Initial rupture and displacement on the Altyn Tagh fault, northern   Tibetan Plateau: Constraints based on residual Mesozoic to Cenozoic   strata in the western Qaidam Basin

doi:10.1130/GES01070.1

CORC > 北京大学 > 地球与空间科学学院

	Initial rupture and displacement on the Altyn Tagh fault, northern Tibetan Plateau: Constraints based on residual Mesozoic to Cenozoic strata in the western Qaidam Basin
	Cheng, Feng ; Guo, Zhaojie ; Jenkins, Hillary S. ; Fu, Suotang ; Cheng, Xiang
刊名	GEOSPHERE
	2015
关键词	EASTERN KUNLUN RANGE U-PB GEOCHRONOLOGY DETRITAL-ZIRCON GEOCHRONOLOGY INDIA-ASIA COLLISION STRIKE-SLIP-FAULT NORTHWEST CHINA NW CHINA TECTONIC EVOLUTION TIAN-SHAN PALEOMAGNETIC CONSTRAINTS
DOI	10.1130/GES01070.1
英文摘要	The Altyn Tagh fault, located in the northern Tibetan Plateau, is a large left-lateral strike-slip fault heavily responsible for the growth and formation of the plateau during Cenozoic time. Despite its significance, the initial timing and kinematic patterns of movement along the Altyn Tagh fault remain highly debated. Here, we present a detailed analysis of the stratigraphy and geochronology of three key lithologic sections (Tula, Anxi, and Caishiling) along the Altyn Tagh fault to better understand this kinematic history. By correlating stratigraphic contacts and lithology with the U-Pb age spectra of Mesozoic samples within the western Qaidam Basin, we find the Altyn Tagh fault has experienced a total of similar to 360 km of displacement during the Cenozoic. By combining seismic profile data with geologic observations, we divide the activity along this fault into two distinct stages of motion: (1) an initial stage, which occurred between early Eocene (ca. 49 Ma) and mid-Miocene time (ca. 15 Ma) and resulted in similar to 170 km of offset, and (2) an early stage, which began in the late Miocene Epoch and continues into the present, resulting in similar to 190 km of offset along the fault. We identify the Tula and Anxi sections as piercing points along the western segment of the Altyn Tagh fault and define these regions as residual parts of the original Qaidam Basin. These estimates suggest that motion along the Altyn Tagh fault has accelerated from an average left-lateral strike-slip rate of similar to 5.0 mm/yr during initial stage faulting to a rate of similar to 12.6 mm/yr between the late Miocene Epoch and present day.; National Oil and Gas Scientific and Technologic Major Programs of China [ZX05003]; China Scholarship Council (Egide Cai Yuanpei program); SCI(E); EI; ARTICLE; 3; 921-942; 11
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/419588]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Cheng, Feng,Guo, Zhaojie,Jenkins, Hillary S.,et al. Initial rupture and displacement on the Altyn Tagh fault, northern Tibetan Plateau: Constraints based on residual Mesozoic to Cenozoic strata in the western Qaidam Basin[J]. GEOSPHERE,2015.
APA	Cheng, Feng,Guo, Zhaojie,Jenkins, Hillary S.,Fu, Suotang,&Cheng, Xiang.(2015).Initial rupture and displacement on the Altyn Tagh fault, northern Tibetan Plateau: Constraints based on residual Mesozoic to Cenozoic strata in the western Qaidam Basin.GEOSPHERE.
MLA	Cheng, Feng,et al."Initial rupture and displacement on the Altyn Tagh fault, northern Tibetan Plateau: Constraints based on residual Mesozoic to Cenozoic strata in the western Qaidam Basin".GEOSPHERE (2015).