The long-term denudation rate of granitic regolith in Qinhuangdao, North China determined from the in situ depth profile of the cosmogenic nuclides 26 Al and 10 Be
作者: Lifeng CuiCongqiang LiuSheng XuZhiqi ZhaoChenglong TuTaoze LiuHu Ding
作者单位: 1State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences
2University of Chinese Academy of Sciences
3Scottish Universities Environmental Research Centre
刊名: Chinese Science Bulletin, 2014, Vol.59 (34), pp.4823-4828
来源数据库: Springer Nature Journal
DOI: 10.1007/s11434-014-0601-2
关键词: Weathering ratePhysical erosionSoil erosionCarbon cycleClimate change
原始语种摘要: Abstract(#br)This study quantifies the surface denudation rate of granitic regolith via the application of the in situ cosmogenic 26 Al and 10 Be depth profile in China. The concentration ranges of 26 Al and 10 Be in the quartz along the ~3-m granitic regolith profile in Qinhuangdao are (4.9–23.1) × 10 5 and (2.3–36.6) × 10 4 atoms/g, respectively. With the exception of the surface sample, both 26 Al and 10 Be concentrations decrease exponentially with sample depth. The Chi -square best-fitting results revealed a total denudation rate of ~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...
全文获取路径: Springer Nature  (合作)
影响因子:1.319 (2012)

  • granitic 花岗状的
  • cosmogenic 宇宙成因的
  • regolith 表皮土
  • depth 
  • denudation 剥蚀
  • profile 纵断图
  • China 中国