The experimental studies on electrical conductivities and P-wave velocities of anorthosite at high pressure and high temperature

	The experimental studies on electrical conductivities and P-wave velocities of anorthosite at high pressure and high temperature
	ZHOU Wen-ge; BAI Li-ping; DU Jian-guo; LIU Wei
	2002
发表期刊	地震学报：英文版
期号	6 页码:667-676
合作性质	其它
摘要	Results of P-wave velocity (vP) and electrical conductivity measurements on anorthosite are presented from room temperature to 880 (C at 1.0 GPa using ultrasonic transmission technique and impedance spectra technique respectively. The experiments show that the P-wave velocities in anorthosite decrease markedly above 680 (C following the dehydration of hydrous minerals in the rock, and the complex impedances collected from 12 Hz to 105 Hz only indicate the grain interior conduction mechanism at 1.0 GPa, from 410 (C to 750 (C. Because the fluids in the rock have not formed an interconnected network, the dehydration will not pronouncedly enhance the electrical conductivity and change the electrical conduction mechanism. It is concluded that the formation and evolution of the low-velocity zones and high-conductivity layers in the crust may have no correlations, and the dehydration can result in the formation of the low-velocity zones, but cannot simultaneously result in the high-conductivity layers.
关键词	Anorthosite P-wave Velocity Electrical Conductivity High Pressure And High Temperature
学科领域	地球深部物质与流体作用地球化学
资助者	National Science Foundation of China (No. 10032040 and No. 49874013) and Joint Earthquake Science Foundation of China (No. 101119).
语种	英语
文献类型	期刊论文
条目标识符	http://ir.gyig.ac.cn/handle/352002/4060
专题	地球内部物质高温高压实验室_地球内部物质高温高压实验室_期刊论文地球深部物质与流体作用地球化学研究室
推荐引用方式 GB/T 7714	ZHOU Wen-ge,BAI Li-ping,DU Jian-guo,et al. The experimental studies on electrical conductivities and P-wave velocities of anorthosite at high pressure and high temperature[J]. 地震学报：英文版,2002(6):667-676.
APA	ZHOU Wen-ge,BAI Li-ping,DU Jian-guo,&LIU Wei.(2002).The experimental studies on electrical conductivities and P-wave velocities of anorthosite at high pressure and high temperature.地震学报：英文版(6),667-676.
MLA	ZHOU Wen-ge,et al."The experimental studies on electrical conductivities and P-wave velocities of anorthosite at high pressure and high temperature".地震学报：英文版 .6(2002):667-676.