| MAGNETIC SUSCEPTIBILITY OF CHINESE LOESS AS A PALAEOCLIMATIC INDICATOR |
| |
| 作者姓名： | 刘秀铭 F. HELLER 刘东生 许同春 |
| |
| 作者单位： | Institute of Geology，Academia Sinica，Beijing 100029，PRC，Institute of Geophysics，ETH-Honggerberg，CH-8093 Zurich，Switzerland，Institute of Geology，Academia Sinica，Beijing 100029，PRC，Institute of Geophysics，State Seismological Bureau，Beijing 100081，PRC |
| |
| 基金项目： | Project supported by the National Natural Science Foundation of China and by ETH Zurich, Switzerland. |
| |
| 摘 要： | Through the studies on low temperature susceptibility, frequency dependent susceptibility, isothermal remanent magnetization, low temperature magnetization and demagnetization for loess and palaeosols one can easily reveal some significant characters of rock magnetism for the magnetic minerals of ultrafine grain sizes, those are very difficult to identify by general geological methods. It is shown in the present study that both loess and palaeosols cover magnetic grain size from superparamagnetism, single domain to multidomain. Loess samples with relative high peramagnetic minerals are dominantly of thermally stable characteristics while palaeosols have relatively high percentage of superparamagnetic grain (0.01—0.03μm). The relative grain size of magnetite is always finer in palaeosol with higher susceptibility than in loess, indicating that many tiny ferri-ferromagnetic minerals formed during the process of soll formation, which has caused a higher susceptibility in palaeosols than in loess. The cli
|
MAGNETIC SUSCEPTIBILITY OF CHINESE LOESS AS A PALAEOCLIMATIC INDICATOR |
| |
| LIU XIU-MING F. HELLER LIU DONG-SHENG.MAGNETIC SUSCEPTIBILITY OF CHINESE LOESS AS A PALAEOCLIMATIC INDICATOR[J].Science in China(Chemistry),1992(5). |
| |
| Authors: | LIU XIU-MING F HELLER LIU DONG-SHENG |
| |
| Abstract: | |
| |
| Keywords: | Chinese loess magnetic susceptibility Quaternary climate |
| 本文献已被 CNKI 等数据库收录！ |
