Flyover Crustal Structures Beneath the Qinling Orogenic Belt and Its Tectonic Implications

doi:10.1029/2017JB015401

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 岩石圈演化国家重点实验室

	Flyover Crustal Structures Beneath the Qinling Orogenic Belt and Its Tectonic Implications
	Song, Penghan 1,2; Teng, Jiwen 1; Zhang, Xuemei 3; Liu, Youshan 1; Si, Xiang 4; Ma, Xueying 1; Qiao, Yonghu 5; Dong, Xingpeng 6
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
	2018-08-01
卷号	123 期号:8 页码:6703-6718
关键词	Qingling Orogenic Belt Tibetan Plateau Dabashan Orocline Weihe Basin crustal structure
ISSN号	2169-9313
DOI	10.1029/2017JB015401
英文摘要	Determining high-resolution three-dimensional (3-D) crustal structures of the Qinling Orogenic Belt (QOB) can reveal significant evidences to enhance our understanding of its tectonic evolution. By jointly inverting group and phase velocity dispersion curves, we obtain a high-resolution 3-D shear wave velocity model for the QOB. According to the obviously layered features, which include an E-W trending high-velocity structure in the upper crust (0-10 km), a transitional zone in the middle crust (10-30 km), and an approximately N-S trending low-velocity zone in the middle-lower crust (20-40 km), we elucidate the crustal structure as a flyover model to explain how the crust beneath the QOB was deformed under the perpendicular force systems from the NE-SW and E-W directions during the Meso-Cenozoic. First, the apparent NE-SW trending low-velocity zone in the middle-lower crust indicates that the low-viscosity crustal materials beneath the northeastern Tibetan Plateau did not flow eastward into the eastern Qinling terrane during the Cenozoic. Second, the extension in the northern Qinling Mountains and Weihe Basin was not largely affected by the lateral crustal growth of the NE Tibetan Plateau, which might be the result of deep mantle upwelling and/or residual effects from the subduction of the western Pacific plate. Third, during the Mesozoic, the high-velocity structures beneath the Hannan-Micang and Shennongjia-Huangling domes served as anchors resisting the northward subduction, rotation, and continuous collision of the Yangtze Block. The eastward extruding Hannan-Micang dome served as an indenter that eventually shaped the present-day asymmetric style of the Dabashan Orocline during the Cenozoic.
资助项目	National Natural Science Foundation of China[41674102]
WOS关键词	AMBIENT NOISE TOMOGRAPHY ; NE TIBETAN PLATEAU ; SURFACE-WAVE DISPERSION ; NORTH CHINA CRATON ; UPPER-MANTLE STRUCTURE ; LOW-VELOCITY ZONE ; RECEIVER FUNCTIONS ; JOINT INVERSION ; WEIHE GRABEN ; SICHUAN BASIN
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000446170700034
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/89177]
专题	地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者	Song, Penghan
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China 3.China Earthquake Networks Ctr, Beijing, Peoples R China 4.Minist Land & Resources, Strateg Res Ctr Oil & Gas Resources, Beijing, Peoples R China 5.Shanxi Normal Univ, Coll Geog Sci, Linfen, Peoples R China 6.Tsinghua Univ, Dept Math Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Song, Penghan,Teng, Jiwen,Zhang, Xuemei,et al. Flyover Crustal Structures Beneath the Qinling Orogenic Belt and Its Tectonic Implications[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2018,123(8):6703-6718.
APA	Song, Penghan.,Teng, Jiwen.,Zhang, Xuemei.,Liu, Youshan.,Si, Xiang.,...&Dong, Xingpeng.(2018).Flyover Crustal Structures Beneath the Qinling Orogenic Belt and Its Tectonic Implications.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,123(8),6703-6718.
MLA	Song, Penghan,et al."Flyover Crustal Structures Beneath the Qinling Orogenic Belt and Its Tectonic Implications".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 123.8(2018):6703-6718.