Enhancing weak magnetic fabrics using field-impressed anisotropy: application to the Chinese loess
文献类型：期刊论文
| 作者 | Liu, QS; Yu, YJ; Deng, CL; Pan, YX; Zhu, RX |
| 刊名 | GEOPHYSICAL JOURNAL INTERNATIONAL
 |
| 出版日期 | 2005-08-01 |
| 卷号 | 162期号:2页码:381-389 |
| 关键词 | Chinese Loess Field-impressed Ams Grain Size Magnetic Fabric Pedogenesis |
| ISSN号 | 0956-540X |
| DOI | 10.1111/j.1365-246X.2005.02660.x |
| 文献子类 | Article |
| 英文摘要 | The anisotropy of the low-field magnetic susceptibility (AMS), alternating-field-treated AMS (AF-AMS), and anisotropy of anhysteretic remanent magnetization (AARM) have been systematically examined for a sandwich sequence of loess/palaeosols crossing the upper loess unit L2 (Marine Oxygen Isotope Stage 6, MIS6) to the last interglacial maximum (palaeosol unit S1S3, MIS5e) from the Yuanbao section, northwestern China. Results show that a weak, but detectable, magnetic lineation is controlled by coarse-grained aeolian Fe3O4 (magnetite). Because the long axes of the coarse-grained magnetites are statistically parallel to the palaeowind directions, the declination of the maximum susceptibility principal axis of AMS can be used as an indicator of palaeowind direction. In contrast, fine-grained pedogenic magnetic particles are responsible for the magnetic foliation. We found that AF-AMS can indicate the domain state of the magnetic particles, which is consistent with Potter & Stephenson's earlier model. We also found that AF demagnetization can significantly alter the AMS. In conclusion, the angular dependence of AF-AMS can enhance the weak AMS fabrics. |
| WOS关键词 | GRAIN-SIZE ; ALASKAN LOESS ; SUSCEPTIBILITY ; ROCKS ; SEDIMENTS ; PARTICLES ; REMANENCE ; SEQUENCES ; SECTIONS ; MINERALS |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000230843800009 |
| 出版者 | OXFORD UNIV PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/65054]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Liu, QS |
| 作者单位 | 1.Univ Minnesota, Inst Rock Magnetism, Minneapolis, MN 55455 USA 2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 3.Univ Calif San Diego, Scripps Inst Oceanog, Geosci Res Div, La Jolla, CA 92093 USA |
| 推荐引用方式 GB/T 7714 | Liu, QS,Yu, YJ,Deng, CL,et al. Enhancing weak magnetic fabrics using field-impressed anisotropy: application to the Chinese loess[J]. GEOPHYSICAL JOURNAL INTERNATIONAL,2005,162(2):381-389. |
| APA | Liu, QS,Yu, YJ,Deng, CL,Pan, YX,&Zhu, RX.(2005).Enhancing weak magnetic fabrics using field-impressed anisotropy: application to the Chinese loess.GEOPHYSICAL JOURNAL INTERNATIONAL,162(2),381-389. |
| MLA | Liu, QS,et al."Enhancing weak magnetic fabrics using field-impressed anisotropy: application to the Chinese loess".GEOPHYSICAL JOURNAL INTERNATIONAL 162.2(2005):381-389. |
入库方式： OAI收割
来源：地质与地球物理研究所
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