The long-term denudation rate of granitic regolith in Qinhuangdao, North China determined from the in situ depth profile of the cosmogenic nuclides Al-26 and Be-10

	The long-term denudation rate of granitic regolith in Qinhuangdao, North China determined from the in situ depth profile of the cosmogenic nuclides Al-26 and Be-10
	Lifeng Cui; Congqiang Liu; Sheng Xu; Zhiqi Zhao; Chenglong Tu; Taoze Liu; Hu Ding
	2014
Source Publication	Chinese Science Bulletin
Volume	59 Issue:34 Pages:4823-4828
Abstract	This study quantifies the surface denudation rate of granitic regolith via the application of the in situ cosmogenic Al-26 and Be-10 depth profile in China. The concentration ranges of Al-26 and Be-10 in the quartz along the similar to 3-m granitic regolith profile in Qinhuangdao are (4.9-23.1) x 10(5) and (2.3-36.6) x 10(4) atoms/g, respectively. With the exception of the surface sample, both Al-26 and Be-10 concentrations decrease exponentially with sample depth. The Chi-square best-fitting results revealed a total denudation rate of similar to 9 m/Ma averaged over a 10(3)-10(5) a timescale, which is lower than the values observed in global granitic outcrops. Compared with global datasets, the flat terrain due to the lack of tectonic activities is most likely the dominant factor that controls the local denudation process. The surface sample offsets from the theoretical cosmogenic nuclide distribution implies that the denudation rate from river basin sediment could be overestimated because of the bioturbation in the surficial soil layer.
Keyword	Weathering Rate Physical Erosion Soil Erosion Carbon Cycle Climate Change
Subject Area	环境地球化学
Indexed By	SCI
Language	英语
Document Type	期刊论文
Identifier	http://ir.gyig.ac.cn/handle/352002/5291
Collection	环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文环境地球化学国家重点实验室
Recommended Citation GB/T 7714	Lifeng Cui,Congqiang Liu,Sheng Xu,et al. The long-term denudation rate of granitic regolith in Qinhuangdao, North China determined from the in situ depth profile of the cosmogenic nuclides Al-26 and Be-10[J]. Chinese Science Bulletin,2014,59(34):4823-4828.
APA	Lifeng Cui.,Congqiang Liu.,Sheng Xu.,Zhiqi Zhao.,Chenglong Tu.,...&Hu Ding.(2014).The long-term denudation rate of granitic regolith in Qinhuangdao, North China determined from the in situ depth profile of the cosmogenic nuclides Al-26 and Be-10.Chinese Science Bulletin,59(34),4823-4828.
MLA	Lifeng Cui,et al."The long-term denudation rate of granitic regolith in Qinhuangdao, North China determined from the in situ depth profile of the cosmogenic nuclides Al-26 and Be-10".Chinese Science Bulletin 59.34(2014):4823-4828.

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