- 责任者：Meng Xiaohong (Key Laboratory of Geo-detection (China University of Geosciences ; Beijing) ; Ministry of Education ; Beijing 100083 ; China) ; Yu Qinfan
- 刊名：Journal of China University of Geosciences
- 出版年：2007
- 卷期：18(4)
- 关键词：paleomagnetism ; rock magnetism ; eclogite ; ultrahigh pressure metamorphic belt
- 页码：p.
- 图表：4 illus., 1 table, 23 refs.
- issnNo：ISSN1002-0705
- isbnNo：CN42-1279/P
A preliminary study of paleomagnetism and rock magnetism has been done on 55 eclogite samples collected from the Chinese Continental Scientific Drilling (CCSD) site at the Maobei area, Donghai County, Jiangsu Province. Also the isothermal remanence, hysteresis loop, magnetic fabric, thermal susceptibility were measured, and analyses were made by electron-probe and scanning electric microscope on some samples synchronously. The result indicates that there are two groups of stable remanence, the normal and reversed magnetization. The remanence orientations are: D=94.3o, I=-29.1o and D=273.7o, I=15.4o, respectively. The magnetization intensity and the density of the samples which carry the normal magnetization are very different from those bearing reversed magnetization. The magnetic anisotropy is weak, and the minimum axis is hardly determined. The isothermal remanence and the hysteresis loop show that the magnetic carriers of the eclogite are likely SD (single domain) and PSD (pseudo-single domain) magnetite.