干旱区生态环境知识资源中心(Arid): Late Cenozoic river system reorganization and its origin within the Qilian Shan, NE Tibet

Arid

DOI	10.1016/j.jsg.2020.104128
	Late Cenozoic river system reorganization and its origin within the Qilian Shan, NE Tibet
	Meng, Kai; Wang, Erchie; Chu, Jean J.; Su, Zhe; Fan, Chun
通讯作者	Meng, K
来源期刊	JOURNAL OF STRUCTURAL GEOLOGY
ISSN	0191-8141
出版年	2020
卷号	138
英文摘要	The northward growth of the Tibetan Plateau has reshaped the Qilian Shan Orogen with prolonged history along two large strike-slip faults, the Altyn Tagh Fault on the west and the Haiyuan Fault on the east. This orogen with its high elevation is referred to as the Water Tower of the northeastern margin of the Tibetan Plateau, shedding many rivers into the surrounding arid areas in a way different from all other orogens within the plateau. The factors that control the evolution of these rivers in this highly active region, particularly their relative contribution through time, are not well known. Our study presents evidence that the left-lateral movement of the Haiyuan Fault (one of the largest active strike-slip faults within the Tibetan Plateau since -13-8 Ma) created a series of NW-trending linear thrust-fold belts, aligned in an en echelon pattern along the trace of the fault. This completely reconfigured the flow direction of the rivers within the Qilian Shan Range: from N-S rivers that flowed into the Hexi Corridor and Qaidam Basin, to today's W-E rivers flowing into the Tarim Basin and Longxi Basin, along a series of NW-trending linear thrust-folds belt, aligned in an en echelon pattern along the trace of the Haiyuan Fault on the north and south. This river system reorganization event is corroborated by sedimentary and geochronologic evidence within the intermountain basins where these rivers flow. The Longxi Basin, the largest intermountain basin surrounding the Qilian Shan on the east, was drained by rivers flowing east, which were dammed by the uplift of the Liupan Shan since -10-8 Ma to form a large lake. The second river system reorganization again occurred through climate change in -1.8 Ma. It included the incision of the Yellow River capturing major rivers and halting their flow to the southeast. It is concluded that the Haiyuan Fault plays a crucial role not only in the lateral growth of the Tibetan Plateau but also in the uplift of the Qilian Shan, which led to the river system reorganization.
英文关键词	River system reorganization Late Cenozoic Haiyuan Fault Qilian Shan Orogen Tibetan Plateau
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000566364500002
WOS关键词	ALTYN-TAGH FAULT ; WESTERN HAIYUAN FAULT ; APATITE FISSION-TRACK ; LEFT-SLIP RATE ; QAIDAM BASIN ; NORTHEASTERN MARGIN ; TECTONIC EVOLUTION ; YELLOW-RIVER ; HEXI CORRIDOR ; TOPOGRAPHIC GROWTH
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
来源机构	中国科学院地质与地球物理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326054
作者单位	[Meng, Kai] Univ Waikato, Sch Sci, Hamilton 3240, New Zealand; [Meng, Kai; Wang, Erchie; Chu, Jean J.] Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China; [Su, Zhe] China Earthquake Adm, Key Lab Crustal Dynam, Inst Crustal Dynam, Beijing 100085, Peoples R China; [Fan, Chun] China Univ Geosci, Sch Energy Resources, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Meng, Kai,Wang, Erchie,Chu, Jean J.,et al. Late Cenozoic river system reorganization and its origin within the Qilian Shan, NE Tibet[J]. 中国科学院地质与地球物理研究所,2020,138.
APA	Meng, Kai,Wang, Erchie,Chu, Jean J.,Su, Zhe,&Fan, Chun.(2020).Late Cenozoic river system reorganization and its origin within the Qilian Shan, NE Tibet.JOURNAL OF STRUCTURAL GEOLOGY,138.
MLA	Meng, Kai,et al."Late Cenozoic river system reorganization and its origin within the Qilian Shan, NE Tibet".JOURNAL OF STRUCTURAL GEOLOGY 138(2020).