Abstract

We have performed dielectric measurements on natural and artificial rock samples in the range 5 Hz–13 MHz. For the lowest frequencies, we get very high permittivities, which do not depend significantly on sample thickness. We attribute these permittivities to diffusion effects at the solid-liquid interface. Calculations were made using the so called Grain Consolidation Model, which was generalized to include interface effects. The model gave reasonable agreement with experiments.

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