Variations in chemical compositions of the eolian dust in Chinese Loess Plateau over the past 2.5 Ma and chemical weathering in the Asian inland
文献类型：期刊论文
| 作者 | Chen, J; An, ZS; Liu, LW; Ji, JF; Yang, JD; Chen, Y |
| 刊名 | SCIENCE IN CHINA SERIES D-EARTH SCIENCES
 |
| 出版日期 | 2001-05 |
| 卷号 | 44期号:5页码:403-413 |
| 关键词 | dust source region continental weathering acid leaching aridity global cooling |
| DOI | 10.1007/BF02909779 |
| 文献子类 | Article |
| 英文摘要 | Major and trace elements as well as strontium isotopic composition have been analyzed on the acid-insoluble (Al) phase of the loess-paleosol sequence from Luochuan, Shaanxi Province, China. Results show that the chemical composition of Al phase of loess and paleosols is distinctive to the average composition of upper continental crust (UCC), characterized by depletion of mobile elements Na, Ca and Sr. The distribution pattern of elements in Al phase reveals that initial dust, derived from a vast area of Asian inland, has suffered from Na- and Ca-removed chemical weathering compared to UCC. Some geochemical parameters (such as CIA values, Na/K, Rb/Sr and Sr-87/Sr-88 ratios) display a regular variation and evolution, reflecting that the chemical weathering in the source region of loess deposits has decreased gradually since 2.5 Ma with the general increase of global ice volume. This coincidence reflects that the aridity of Asian inland since the Quaternary is a possible regional response to the global climate change. |
| 学科主题 | Geology |
| WOS关键词 | GEOCHEMISTRY ; CLIMATES ; TRACERS |
| WOS研究方向 | Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000169557300003 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.ieecas.cn/handle/361006/11901]  |
| 专题 | 黄土与第四纪地质国家重点实验室（1985-2004） |
| 推荐引用方式 GB/T 7714 | Chen, J,An, ZS,Liu, LW,et al. Variations in chemical compositions of the eolian dust in Chinese Loess Plateau over the past 2.5 Ma and chemical weathering in the Asian inland[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2001,44(5):403-413. |
| APA | Chen, J,An, ZS,Liu, LW,Ji, JF,Yang, JD,&Chen, Y.(2001).Variations in chemical compositions of the eolian dust in Chinese Loess Plateau over the past 2.5 Ma and chemical weathering in the Asian inland.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,44(5),403-413. |
| MLA | Chen, J,et al."Variations in chemical compositions of the eolian dust in Chinese Loess Plateau over the past 2.5 Ma and chemical weathering in the Asian inland".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 44.5(2001):403-413. |
入库方式： OAI收割
来源：地球环境研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。