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Denudation rates of granitic regolith along climatic gradient in Eastern China

文献类型：期刊论文

作者Cui, Lifeng3,4; Yang, Ye4; Xu, Sheng4; Zhao, Zhiqi2; Mao, Hairuo3; Zhang, Xiaolong4; Tu, Chenglong3; Zhang, Zhuojun3; Liu, Wenjing1; Liu, Congqiang4
刊名GEOMORPHOLOGY
出版日期2021-10-01
卷号390页码:12
关键词Granitic regolith Cosmogenic nuclides Denudation rate Monsoonal zone East China
ISSN号0169-555X
DOI10.1016/j.geomorph.2021.107872
英文摘要In order to assess the impact of the monsoonal climate on denudation, physical erosion, and chemical weathering processes, we measured cosmogenic nuclides Be-10, Al-26 and immobile element Zr in five granitic regolith profiles across Northeast to South China. The Be-10 and Al-26 concentrations are 2.98 x 10(4)-25.20 x 10(4) atoms g(-1) and 2.18 x 10(5)-16.62 x 10(5) atoms g(-1), respectively. Compiling previous depth profile data from Leymon and Beacon Heights, we find that the Al-26/Be-10 ratios systematically increase or decrease with the depth. Our numerical model shows that muons contributions can produce higher Al-26/Be-10 ratios (greater than 6.75) in both steadystate and non-steady state scenarios, which can result in underestimated burial age (initial Al-26/Be-10 ratio) and exaggerated denudation rates (due to non-negligible production from muons) for the application of dual nuclide in Earth Science. The denudation rates, chemical weathering rates and physical erosion rates derived from cosmogenic nuclides and Zr are 28-45, 9-31 and 6-22 m Ma(-1), respectively. Chemical weathering rates, excluding the JLN profile, comprise a large proportion of the denudation rates (greater than 50%). Despite the wide range of mean annual precipitation (MAP) and mean annual temperature (MAT), the denudation rates vary without an apparent gradient from northeast to south. However, the physical erosion and chemical weathering results show good relationships with climate, suggesting the limitation type changed from kinetic limited in the north, to supply-limited in the south. Chemical weathering indices (chemical index of alteration, CIA and weathering intensity factor, WIF) also indicate that the extent of chemical weathering strengthens from northeast to south and increases with chemical weathering rates, but decreases with physical erosion rates. (C) 2021 Elsevier B.V. All rights reserved.
WOS关键词COSMOGENIC BE-10 ; EROSION RATES ; PHYSICAL EROSION ; TIBETAN PLATEAU ; DEPTH PROFILE ; AL-26 ; SEDIMENT ; BURIAL ; RIVER ; GEOCHEMISTRY
资助项目National Key Research and Development Program of China[2020YFA0607700] ; National Natural Science Foundation of China[41130536] ; National Natural Science Foundation of China[41603018] ; Chinese Academy of Sciences "Light of West China" Program
WOS研究方向Physical Geography ; Geology
语种英语
WOS记录号WOS:000687448000007
出版者ELSEVIER
资助机构National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences "Light of West China" Program ; Chinese Academy of Sciences "Light of West China" Program ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences "Light of West China" Program ; Chinese Academy of Sciences "Light of West China" Program ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences "Light of West China" Program ; Chinese Academy of Sciences "Light of West China" Program ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences "Light of West China" Program ; Chinese Academy of Sciences "Light of West China" Program
源URL[http://ir.iggcas.ac.cn/handle/132A11/102619]  
专题中国科学院地质与地球物理研究所
通讯作者Xu, Sheng; Liu, Congqiang
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
2.Changan Univ, Sch Earth Sci & Resources, Xian 710054, Peoples R China
3.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550002, Peoples R China
4.Tianjin Univ, Sch Earth Syst Sci, Inst Surface Earth Syst Sci, Tianjin 300072, Peoples R China
推荐引用方式
GB/T 7714		 Cui, Lifeng,Yang, Ye,Xu, Sheng,et al. Denudation rates of granitic regolith along climatic gradient in Eastern China[J]. GEOMORPHOLOGY,2021,390:12.
APA Cui, Lifeng.,Yang, Ye.,Xu, Sheng.,Zhao, Zhiqi.,Mao, Hairuo.,...&Liu, Congqiang.(2021).Denudation rates of granitic regolith along climatic gradient in Eastern China.GEOMORPHOLOGY,390,12.
MLA Cui, Lifeng,et al."Denudation rates of granitic regolith along climatic gradient in Eastern China".GEOMORPHOLOGY 390(2021):12.

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来源：地质与地球物理研究所

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