029) ; 40674029) ; National Science Foundation of China(90814002 ; National Science Foundation of China(90814002 ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; 40674029) ; 40674029) ; National Science Foundation of China(90814002 ; National Science Foundation of China(90814002 ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; 40674029) ; 40674029) ; National Science Foundation of China(90814002 ; National Science Foundation of China(90814002 ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; 40674029) ; 40674029)
源URL[http://ir.iggcas.ac.cn/handle/132A11/71604]  
专题中国科学院地质与地球物理研究所
通讯作者Chen, Ling
作者单位Chinese Acad Sci, Inst Geol & Geophys, Seismol Lab, SKL LE, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Chen, Ling,Cheng, Cheng,Wei, Zigen. Seismic evidence for significant lateral variations in lithospheric thickness beneath the central and western North China Craton[J]. EARTH AND PLANETARY SCIENCE LETTERS,2009,286(1-2):171-183.
APA Chen, Ling,Cheng, Cheng,&Wei, Zigen.(2009).Seismic evidence for significant lateral variations in lithospheric thickness beneath the central and western North China Craton.EARTH AND PLANETARY SCIENCE LETTERS,286(1-2),171-183.
MLA Chen, Ling,et al."Seismic evidence for significant lateral variations in lithospheric thickness beneath the central and western North China Craton".EARTH AND PLANETARY SCIENCE LETTERS 286.1-2(2009):171-183.

入库方式： OAI收割

来源：地质与地球物理研究所

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