Induced polarization response of porous media with metallic particles — Part 2: Comparison with a broad database of experimental data

Revil, A.; Aal, Gamal Z. Abdel; Atekwana, Estella A.; Mao, Deqiang; Florsch, Nicolás

doi:10.1190/geo2014-0578.1

Cited by 86 publications

(94 citation statements)

References 25 publications

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“…5e). The relationship among resistivity, chargeability, and sulfide mineral content is similar to that recently described for disseminated sulfide samples by Revil et al (2015b). The disseminated sulfide-like characteristics of resistivity and IP properties in the present study are consistent with the visual core description of the drillcore samples including minor amounts of massive sulfide rock.…”

Section: Discussionsupporting

confidence: 78%

Depth profiles of resistivity and spectral IP for active modern submarine hydrothermal deposits: a case study from the Iheya North Knoll and the Iheya Minor Ridge in Okinawa Trough, Japan

Komori

Yoshio

Tanikawa

et al. 2017

Earth Planets Space

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Submarine hydrothermal deposits are one of the promising seafloor mineral resources, because they can store a large amount of metallic minerals as sulfides. The present study focuses on the electrical properties of active modern submarine hydrothermal deposits, in order to provide constraints on the interpretation of electrical structures obtained from marine electromagnetic surveys. Measurements of resistivity and spectral induced polarization (IP) were made using drillcore samples taken from the Iheya North Knoll and the Iheya Minor Ridge in Okinawa Trough, Japan. These hydrothermal sediments are dominantly composed of disseminated sulfides, with minor amounts of massive sulfide rocks. The depth profiles of resistivity and spectral IP properties were successfully revealed to correspond well to layer-by-layer lithological features. Comparison with other physical properties and occurrence of constituent minerals showed that resistivity is essentially sensitive to the connectivity of interstitial fluids, rather than by sulfide and clay content. This suggests that, in active modern submarine hydrothermal systems, not only typical massive sulfide rocks but also high-temperature hydrothermal fluids could be imaged as low-resistivity anomalies in seabed surveys. The spectral IP signature was shown to be sensitive to the presence or absence of sulfide minerals, and total chargeability is positively correlated with sulfide mineral abundance. In addition, the massive sulfide rock exhibits the distinctive IP feature that the phase steadily increases with a decrease of frequency. These results show the effective usage of IP for developing and improving marine IP exploration techniques.

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Section: Discussionsupporting

confidence: 78%

Depth profiles of resistivity and spectral IP for active modern submarine hydrothermal deposits: a case study from the Iheya North Knoll and the Iheya Minor Ridge in Okinawa Trough, Japan

Komori

Yoshio

Tanikawa

et al. 2017

Earth Planets Space

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“…This lower Cole-Cole exponent may imply that possibly of some dissolution of the sample in the laboratory experiment leading to a smaller value of the Cole-Cole exponent. The chargeability calculated from the low-and high-frequency conductivities values is M ¼ 0.69 in excellent agreement with the model discussed in Revil et al (2015b) (see Revil et al [2015b], their Figure 5). …”

Section: Resultssupporting

confidence: 71%

“…The pyrite generates a high-phase response with 310 mrad, which is the phase expected from the volume ratio of pyrite (see Revil et al [2015b], their Figure 19). The phase reaches its peak at approximately 5 Hz.…”

Section: Resultsmentioning

confidence: 97%

“…In Revil et al (2015aRevil et al ( , 2015b, we have shown that the spectral induced polarization response of disseminated pyrite in a porous material can be expressed in the form of a Cole-Cole model for complex conductivity…”

Section: Time-domain Induced Polarizationmentioning

confidence: 99%

“…In Revil et al (2015a), we derive a new formulation of the induced polarization problem of disseminated particles in a porous material with or without polarization of the background material. This formulation is tested by Revil et al (2015b) against a broad database of experimental data from the literature and new laboratory experiments. We show that under the influence of a primary current density, p-and n-charge carriers of the semiconductor accumulate on the opposite sides of the metallic particle generating gradients in the chemical potential of these charge carriers.…”

Section: Introductionmentioning

confidence: 99%

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Induced polarization response of porous media with metallic particles — Part 3: A new approach to time-domain induced polarization tomography

Mao

Revil

2016

GEOPHYSICS

Self Cite

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The secondary voltage associated with time-domain induced polarization data of disseminated metallic particles (such as pyrite and magnetite) in a porous material can be treated as a transient self-potential problem. This self-potential field is associated with the generation of a secondary-source current density. This source current density is proportional to the gradient of the chemical potentials of the p-and n-charge carriers in the metallic particles or ionic charge carriers in the pore water including in the electrical double layer coating the surface of the metallic grains. This new way to treat the secondary voltages offers two advantages with respect to the classical approach. The first is a gain in terms of acquisition time. Indeed, the target can be illuminated with a few primary current sources, all the other electrodes being used simultaneously to record the secondary voltage distribution. The second advantage is with respect to the inversion of the obtained data. Indeed, the secondary (source) current is linearly related to the secondary voltage. Therefore, the inverse problem of inverting the secondary voltages is linear with respect to the source current density, and the inversion can be done in a single iteration. Several iterations are, however, required to compact the source current density distribution, still obtaining a tomogram much faster than inverting the apparent chargeability data using the classical Gauss-Newton approach. We have performed a sandbox experiment with pyrite grains locally mixed to sand at a specific location in the sandbox to demonstrate these new concepts. A method initially developed for self-potential tomography is applied to the inversion of the secondary voltages in terms of source current distribution. The final result compares favorably with the classical inversion of the time-domain induced polarization data in terms of chargeability, but it is much faster to perform.

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Complex conductivity of soils

Revil

Coperey

Shao

et al. 2017

Water Resources Research

130

191

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The complex conductivity of soils remains poorly known despite the growing importance of this method in hydrogeophysics. In order to fill this gap of knowledge, we investigate the complex conductivity of 71 soils samples (including four peat samples) and one clean sand in the frequency range 0.1 Hz to 45 kHz. The soil samples are saturated with six different NaCl brines with conductivities (0.031, 0.53, 1.15, 5.7, 14.7, and 22 S m−1, NaCl, 25°C) in order to determine their intrinsic formation factor and surface conductivity. This data set is used to test the predictions of the dynamic Stern polarization model of porous media in terms of relationship between the quadrature conductivity and the surface conductivity. We also investigate the relationship between the normalized chargeability (the difference of in‐phase conductivity between two frequencies) and the quadrature conductivity at the geometric mean frequency. This data set confirms the relationships between the surface conductivity, the quadrature conductivity, and the normalized chargeability. The normalized chargeability depends linearly on the cation exchange capacity and specific surface area while the chargeability shows no dependence on these parameters. These new data and the dynamic Stern layer polarization model are observed to be mutually consistent. Traditionally, in hydrogeophysics, surface conductivity is neglected in the analysis of resistivity data. The relationships we have developed can be used in field conditions to avoid neglecting surface conductivity in the interpretation of DC resistivity tomograms. We also investigate the effects of temperature and saturation and, here again, the dynamic Stern layer predictions and the experimental observations are mutually consistent.

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Induced polarization response of porous media with metallic particles — Part 2: Comparison with a broad database of experimental data

Cited by 86 publications

References 25 publications

Depth profiles of resistivity and spectral IP for active modern submarine hydrothermal deposits: a case study from the Iheya North Knoll and the Iheya Minor Ridge in Okinawa Trough, Japan

Depth profiles of resistivity and spectral IP for active modern submarine hydrothermal deposits: a case study from the Iheya North Knoll and the Iheya Minor Ridge in Okinawa Trough, Japan

Induced polarization response of porous media with metallic particles — Part 3: A new approach to time-domain induced polarization tomography

Complex conductivity of soils

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