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高温高压下矿物岩石电导率的实验研究数据,不仅是人们了解地球内部物质组成及其演化过程的重要窗口,而且可以为野外大地电磁测深和地磁测深反演提供重要约束。重点介绍了温度、压力、水含量、铁含量、氧逸度、熔融等矿物岩石电导率的影响因素,深入阐述了存在于矿物岩石的4种主要导电机制,即离子、质子、小极化子和大极化子。回顾近年来地壳主要造岩矿物(长石、石英和辉石)的电导率实验研究取得的新成果,讨论了它们的导电机制和地球物理意义,并对其目前存在的问题及尚需进一步展开的工作进行了探讨。
Experimental data on the conductivity of mineral rock under high temperature and high pressure are not only important windows for people to understand the composition and evolution process of the Earth’s interior, but also provide important constraints for field geomagnetic sounding and geomagnetic sounding. The influencing factors of temperature, pressure, water content, iron content, oxygen fugacity, melting and other conductivity of mineral rock are mainly introduced. Four main conductive mechanisms exist in mineral rock, namely ion, proton, small polaron And big polaron. Reviewing the recent achievements in experimental studies on conductivity of crustal major rock-forming minerals (feldspar, quartz and pyroxene), their electrical conduction mechanisms and geophysical significance are discussed, and their existing problems need to be further explored The work was discussed.