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Variation of Zr/Rb ratios on the Loess Plateau of Central China during the last 130000 years and its implications for winter monsoon | |
Liu, LW; Chen, J; Chen, Y; Ji, JF; Lu, HY | |
2002-08 | |
发表期刊 | CHINESE SCIENCE BULLETIN |
卷号 | 47期号:15页码:1298-1302 |
文章类型 | Article |
摘要 | To rind a new index of winter monsoon without effects of chemical weathering and pedogenesis is an important task in loess research. Chemical analysis of five grain size fractions (i.e. >32 mum, 32-20 mum, 20-8 mum, 8-2 mum and <2 mum) show that Zr is enriched in coarser grain size, while Rb is concentrated in finer fractions. An excellent correlation occurs between Zr/Rb ratios and mean grain size in loess units (L1LL1 and L1LL2) from Huanxian and Xifeng sections, reflecting that Zr/Rb ratios increase when grain size is coarser. Due to immobility of the two elements during the postdepositional process, Zr/Rb ratios can eliminate the effect of weathering and pedogenesis and serve as an excellent proxy on winter monsoon variation. The Zr/Rb ratio curves of the Huanxian, Xifeng and Luochuan sections during the last 130000 years show that the winter monsoon strength was very weak during MIS 3, which corresponded to the intensity during MIS 5. |
关键词 | loess index of winter monsoon Zr/Rb ratios grain size |
学科领域 | Science & Technology - Other Topics |
DOI | 10.1360/02tb9288 |
关键词[WOS] | GRAIN-SIZE ; CYCLE |
收录类别 | SCI ; SCIE |
语种 | 英语 |
WOS研究方向 | Multidisciplinary Sciences |
WOS记录号 | WOS:000177045600014 |
出版者 | SCIENCE CHINA PRESS |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/12017 |
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 | Liu, LW,Chen, J,Chen, Y,et al. Variation of Zr/Rb ratios on the Loess Plateau of Central China during the last 130000 years and its implications for winter monsoon[J]. CHINESE SCIENCE BULLETIN,2002,47(15):1298-1302. |
APA | Liu, LW,Chen, J,Chen, Y,Ji, JF,&Lu, HY.(2002).Variation of Zr/Rb ratios on the Loess Plateau of Central China during the last 130000 years and its implications for winter monsoon.CHINESE SCIENCE BULLETIN,47(15),1298-1302. |
MLA | Liu, LW,et al."Variation of Zr/Rb ratios on the Loess Plateau of Central China during the last 130000 years and its implications for winter monsoon".CHINESE SCIENCE BULLETIN 47.15(2002):1298-1302. |
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