globalchange  > 影响、适应和脆弱性
DOI: 10.1016/j.epsl.2018.04.017
Scopus记录号: 2-s2.0-85046660339
论文题名:
Centennial- to millennial-scale hard rock erosion rates deduced from luminescence-depth profiles
作者: Sohbati R.; Liu J.; Jain M.; Murray A.; Egholm D.; Paris R.; Guralnik B.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2018
卷: 493
起始页码: 218
结束页码: 230
语种: 英语
英文关键词: erosion rate ; exposure dating ; luminescence ; OSL ; rock surface ; weathering rate
Scopus关键词: Erosion ; Luminescence ; Rocks ; Earth surface process ; Erosion rates ; exposure dating ; Preferential samplings ; Relative contribution ; Rock surfaces ; Temporal and spatial scale ; Weathering rates ; Weathering ; boulder ; denudation ; erosion rate ; hard rock ; landscape evolution ; luminescence dating ; weathering rate ; China ; Pamirs
英文摘要: The measurement of erosion and weathering rates in different geomorphic settings and over diverse temporal and spatial scales is fundamental to the quantification of rates and patterns of earth surface processes. A knowledge of the rates of these surface processes helps one to decipher their relative contribution to landscape evolution – information that is crucial to understanding the interaction between climate, tectonics and landscape. Consequently, a wide range of techniques has been developed to determine short- (<102 a) and long-term (>104 a) erosion rates. However, no method is available to quantify hard rock erosion rates at centennial to millennial timescales. Here we propose a novel technique, based on the solar bleaching of luminescence signals with depth into rock surfaces, to bridge this analytical gap. We apply our technique to glacial and landslide boulders in the Eastern Pamirs, China. The calculated erosion rates from the smooth varnished surfaces of 7 out of the 8 boulders sampled in this study vary between <0.038±0.002 and 1.72±0.04 mmka−1 (the eighth boulder gave an anomalously high erosion rate, possibly due to a recent chipping/cracking loss of surface). Given this preferential sampling of smooth surfaces, assumed to arise from grain-by-grain surface loss, we consider these rates as minimum estimates of rock surface denudation rates in the Eastern Pamirs, China. © 2018 Elsevier B.V.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109867
Appears in Collections:影响、适应和脆弱性
气候变化事实与影响

Files in This Item:

There are no files associated with this item.


作者单位: Center for Nuclear Technologies, Technical University of Denmark, Roskilde, DK 4000, Denmark; The Nordic Laboratory for Luminescence Dating, Department of Geoscience, Aarhus University, Roskilde, DK 4000, Denmark; State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, China; Department of Geoscience, Aarhus University, Aarhus, 8000, Denmark; Department of Computing and Mathematics, University of Abertay, Dundee, DD1 1HG, United Kingdom; Soil Geography and Landscape group, the Netherlands Centre for Luminescence Dating, Wageningen University, Droevendaalsesteeg 3, Wageningen, 6708PB, Netherlands

Recommended Citation:
Sohbati R.,Liu J.,Jain M.,et al. Centennial- to millennial-scale hard rock erosion rates deduced from luminescence-depth profiles[J]. Earth and Planetary Science Letters,2018-01-01,493
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Sohbati R.]'s Articles
[Liu J.]'s Articles
[Jain M.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Sohbati R.]'s Articles
[Liu J.]'s Articles
[Jain M.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Sohbati R.]‘s Articles
[Liu J.]‘s Articles
[Jain M.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.