Characterization of the Chinese loess-paleosol stratigraphy by whiteness measurement | |
Chen, J; Ji, JF; Balsam, W; Chen, Y; Liu, LW; An, ZS | |
刊名 | PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY |
2002-07-20 | |
卷号 | 183期号:3-4页码:287-297 |
关键词 | whiteness pedogenesis iron oxide minerals paleomonsoon Chinese Loess Plateau |
DOI | 10.1016/S0031-0182(02)00246-8 |
文献子类 | Article |
英文摘要 | Changing color is one of the most striking features of loess-palcosol sequences in central China: the loess is light yellow and the interstratified paleosols are reddish-brown. Until a few years ago, conventional color description of loess sediments was made using a qualitative visual method, the Munsell system. To better understand the character of the color changes and to quantify results. whiteness and magnetic susceptibility were compared from four loess-paleosol sequences. Results show that the two parameters are highly correlated in the four sequences studied. Grain-size analysis and chemical extraction experiments indicate that the concentration and species of fine-grained iron oxides are major factors determining color changes in loess and paleosols. Whiteness and latitude values from the last glacial-interglacial sequence exhibit a linear relationship suggesting that whiteness will be a useful tool for reconstructing past atmospheric circulation, especially the East Asian summer monsoon. Whiteness and magnetic susceptibility in the Luochuan profile over the past 0.9 Myr display a strong correlation indicating that whiteness can be also used to reveal a long climatic history from Chinese loess-paleosol sequences. (C) 2002 Elsevier Science BN. All rights reserved. |
学科主题 | Physical Geography ; Geology ; Paleontology |
WOS关键词 | DIFFUSE-REFLECTANCE SPECTROPHOTOMETRY ; BICARBONATE-DITHIONITE EXTRACTION ; FINE-GRAINED MAGNETITE ; LAST 130,000 YEARS ; PALEOCLIMATIC IMPLICATIONS ; SEDIMENT CORES ; NORTH-ATLANTIC ; TIME-SCALE ; SUSCEPTIBILITY ; PLATEAU |
WOS研究方向 | Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology |
语种 | 英语 |
出版者 | ELSEVIER SCIENCE BV |
WOS记录号 | WOS:000176723500007 |
内容类型 | 期刊论文 |
源URL | [http://ir.ieecas.cn/handle/361006/11938] |
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,Ji, JF,Balsam, W,et al. Characterization of the Chinese loess-paleosol stratigraphy by whiteness measurement[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2002,183(3-4):287-297. |
APA | Chen, J,Ji, JF,Balsam, W,Chen, Y,Liu, LW,&An, ZS.(2002).Characterization of the Chinese loess-paleosol stratigraphy by whiteness measurement.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,183(3-4),287-297. |
MLA | Chen, J,et al."Characterization of the Chinese loess-paleosol stratigraphy by whiteness measurement".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 183.3-4(2002):287-297. |
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