Diachronous Growth of the Altyn Tagh Mountains: Constraints on Propagation of the Northern Tibetan Margin From (U-Th)/He Dating

doi:10.1029/2017JB014844

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

	Diachronous Growth of the Altyn Tagh Mountains: Constraints on Propagation of the Northern Tibetan Margin From (U-Th)/He Dating
	Shi, Wenbei 1,2; Wang, Fei 1,2,3; Yang, Liekun 1,2; Wu, Lin 1,2; Zhang, Weibin 1,2
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
	2018-07-01
卷号	123 期号:7 页码:6000-6018
关键词	Altyn Tagh Mountains (U-Th) He dating exhumation Cenozoic
ISSN号	2169-9313
DOI	10.1029/2017JB014844
英文摘要	The sinistral Altyn Tagh strike-slip fault demarcates the northern boundary of the Qinghai-Tibetan Plateau; however, the significance and timing of activity along the fault are debated. Here new apatite and zircon (U-Th)/He data are presented, revealing the exhumation history of the Altyn Tagh Mountains from crustal depths of similar to 2-7km. Studies of rock samples from the Altun Shan region show that they were located close to the surface during the Early Cretaceous and remained so until about 40Ma. Samples from the Subei and Dangjin Pass areas, on the other hand, record a period of rapid exhumation at 202Ma, and samples from the Qiemo area record a period of continuous exhumation between similar to 20 and 12Ma at a rate of 0.046-0.013+0.007year, plus a further rapid cooling event at 7-5.5Ma. Thus, significantly more exhumation has occurred toward the southwestern section of the Altyn Tagh Fault Zone, indicating a decrease in tectonic uplift toward the northeast since the Miocene. During the late Miocene, the Tarim Block began to subduct beneath the northern Tibetan margin, resulting in rapid exhumation of the central section of the Altyn Tagh Fault Zone. In accordance with previous studies, the present results support a model of northward propagation and expansion of the Qinghai-Tibetan Plateau during the Cenozoic.
资助项目	National Natural Science Foundation of China[41673015] ; "Strategic Priority Research Program" of the Chinese Academy of Sciences[XDB03020203]
WOS关键词	FISSION-TRACK EVIDENCE ; LOW-TEMPERATURE THERMOCHRONOMETRY ; CENOZOIC COOLING HISTORY ; INDIA-ASIA COLLISION ; SHAN NW CHINA ; RADIATION-DAMAGE ; HELIUM DIFFUSION ; QILIAN SHAN ; QAIDAM BASIN ; TOPOGRAPHIC GROWTH
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000442588900035
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; "Strategic Priority Research Program" of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/88555]
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	Shi, Wenbei
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Earth Sci, Beijing, Peoples R China 3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Shi, Wenbei,Wang, Fei,Yang, Liekun,et al. Diachronous Growth of the Altyn Tagh Mountains: Constraints on Propagation of the Northern Tibetan Margin From (U-Th)/He Dating[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2018,123(7):6000-6018.
APA	Shi, Wenbei,Wang, Fei,Yang, Liekun,Wu, Lin,&Zhang, Weibin.(2018).Diachronous Growth of the Altyn Tagh Mountains: Constraints on Propagation of the Northern Tibetan Margin From (U-Th)/He Dating.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,123(7),6000-6018.
MLA	Shi, Wenbei,et al."Diachronous Growth of the Altyn Tagh Mountains: Constraints on Propagation of the Northern Tibetan Margin From (U-Th)/He Dating".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 123.7(2018):6000-6018.