Patterns of landscape evolution on the central and northern Tibetan   Plateau investigated using in-situ produced Be-10 concentrations from   river Sediments

doi:10.1016/j.epsl.2014.04.045

CORC > 北京大学 > 城市与环境学院

	Patterns of landscape evolution on the central and northern Tibetan Plateau investigated using in-situ produced Be-10 concentrations from river Sediments
	Li, Yingkui ; Li, Dewen ; Liu, Gengnian ; Harbor, Jon ; Caffee, Marc ; Stroeven, Arjen P.
刊名	earth and planetary science letters
	2014
关键词	cosmogenic nuclides basin-wide erosion rates Tibetan Plateau Kunlun Shan landscape evolution LATE QUATERNARY GLACIATION ACTIVE MOUNTAIN-RANGES EROSION RATES KUNLUN FAULT COSMOGENIC NUCLIDES SLIP-RATE DENUDATION RATES TOPOGRAPHIC CONTROLS ALLUVIAL SEDIMENT GLOBAL CLIMATE
DOI	10.1016/j.epsl.2014.04.045
英文摘要	Quantifying long-term erosion rates across the Tibetan Plateau and its bordering mountains is of critical importance to an understanding of the interaction between climate, tectonic movement, and landscape evolution. We present a new dataset of basin-wide erosion rates from the central and northern Tibetan Plateau derived using in-situ produced Be-10 concentrations of river sediments. Basin-wide erosion rates from the central plateau range from 10.1 +/- 0.9 to 36.8 +/- 3.2 mm/kyr, slightly higher than published local erosion rates measured from bedrock surfaces. These values indicate that long-term downwearing of plateau surfaces proceeds at low rates and that the landscape is demonstrably stable in the central plateau. In contrast, basin-wide erosion rates from the Kunlun Shan on the northern Tibetan Plateau range from 19.9 +/- 1.7 to 163.2 +/- 15.9 mm/kyr. Although the erosion rates of many of these basins are much higher than the rates from the central plateau, they are lower than published basin-wide erosion rates from other mountains fringing the Tibetan Plateau, probably because the basins in the Kunlun Shan include both areas of low-relief plateau surface and high-relief mountain catchments and may also result from retarded fluvial sediment transport in an arid climate. Significantly higher basin-wide erosion rates derived from the Tibetan Plateau margin, compared to the central plateau, reflect a relatively stable plateau surface that is being dissected at its margins by active fluvial erosion. (C) 2014 Elsevier B.V. All rights reserved.; Geochemistry & Geophysics; SCI(E); EI; 1; ARTICLE; yli32@utk.edu; 77-89; 398
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/212320]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Li, Yingkui,Li, Dewen,Liu, Gengnian,et al. Patterns of landscape evolution on the central and northern Tibetan Plateau investigated using in-situ produced Be-10 concentrations from river Sediments[J]. earth and planetary science letters,2014.
APA	Li, Yingkui,Li, Dewen,Liu, Gengnian,Harbor, Jon,Caffee, Marc,&Stroeven, Arjen P..(2014).Patterns of landscape evolution on the central and northern Tibetan Plateau investigated using in-situ produced Be-10 concentrations from river Sediments.earth and planetary science letters.
MLA	Li, Yingkui,et al."Patterns of landscape evolution on the central and northern Tibetan Plateau investigated using in-situ produced Be-10 concentrations from river Sediments".earth and planetary science letters (2014).