高温高压下壳幔含水矿物电导率实验研究

发布时间：2018-06-27 18:05

本文选题：电导率 + 高温高压实验　；参考：《中国科学:地球科学》2016年03期

【摘要】：含水矿物是地壳、地幔,尤其是俯冲带内的重要矿物.高温高压下壳幔含水矿物电导率实验研究是一个相对较新的研究方向.随着实验技术的不断进步,很多高压相含水硅酸岩矿物的电导率测定工作得以开展,在有效控制温度、压强和氧逸度等条件下,含水矿物的电导率实验数据可以对地球内部水的分布提供制约.本文介绍了已有的蛇纹石、滑石、水镁石、phase A、super hydrous phase B、phase D含水矿物在高温高压下的电导率实验研究,对各含水矿物电导率数据的有效性进行了分析,并重点介绍了电导率测试含水矿物脱水对全岩电导率的影响以及压强对含水矿物电导率的影响.在已有数据的基础上,对含水矿物的导电机制以及俯冲带的电结构进行了探讨.最后对今后的研究前景及潜在的研究领域进行了展望.
[Abstract]:Water-bearing minerals are important minerals in the crust and mantle, especially in subduction zones. Experimental study on conductivity of water-bearing minerals in crust and mantle under high temperature and pressure is a relatively new research direction. With the development of experimental technology, the determination of electrical conductivity of many high-pressure water-bearing silicate minerals has been carried out. Under the conditions of effectively controlling temperature, pressure and oxygen fugacity, The experimental data of conductivity of water-bearing minerals can restrict the distribution of water in the earth's interior. In this paper, the electrical conductivity of phase A super hydrous phase Bu phase D minerals of serpentine, talc and brucite at high temperature and high pressure are studied. The validity of conductivity data of these minerals is analyzed. The effect of dehydration of water-bearing minerals on the conductivity of the whole rock and the effect of pressure on the conductivity of water-bearing minerals are introduced emphatically. Based on the available data, the electrical conduction mechanism of water-bearing minerals and the electrical structure of subduction zones are discussed. Finally, the future research prospect and potential research field are prospected.
【作者单位】：中国地质大学地质过程与矿产资源国家重点实验室;
【基金】：国家自然科学基金项目(批准号:41590623,41472040) 中央高校基本科研业务费专项项目(编号:CUGL150801) 地质过程与矿产资源国家重点实验室自主研究课题(编号:MSFGPMR201408)资助
【分类号】：P542.5

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