地球物理学进展 ›› 2017, Vol. 32 ›› Issue (6): 2281-2294.doi: 10.6038/pg20170601

• 空间与固体地球物理 • 上一篇    下一篇

地壳岩石矿物电导率实验研究进展

陈进宇, 杨晓松   

  1. 中国地震局地质研究所, 地震动力学国家重点实验室, 北京 100029
  • 收稿日期:2017-04-24 修回日期:2017-10-17 出版日期:2017-12-20 发布日期:2017-12-20
  • 通讯作者: 杨晓松,男,1959年生,研究员,主要从事实验岩石物理学研究.(E-mail:xsyang@ies.ac.cn) E-mail:xsyang@ies.ac.cn
  • 作者简介:陈进宇,男,1988年生,北京市人,博士研究生,构造地质学专业,主要从事矿物岩石电学性质的实验研究.(E-mail:cjymails@126.com)
  • 基金资助:

    科技部地震行业科研专项(20150818)和国家自然科学基金(41672197,41372202)共同资助.

Review of experimental studies on electrical conductivity of crustal rocks and minerals

CHEN Jin-yu, YANG Xiao-song   

  1. State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China
  • Received:2017-04-24 Revised:2017-10-17 Online:2017-12-20 Published:2017-12-20

摘要:

矿物和岩石电导率的实验研究一直都是国内外专家学者所关注的重点内容,目前电导率的实验测量主要采用交流阻抗谱的方法.从实验结果来看,地壳矿物和岩石电导率的影响因素主要分为外部环境和内部性质两部分,包括矿物和岩石所受到的温度和压力大小、内部赋存的流体和熔体、岩石颗粒边缘的碳膜、岩石的颗粒大小和面理方向以及矿物晶格赋存的结构水与晶格方向等.结合地球物理探测结果,前人对下地壳高导层成因提出了各自不同的看法,同时电导率的实验数据对于解释地下岩层结构、动力学特征也带来了一定的帮助.通过总结可以发现对于断层带的电导率性质目前仍然知之甚少,在今后的实验研究中则需要重点关注.

Abstract:

The electrical conductivity of minerals and rocks is a research hotspot for the petrophysicists. AC impedance spectroscopy is the primary method applied in electrical conductivity measurement. For the experimental results, the influential factors of the electrical conductivity of minerals and rocks in the crust are divided into two parts:the factors of external environment and the factors of interior properties. These factors contain temperature, pressure, saline fluid, partial melting, grain boundary carbon films, grain size, the direction of foliation, water contents of minerals, orientation-related anisotropy of minerals and so on. Combining with the data of Magnetotelluric (MT), scientists have proposed many conclusions to interpret the presence of highly conductive layers, the structure of stratum and geodynamical features of the earth. Finally, we can find that the electrical conductivity of the fault zones in the upper crust is still unclear so far. In the future, we need to pay more attention to study this area.

中图分类号: