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Electrical conductivity of a spinel lherzolite and a garnet peridotite to 1550°C: relevance to the effects of partial melting

  • Chapter I: Physico-chemical Aspect Of Magma Generation
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Abstract

Electrical conductivity σ of two ultramafic rocks (a spinel lherzolite and a garnet peridotite) has been investigated to melting temperature at 1 bar under known oxygen fugacity environment. The electrical conductivity of the two rocks is found to increase with degree of partial melting and an ∼ 15% melt fraction is necessary for the electrical conductivity to increase by ∼ 1 order of magnitude. For a given melt fraction electrical conductivity of a spinel lherzolite is lower than that of a garnet peridotite and may be attributed to the differences in the composition of the melts formed.

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Hawaii Institute of Geophysics Contribution No. 919.

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Manghnani, M.H., Rai, C.S. Electrical conductivity of a spinel lherzolite and a garnet peridotite to 1550°C: relevance to the effects of partial melting. Bull Volcanol 41, 328–332 (1978). https://doi.org/10.1007/BF02597367

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