Articles | Volume 6, issue 3
https://doi.org/10.5194/se-6-1037-2015
https://doi.org/10.5194/se-6-1037-2015
Research article
 | 
02 Sep 2015
Research article |  | 02 Sep 2015

Experimental study on the electrical conductivity of quartz andesite at high temperature and high pressure: evidence of grain boundary transport

K. S. Hui, H. Zhang, H. P. Li, L. D. Dai, H. Y. Hu, J. J. Jiang, and W. Q. Sun

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Cited articles

Dai, L. D. and Karato, S.: Influence of FeO and H on the electrical conductivity of olivine, Phys. Earth Planet. In., 237, 73–79, 2014a.
Dai, L. D. and Karato, S.: High and highly anisotropic electrical conductivity of the asthenosphere due to hydrogen diffusion in olivine, Earth Planet Sci. Lett., 408, 79–86, 2014b.
Dai, L. D., Li, H. P., Hu, H. Y., and Shan, S. M.: Experimental study of grain boundary electrical conductivities of dry synthetic peridotite under high-temperature, high-pressure, and different oxygen fugacity conditions, J. Geophys. Res., 113, B12211, https://doi.org/10.1029/2008jb005820, 2008.
Dai, L. D., Li, H. P., Hu, H. Y., Shan, S. M., Jiang, J. J., and Hui, K. S.: The effect of chemical composition and oxygen fugacity on the electrical conductivity of dry and hydrous garnet at high temperatures and pressures, Contrib. Mineral. Petrol., 163, 689–700, 2012.
Dai, L., Li, H. P., Hu, H. Y., Jiang, J. J., Hui, K. S., and Shan, S. M.: Electrical conductivity of Alm82Py15Grs3 almandine-rich garnet determined by impedance spectroscopy at high temperatures and high pressures, Tectonophysics, 608, 1086–1093, 2013.
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Short summary
Similar to temperature and pressure, grain boundary greatly affects the electrical properties of rocks. However, the relation between the total conductivity, grain boundary and grain interior conductivity for andesite remains unclear till now. In this study, the grain boundary electrical conductivity of quartz andesite was measured, and the conduction mechanism was discussed.