Articles | Volume 9, issue 2
Research article
06 Mar 2018
Research article |  | 06 Mar 2018

Effect of chemical composition on the electrical conductivity of gneiss at high temperatures and pressures

Lidong Dai, Wenqing Sun, Heping Li, Haiying Hu, Lei Wu, and Jianjun Jiang

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Cited articles

Arora, B. R., Unsworth, M. J., and Rawat, G.: Deep resistivity structure of the northwest Indian Himalaya and its tectonic implications, Geophys. Res. Lett., 34, L04307,, 2007.
Bagdassarov, N., Golabek, G. J., Solferion, G., and Schmidt, M. W.: Constraints on the Fe-S melt connectivity in mantle silicates from electrical impedance measurements, Phys. Earth Planet. In., 177, 139–146, 2009.
Caldwell, W. B., Klemperer, S. L., Rai, S. S., and Lawrence, J. F.: Partial melt in the upper-middle crust of northwest Himalaya are veiled by Rayleigh wave dispersion, Tectonophysics, 477, 58–65, 2009.
Chen, J. Y., Yang, X. S., and Chen, J. Y.: Experimental studies on the relationship between carbonaceous structure and electrical conductivity of the Longmenshan fault zone, Chinese J. Geophys., 60, 3475–3492, 2017.
Chen, S. B., Guo, X. Z., Yoshino, T., Jin, Z. M., and Li, P.: Dehydration of phengite inferred by electrical conductivity measurements: Implication for the high conductivity anomalies relevant to the subduction zones, Geology, 46, 11–14, 2018.
Short summary
The gneiss conductivities markedly increase with total alkali and calcium ion content. The influence of pressure on gneiss conductivity is weaker than temperature, although conductivity still increases with pressure. The results cannot be used to interpret the HC anomalies in the Dabie–Sulu UHPM belt. However, the conductivity–depth profiles for gneiss may provide an important constraint on the interpretation of field magnetotelluric conductivity results in the regional metamorphic belt.