Spectral induced polarization of heterogeneous non-consolidated clays

SUMMARY Clays are ubiquitously located in the Earth’s near surface and have a high impact on subsurface permeability. Most geo-electrical characterizations of clays do not take into account heterogeneous nature clay geological media. We want to better understand influence heterogeneities signature, thus we collected data set spectral induced polarization (SIP) artificial non-consolidated samples. The samples made illite red montmorillonite parallel perpendicular disposition (with respect applied electric field). Another sample is homogeneous mixture composed same volumetric fraction montmorillonite. For all samples, dominated by montmorillonite, given shape spectra (presence or lack peak at particular frequency). compared experimental with classical mixing laws complex conductance network models test how predict SIP signature such mixtures when two components known. real conductivity predicted laws, but peaks frequencies) best models. This study step forward towards characterization systems using SIP.