Drainage evolution in intermontane basins at the Qinling-Daba Mountains

doi:10.1007/s11430-020-9820-y

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	Drainage evolution in intermontane basins at the Qinling-Daba Mountains
	Xie, Wanting 4; Wang, Xianyan 4; Zhang, Hanzhi 4; Liu, Quanyu 3; Wang, Shejiang 1,2; Lu, Huayu 4
刊名	SCIENCE CHINA-EARTH SCIENCES
	2021-10-12
页码	20
关键词	Geomorphic index Zircon U-Pb geochronology Drainage network pattern River capture Ankang fault Intermountain basin South Qinling
ISSN号	1674-7313
DOI	10.1007/s11430-020-9820-y
通讯作者	Wang, Xianyan(xianyanwang@nju.edu.cn) ; Zhang, Hanzhi(hanzhizhang@nju.edu.cn)
英文摘要	River capture is of great significance to landform evolution and hominine migration. In the Qinling-Daba Mountains, there is a viewpoint that Jialing River captured Hanjiang River, but this is still controversial. In this paper, we discuss the drainage evolution processes in intermountain basins at the Qinling-Daba Mountains based on a combination of detrital zircon U-Pb geochronology and geomorphic indexes. We suggest that the Hanjiang River gradually captured the Jialing River from east to west, accompanied by the evolution of the ancient Yangtze River. In terms of geomorphic evidences, wide valleys did not match with discharge, and a series of wind gaps developed in the Shiquan-Ankang basin. In addition, the valley shapes and width-toheight ratios (Vf) indicate two possible rapid incisions. The hypsometric integrals (HI) reflect that the landform gradually changes from the old stage to the youth stage from west to east. The gC values show that the drainage divide is moving to the side of the Yuehe River, and the Yuehe River is gradually shrinking. According to the sedimentary records, the zircon U-Pb age distributions indicate the provenance change. The high-altitude terraces show three age peaks (200-250, 400-505, and 700-900 Ma), with the dominant Indosinian age peak (200-250 Ma), while the modern fluvial sediments only show a single peak of Jinning (700-900 Ma). These data show that there are two major river captures: (1) The ancient Hanjiang River cut through the regional compression ridge, and then captured the Hanzhong Basin river system (a part of the ancient Jialing river system) from east to west, and (2) The southern tributary captured the trunk with the uplift of the divide in the Shiquan-Ankang Basin, forming the modern drainage pattern in the upper Hanjiang River. The activities of the regional strike-slip fault, and the associated compression uplift played a key role in the river captures, the drainage evolution, and related landforms in the Shiquan-Ankang basin. In addition, it is shown that the evolution of the upper tributary basins lagged behind the response of the trunk channel to the tectonic activities and river captures. The interconnected wide valleys caused by river capture may have provided convenient geomorphological conditions for human migration into the Qinling-Daba Mountains along those river valleys.
资助项目	National Natural Science Foundation of China[41971005] ; National Natural Science Foundation of China[41522101] ; National Natural Science Foundation of China[41901004] ; Second Tibet Plateau Scientific Research[2019QZKK0205] ; Major Program of National Social Science Foundation of China[19ZDA225]
WOS关键词	U-PB AGE ; YANGTZE BLOCK ; RIVER CAPTURE ; CENTRAL CHINA ; LANDSCAPE EVOLUTION ; TRACE-ELEMENT ; FOPING AREA ; TECTONICS ; CONSTRAINTS ; GEOCHRONOLOGY
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000707954700001
资助机构	National Natural Science Foundation of China ; Second Tibet Plateau Scientific Research ; Major Program of National Social Science Foundation of China
内容类型	期刊论文
源URL	[http://119.78.100.205/handle/311034/18929]
专题	古脊椎动物与古人类研究所_图书馆1
通讯作者	Wang, Xianyan; Zhang, Hanzhi
作者单位	1.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China 2.Chinese Acad Sci, Key Lab Vertebrate Evolut & Human Origins, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China 3.Ankang Univ, Coll Tourism & Environm Resources, Ankang 725000, Peoples R China 4.Nanjing Univ, Sch Geog & Ocean Sci, Nanjing 210023, Peoples R China
推荐引用方式 GB/T 7714	Xie, Wanting,Wang, Xianyan,Zhang, Hanzhi,et al. Drainage evolution in intermontane basins at the Qinling-Daba Mountains[J]. SCIENCE CHINA-EARTH SCIENCES,2021:20.
APA	Xie, Wanting,Wang, Xianyan,Zhang, Hanzhi,Liu, Quanyu,Wang, Shejiang,&Lu, Huayu.(2021).Drainage evolution in intermontane basins at the Qinling-Daba Mountains.SCIENCE CHINA-EARTH SCIENCES,20.
MLA	Xie, Wanting,et al."Drainage evolution in intermontane basins at the Qinling-Daba Mountains".SCIENCE CHINA-EARTH SCIENCES (2021):20.