Mineral magnetic properties of loess/paleosol couplets of the central loess plateau of China over the last 1.2 Myr
文献类型：期刊论文
| 作者 | Deng, CL; Zhu, RX; Verosub, KL; Singer, MJ; Vidic, NJ |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
 |
| 出版日期 | 2004-01-16 |
| 卷号 | 109期号:B1 |
| 关键词 | Loess Paleosol Mineral Magnetism Pedogenesis Loess Plateau |
| ISSN号 | 2169-9313 |
| DOI | 10.1029/2003JB002532 |
| 文献子类 | Article |
| 英文摘要 | [1] We have conducted a multiparameter investigation of 15 loess-paleosol couplets (S0/L1 to S14/L15) from the Jiaodao section in the central loess plateau of China using environmental magnetic approaches coupled with soil science techniques. The magnetic parameters display systematic variations that seem to be closely related to paleoclimate variations and intensity of pedogenesis. High-temperature susceptibility curves of paleosols show a generally decreasing trend in reversibility from the base of the Lishi Formation to the Holocene black loam, possibly indicating a decrease in weathering intensity. This may reflect a long-term increase in aridity and/or a general long-term cooling trend of the interior of the Asian continent from 1.2 Ma to the present. Several samples display wasp-waisted hysteresis loops. These are most pronounced in moderately enhanced paleosols, less pronounced in the practically unaltered loess, and subdued in the well-developed paleosols, but wasp waistedness reappears in the most developed paleosols. This wasp-waistedness sequence suggests that the composition, concentration, and grain size of magnetic minerals all contribute to the hysteresis behavior of samples from the studied loess-paleosol sequence, but each factor has a different effect at different stages of pedogenesis. |
| WOS关键词 | TEMPERATURE-DEPENDENT SUSCEPTIBILITY ; NW-SE TRANSECT ; PALEOSOL SEQUENCES ; GRAIN-SIZE ; ENVIRONMENTAL MAGNETISM ; MOSSBAUER-SPECTROSCOPY ; HYSTERESIS LOOPS ; RECORD ; DEPOSITS ; SECTION |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000188307800001 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/64742]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Deng, CL |
| 作者单位 | 1.Chinese Acad Sci, Inst Geochem & Geophys, Paleomagnetism Lab, Beijing 100029, Peoples R China 2.Univ Calif Davis, Dept Land Air & Water Resources, Davis, CA 95616 USA 3.Univ Calif Davis, Dept Geol, Davis, CA 95616 USA 4.Univ Ljubljana, Dept Agron, Ljubljana, Slovenia |
| 推荐引用方式 GB/T 7714 | Deng, CL,Zhu, RX,Verosub, KL,et al. Mineral magnetic properties of loess/paleosol couplets of the central loess plateau of China over the last 1.2 Myr[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2004,109(B1). |
| APA | Deng, CL,Zhu, RX,Verosub, KL,Singer, MJ,&Vidic, NJ.(2004).Mineral magnetic properties of loess/paleosol couplets of the central loess plateau of China over the last 1.2 Myr.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,109(B1). |
| MLA | Deng, CL,et al."Mineral magnetic properties of loess/paleosol couplets of the central loess plateau of China over the last 1.2 Myr".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 109.B1(2004). |
入库方式： OAI收割
来源：地质与地球物理研究所
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