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
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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). |
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