干旱区生态环境知识资源中心(Arid): Late Pleistocene left-lateral slip rates of the Gulang Fault and its tectonic implications in eastern Qilian Shan (NE Tibetan Plateau), China

Arid

DOI	10.1016/j.tecto.2019.02.013
	Late Pleistocene left-lateral slip rates of the Gulang Fault and its tectonic implications in eastern Qilian Shan (NE Tibetan Plateau), China
	Zhang, Yi-Peng 1; Zheng, Wen-Jun 1; Zhang, Dong-Li 1; Zhang, Pei-Zhen 1; Yuan, Dao-Yang 2; Tian, Qing-Ying 1; Zhang, Bo-Xuan 1; Liang, Shu-Min 1
通讯作者	Zhang, Dong-Li
来源期刊	TECTONOPHYSICS
ISSN	0040-1951
EISSN	1879-3266
出版年	2019
卷号	756 页码:97-111
英文摘要	The late Pleistocene deformation pattern in the eastern Qilian Shan remains controversial. Study of the geometry and slip rate of the fault holds crucial value for better understanding the regional deformation pattern. The active E-W trending Gulang and Tianjing Shan Fault Zone is located in the southern boundary of the Tengger Desert which plays a significant role in tectonic deformation and slip transfer in the NE Tibetan Plateau. Geomorphic mapping of the active fault traces reveal that the Gulang fault is composed of two segments, separated by the Guanjia Tai pull-apart basin. Offset geomorphic features indicate that the Gulang fault appears to be primarily sinistral strike-slip with no reverse component. Based on offset gullies/terraces and optically stimulated luminescence dating of offset-related sediments, we obtain a consistent late Pleistocene slip rate of similar to 2.5 mm/a along the western and eastern segments of the Gulang Fault. Meanwhile, the slip vectors indicate the Gulang fault redistributes strain and transforms displacement along the Haiyuan fault, accommodating the westward motion of the Gobi-Alashan block. Moreover, a devastating earthquake of Ms 8.0 struck Gulang on 23rd May 1927. Geomorphically fresh fault scarps and surface rupture zone are observed at Gulang Fault, we modify the Modified Mercalli Intensities (MMI) and revise the isoseismal map for the Gulang earthquake. Combining with the high-resolution deep seismic-reflection data, the Gulang fault may be the source of the earthquake. Regionally, GPS velocities indicate that faulting, crustal shortening, and basin/block rotation accommodate deformation of the plateau's northern margin. In conclusion, the fault geometry, kinematics, and regional GPS velocities reflect that this region experiences eastward movement of the northeastern Tibetan Plateau relative to the Gobi-Alashan.
英文关键词	Late Pleistocene slip rate Gulang fault Gulang earthquake Eastern Qilian Shan NE Tibetan Plateau
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000463979600006
WOS关键词	LATE QUATERNARY SLIP ; HUI AUTONOMOUS REGION ; HAIYUAN FAULT ; NORTHEASTERN MARGIN ; STRIKE-SLIP ; CENOZOIC TECTONICS ; LARGE EARTHQUAKES ; ACTIVE FAULTS ; DEFORMATION ; EVOLUTION
WOS类目	Geochemistry & Geophysics
WOS研究方向	Geochemistry & Geophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/219056
作者单位	1.Sun Yat Sen Univ, Sch Earth Sci & Engn, Guangdong Prov Key Lab Geodynam & Geohazards, Guangzhou 510275, Guangdong, Peoples R China; 2.China Earthquake Adm, Lanzhou Inst Seismol, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yi-Peng,Zheng, Wen-Jun,Zhang, Dong-Li,et al. Late Pleistocene left-lateral slip rates of the Gulang Fault and its tectonic implications in eastern Qilian Shan (NE Tibetan Plateau), China[J],2019,756:97-111.
APA	Zhang, Yi-Peng.,Zheng, Wen-Jun.,Zhang, Dong-Li.,Zhang, Pei-Zhen.,Yuan, Dao-Yang.,...&Liang, Shu-Min.(2019).Late Pleistocene left-lateral slip rates of the Gulang Fault and its tectonic implications in eastern Qilian Shan (NE Tibetan Plateau), China.TECTONOPHYSICS,756,97-111.
MLA	Zhang, Yi-Peng,et al."Late Pleistocene left-lateral slip rates of the Gulang Fault and its tectonic implications in eastern Qilian Shan (NE Tibetan Plateau), China".TECTONOPHYSICS 756(2019):97-111.