Rb and Sr geochemical characterization of the Chinese Loess stratigraphy and its implications for palaeomonsoon climate
文献类型：期刊论文
| 作者 | Chen, J; Wang, YJ; Chen, Y; Liu, LW; Ji, JF; Lu, HY |
| 刊名 | ACTA GEOLOGICA SINICA-ENGLISH EDITION
 |
| 出版日期 | 2000 |
| 卷号 | 74期号:2页码:279-288 |
| 关键词 | Rb and Sr geochemical characterization Rb/Sr ratios loess sequence palaeomonsoon climate Loess Plateau |
| 文献子类 | Article; Proceedings Paper |
| 英文摘要 | Concentrations and distributions of Rb and Sr in loess and palaeosol samples from the Luochuan profile have been studied, in grain-size fractions and chemical forms. Results show that Rb is quite rich in the fraction of less than 2 mu m, and exits only in the residual phase, while Sr is distributed in sand and silt fractions, occurring in the residual and carbonate phases. Therefore, variations of the concentrations of Rb and Sr in loess and palaeosols are closely related not only to dustfall compositions depending on winter monsoon wind strength but also to summer monsoon-induced pedogenic intensity. This indicates that variations of Rb/Sr ratio in Chinese loess sequences represent cyclic alternations of East Asian summer and winter monsoon climates on the orbital time-scale. Variations in Sr concentrations along the sequence bear a high similarity to the oxygen isotope record of the deep sea sediments over the past 2.5 Ma, whereas variations in Rb concentrations are in good agreement with the record of magnetic susceptibility determined with the duplicated samples from the same profile. This suggests that (1) the high-latitude ice volume is responsible for East Asian monsoon variations and (2) the signal of magnetic susceptibility depends dominantly on pedogenesis in Chinese loess sequences. |
| 学科主题 | Geology |
| WOS关键词 | MAGNETIC-SUSCEPTIBILITY ; PALEOCLIMATIC IMPLICATIONS ; PALEOSOL SEQUENCES ; PLATEAU ; RECORD ; SCALE |
| WOS研究方向 | Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000088935900026 |
| 出版者 | GEOLOGICAL SOC CHINA |
| 源URL | [http://ir.ieecas.cn/handle/361006/12068]  |
| 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,Wang, YJ,Chen, Y,et al. Rb and Sr geochemical characterization of the Chinese Loess stratigraphy and its implications for palaeomonsoon climate[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2000,74(2):279-288. |
| APA | Chen, J,Wang, YJ,Chen, Y,Liu, LW,Ji, JF,&Lu, HY.(2000).Rb and Sr geochemical characterization of the Chinese Loess stratigraphy and its implications for palaeomonsoon climate.ACTA GEOLOGICA SINICA-ENGLISH EDITION,74(2),279-288. |
| MLA | Chen, J,et al."Rb and Sr geochemical characterization of the Chinese Loess stratigraphy and its implications for palaeomonsoon climate".ACTA GEOLOGICA SINICA-ENGLISH EDITION 74.2(2000):279-288. |
入库方式： OAI收割
来源：地球环境研究所
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