TY - GEN

T1 - Effect of mineralogy on Spectral Induced Polarization of sediments: A conceptual model of membrane polarization

AU - Titov, K.

AU - Chuprinko, D.

PY - 2016/6/6

Y1 - 2016/6/6

N2 - We discuss a membrane polarization effect produced by the difference in mineral composition of walls of two sequential pores, which can occur, for example when the first pore is encased in calcite and the second – in alumosilicate. We assume that the zeta potential values of these minerals differ from each other. This leads to a difference in the cation and anion transference numbers (even if the above two pores are of the same radius) and, therefore, to a membrane polarization when an electrical field is applied. We model this effect for two pores filled with water of low salinity (1 and 10 Mol.m3), and for three pore radius values (10-6, 10-7 and 10-8 m). We assume that one pore is “passive,” i.e., the interface potential is zero, and the other pore is “active”, with zeta potential of -75 mV. We calculate the maximum values of phase shift and the corresponding values of peak frequency as a function of lengths of the active and passive pores. We show that the maximum phase shift corresponds to a case where t

AB - We discuss a membrane polarization effect produced by the difference in mineral composition of walls of two sequential pores, which can occur, for example when the first pore is encased in calcite and the second – in alumosilicate. We assume that the zeta potential values of these minerals differ from each other. This leads to a difference in the cation and anion transference numbers (even if the above two pores are of the same radius) and, therefore, to a membrane polarization when an electrical field is applied. We model this effect for two pores filled with water of low salinity (1 and 10 Mol.m3), and for three pore radius values (10-6, 10-7 and 10-8 m). We assume that one pore is “passive,” i.e., the interface potential is zero, and the other pore is “active”, with zeta potential of -75 mV. We calculate the maximum values of phase shift and the corresponding values of peak frequency as a function of lengths of the active and passive pores. We show that the maximum phase shift corresponds to a case where t

KW - Key words: Spectral Induced Polarization

KW - MembranePolarization

KW - Zeta Potential

KW - Mineral composition.

M3 - Conference contribution

BT - 4th International workshop on induced polarization, IP2016 – 6-8 June, Aarhus, Denmark

ER -