Contrasting behavior of hematite and goethite within paleosol S5 of the Luochuan profile, Chinese Loess Plateau
文献类型：期刊论文
| 作者 | Liu, Qingsong; Bloemendal, Jan; Torrent, Jose; Deng, Chenglong |
| 刊名 | GEOPHYSICAL RESEARCH LETTERS
 |
| 出版日期 | 2006-10-17 |
| 卷号 | 33期号:20 |
| ISSN号 | 0094-8276 |
| DOI | 10.1029/2006GL027172 |
| 文献子类 | Article |
| 英文摘要 | [ 1] The Chinese loess/paleosol sequence provides an excellent record of long-term variations in the East Asian paleomonsoon. For representative loess profiles, paleosol units have enhanced magnetic properties compared to loess units. However, at some depth intervals with special paleoenvironmental conditions, selective depletion of antiferromagnetic ( AFM) minerals ( hematite and goethite) could occur, resulting in complexities in accurately linking variations in magnetic properties to long-term fluctuations in paleoclimate. To resolve this problem, we directly measured the mass concentrations of these AFM minerals using second-order diffuse reflectance spectroscopy ( DRS), and then correlated the DRS results to high-field isothermal remanent magnetization ( HIRM) from paleosol unit S5 at the Luochuan profile, central Chinese Loess Plateau. Our results suggest that a low HIRM anomaly just below the sub-paleosol unit S5S1 is caused by fluctuations specifically in goethite content, while the hematite concentration exhibits a maximum over the same depth interval. This appears to rule out significant loss of hematite to reductive dissolution and further indicates that hematite and goethite may respond differently to changes in the paleoclimate conditions. |
| WOS关键词 | PEDOGENIC MAGNETIC PARTICLES ; GRAIN-SIZE DISTRIBUTION ; LOESS/PALEOSOL SEQUENCE ; FREQUENCY-DEPENDENCE ; VARIABILITY ; CLIMATE ; SUSCEPTIBILITY ; PALEOMONSOON ; SEDIMENTS ; RECORD |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| 出版者 | AMER GEOPHYSICAL UNION |
| WOS记录号 | WOS:000241694100002 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/65894]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Liu, Qingsong |
| 作者单位 | 1.Univ Southampton, Sch Ocean & Earth Sci, Natl Oceanog Ctr, Southampton SO14 3ZH, Hants, England 2.Univ Liverpool, Dept Geog, Liverpool L69 7ZT, Merseyside, England 3.Chinese Acad Sci, Inst Geol & Geophys, Paleomagnetism & Geochronol Lab, SKL LE, Beijing 100029, Peoples R China 4.Univ Cordoba, Dept Ciencias & Recursos Agr & Forestales, E-14071 Cordoba, Spain |
| 推荐引用方式 GB/T 7714 | Liu, Qingsong,Bloemendal, Jan,Torrent, Jose,et al. Contrasting behavior of hematite and goethite within paleosol S5 of the Luochuan profile, Chinese Loess Plateau[J]. GEOPHYSICAL RESEARCH LETTERS,2006,33(20). |
| APA | Liu, Qingsong,Bloemendal, Jan,Torrent, Jose,&Deng, Chenglong.(2006).Contrasting behavior of hematite and goethite within paleosol S5 of the Luochuan profile, Chinese Loess Plateau.GEOPHYSICAL RESEARCH LETTERS,33(20). |
| MLA | Liu, Qingsong,et al."Contrasting behavior of hematite and goethite within paleosol S5 of the Luochuan profile, Chinese Loess Plateau".GEOPHYSICAL RESEARCH LETTERS 33.20(2006). |
入库方式： OAI收割
来源：地质与地球物理研究所
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