The induced-polarization exploration method

Sumner, John S.

doi:10.4095/106046

Cited by 8 publications

(8 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The IP acquisition was always combined with resistivity measurements. The measured physical parameter was called chargeability (mV/V) (which could be seen as an electrical capacitance) [35]. Unlike the electrical resistivity signature, very few materials produced a strong IP response.…”

Section: Electrical Resistivity/induced Potentialmentioning

confidence: 99%

Geophysical Investigation of the Pb–Zn Deposit of Lontzen–Poppelsberg, Belgium

et al. 2018

View full text Add to dashboard Cite

The drillhole information from the Lontzen-Poppelsberg site has demonstrated three orebodies and has allowed the estimation of the extension of the lodes, their dip, and the location at the ground surface. The localisation of the lodes makes them excellent targets for further exploration with geophysics. This deposit is classified as a Mississippi Valley Type (MVT) deposit. It consists mainly of Pb-Zn-Fe sulphides that display contrasting values in resistivity, chargeability, density, and magnetic susceptibility, with regards to the sedimentary host rocks. The dipole-dipole direct current (DC) resistivity and induce polarization (IP) profiles have been collected and inverted to successfully delineate the Pb-Zn mineralization and the geological structures. Short-spacing EM34 electromagnetic conductivity data were collected mainly on the top of Poppelsberg East lode and have revealed a conductive body matching with the geologically modelled mineralization. Gravity profiles have been carried out perpendicularly to the lode orientation; they show a strong structural anomaly. High resolution ground magnetic data were collected over the study area, but they showed no anomaly over the ore deposits. The geophysical inversion results are complementary to the model based on drill information, and allow us to refine the delineation of the mineralization. The identification of the geophysical signatures of this deposit permits targeting new possible mineralization in the area.

show abstract

Section: Electrical Resistivity/induced Potentialmentioning

confidence: 99%

Geophysical Investigation of the Pb–Zn Deposit of Lontzen–Poppelsberg, Belgium

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Induced polarization is a phenomenon of electric current stimulation observed by a voltage signal in the subsurface materials (Sumner, 1976). This method consists in using an electrodic transmission device for injecting a pulsed, periodic electric current intro the subsurface, the response is obtained via a receiver circuit consisting of non-polarizable electrodes.…”

Section: Geophysical Methodsmentioning

confidence: 99%

Geological and geophysical data integration for delimitation of mineralized areas in a supergene manganese deposits

Moreira

Borges

Vieira

et al. 2014

Geofísica Internacional

View full text Add to dashboard Cite

Los métodos geofísicos constituyen una herramienta ampliamente utilizada en exploración mineral. Este trabajo presenta y discute los resultados de estudios geológicos y geofísicos desarrollados en un yacimiento de manganeso de origen supergénico, localizado en la región sudeste de Brasil. La zona mineralizada descrita en levantamientos geológicos fue caracterizada por bajos valores de resistividad (20Ω.m) y altos valores de cargabilidad (30ms), en un patrón similar al descrito en diversos trabajos en depósitos minerales de óxidos y sulfuros en rocas. Modelos geofísicos pseudo-3D permita la generación de mapas para diversas profundidades. Las áreas de alta cargabilidad y baja resistividad definen un patrón de mineralización gonditica con altos niveles de Mn. Áreas considerables con elevados valores de cargabilidad y baja resistividad probablemente resulten de la acumulación de hidróxido de manganeso y hierro, originados del intemperismo en cuerpos de mineral gonditico, disolución, percolación y precipitación.

show abstract

“…Measuring the IP effect or chargeability in the time domain involves the initial injection of an electric current for a certain period of time, followed by a period of time where the current is turned off, and the decay of the electric signal is measured. The apparent chargeability (mV/V or ms) is then calculated in order to determine the polarization characteristics of the ground through analysis of the attenuating voltage over a specified time interval (Chouteau, 2006;Geotomo, 2018;Marescot, 2008;Sumner, 2012). IP and ERT are commonly used in geological and mining prospecting to indicate the presence of metal sulphides, metal oxides, clays and other old buried mine sites in the ground (Bharti et al, 2016;Bharti et al, 2019;Claude et al, 2014;Das et al, 2017;Gündoğdu et al, 2022;Horo et al, 2020;Kayode et al, 2022;Moreira et al, 2019;Shirazi et al, 2022;Silva et al, 2022;Singh et al, 2019;Zaid et al, 2022).…”

Section: Ert and Ip Tomographymentioning

confidence: 99%

Combined analysis of resistivity and induced polarization tomography for 3D modelling and preliminary volume estimation of the possible gold mineralization zones in the Simi locality, Adamawa, Cameroon

Moustapha

Yem

Meying

et al. 2023

Geophysical Prospecting

View full text Add to dashboard Cite

The present study attempts to combine direct current and induced polarization methods for 3D geological modelling and preliminary volume estimation of gold mineralization targets in the Simi locality, Adamawa, Cameroon. To begin, resistivity and chargeability data were collected along seven profiles oriented in N150E using the electrical tomography technique. A geological investigation was also carried out and allowed in addition to the geological formations to highlight the existence of gold mineralization in the study area. The interpretation of the inversion results was done by taking into consideration the geological field data and the existing resistivity charts. The 3D distribution of the interpreted sections allowed us to make a horizontal correlation between the different sections and to elaborate the 3D geological model of the study area by using the deterministic inverse distance method. The estimated model indicates a volume of 621,130.625 m 3 of the possible gold complex. The gold complex was then divided into two mineralization domains based on chargeability ranges (mV/V): A first domain is associated with a major mineralization zone (39-60 mV/V) with a volume of 10,842 m 3 , and a second domain is associated with secondary mineralization zone (18-39 mV/V) with a volume of 610,288 m 3 . This model allows to compartmentalize the gold complex and can be used as a base model for the gold investigation in the study area.

show abstract

The induced-polarization exploration method

Cited by 8 publications

References 0 publications

Geophysical Investigation of the Pb–Zn Deposit of Lontzen–Poppelsberg, Belgium

Geophysical Investigation of the Pb–Zn Deposit of Lontzen–Poppelsberg, Belgium

Geological and geophysical data integration for delimitation of mineralized areas in a supergene manganese deposits

Combined analysis of resistivity and induced polarization tomography for 3D modelling and preliminary volume estimation of the possible gold mineralization zones in the Simi locality, Adamawa, Cameroon

Contact Info

Product

Resources

About