Wang Xunming1; Lang Lili1; Hua Ting2; Zhang Caixia2; Li Hui2
Source Publicationfrontiersofearthscience
AbstractThe geochemical characteristics of aeolian and surface materials in potential source areas of dust are frequently employed in environmental reconstructions as proxies of past climate and as source tracers of aeolian sediments deposited in downwind areas. However, varia- tions in the geochemical characteristics of these aeolian deposits that result from near-surface winds are currently poorly understood. In this study, we collected surface samples from the Ala Shah Plateau (a major potential dust source area in Central Asia) to determine the influence of aeolian processes on the geochemical characteristics of aeolian transported materials. Correlation analyses show that compared with surface materials, the elements in transported materials (e.g., Cu, As, Pb, Mn, Zn, Al, Ca, Fe, Ga, K, Mg, P, Rb, Co, Cr, Na, Nb, Si, and Zr) were subjected to significant sorting by aeolian processes, and the sorting also varied among different particle size fractions and elements. Variations in wind velocity were significantly correlated with the contents of Cr, Ga, Sr, Ca, Y, Nd, Zr, Nb, Ba, and Al, and with the Zr/Al, Zr/Rb, K/Ca, Sr/Ca, Rb/Sr, and Ca/Al ratios. Given the great variation in the geochemical characteristics of materials transported under different aeolian processes relative to those of the source materials, these results indicate that considerable uncertainty may be introduced to analyses by using surface materials to trace the potential source areas of aeolian deposits that accumulate in downwind areas.
Document Type期刊论文
First Author Affilication中国科学院地理科学与资源研究所
Recommended Citation
GB/T 7714
Wang Xunming,Lang Lili,Hua Ting,et al. theeffectsofsortingbyaeolianprocessesonthegeochemicalcharacteristicsofsurfacematerialsawindtunnelexperiment[J]. frontiersofearthscience,2018,012(001):86.
APA Wang Xunming,Lang Lili,Hua Ting,Zhang Caixia,&Li Hui.(2018).theeffectsofsortingbyaeolianprocessesonthegeochemicalcharacteristicsofsurfacematerialsawindtunnelexperiment.frontiersofearthscience,012(001),86.
MLA Wang Xunming,et al."theeffectsofsortingbyaeolianprocessesonthegeochemicalcharacteristicsofsurfacematerialsawindtunnelexperiment".frontiersofearthscience 012.001(2018):86.
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