The Electrical Conductivity of Amphibole-Bearing Gneiss at High Temperature and High Pressure
详细信息
- 责任者：Yu Yingjie (Key Laboratory of Computational Geodynamics ; Graduate University ; Chinese Academy of Sciences ; Beijing 100049 ; China） ; Wang Duojun
- 刊名：Chinese Journal of Geophysics
- 出版年：2011
- 卷期：54（3）
- 关键词：角闪片麻岩 ; hornblende gneiss ; 高温高压实验 ; high temperature-high pressure experiment ; 电导率 ; electrical conductivity
- 页码：p.764-770
- 图表：7 illus., 23 refs.
- 分类号：0802
- 出版序号：20120195
- issnNo：ISSN0001-5733
- isbnNo：CN11-2074/P
摘要
In this paper, the authors conducted electrical impedance spectra measurements parallel and perpendicular to foliation in dry gneiss at 1.0 GPa and 343~962 K within the frequency range of 0.1~106 Hz using a 1 260 impedance analyzer. The high temperature and pressure experimental results indicate that impedance spectrum strongly depends upon the variation of frequency and temperature. A comparison between experimental results with data derived from electromagnetic soundings indicates that the dehydration of amphibole-bearing gneiss may provide an alternative explanation for high-conductivity layer.