The use of self‐potential surveys in geotechnical investigations

Markiewicz, Richard D.; Davenport, G. Clark; Randall, Joan

doi:10.1190/1.1894184

Cited by 10 publications

(5 citation statements)

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“…Integrated geophysical methods have been widely used for mineral exploration (Anderson, 1984; Corwin, 1984; Corwin & Hoover, 1979; Kiberu, 2002; Klein & Sill, 1982; Macnae, 1979; Markiewicz et al, 1984; Marshall & Madden, 1959; Smith, 2002; Stermberg & Oehler, 1990; Sumner, 1976; Towel et al, 1985; Vacquier et al, 1957). In addition to the above methods, magnetic method was widely used for mineral exploration, particularly metallic sulphides and geothermal exploration (Corry, 1981; Ramadan & Sultan, 2004; Yungul, 1950).…”

Section: Introductionmentioning

confidence: 99%

An integrated geophysical approach for gold from Wayand‐Nilambur granulite terrain, Kerala (India)

Babu,

Patel,

Singh

2024

Geological Journal

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The Wayand‐Nilambur granulite terrain in Kerala (India) is well‐known for vein‐type gold mineralization within the quartz veins. Based on the previous geological, petro‐physical and geophysical characteristics of Wayand‐Nilambur gold deposit, the integrated geophysical survey was carried out to delineate the favourable prospecting zones. In the present study, detailed ground geophysical surveys, that is, magnetic, electrical resistivity/chargeability surveys were carried out in an area of 2 km2 in Kattikallu and Kalkulam blocks to delineate the ore deposits in terms of depths and extensions through the structural shear zone, locate the anomalous sources and the geometry of the Au‐rich sulphide zone and its depth continuity in the subsurface. These surveys brought out prominent resistivity and chargeability zones over known magnetite‐quartz veins that are associated with low‐grade sulphide bands at the central part of the Kattikallu block. The prominent potential zone is characterized by strong bipolar magnetic anomalies over the quartz veins. Based on the 2D inversion of resistivity data, the resistivity low zone of order 80–600 Ω m and chargeability of 21–25 mV/V are observed at a depth range of 5–20 m. In Kalkulam block, the magnetic survey has also brought out high intensity anomaly zones over quartz veins, the same quartz veins are mapped by high chargeability of 10–35 mV/V and low resistivity of 185–400 Ω m. The dipole‐dipole configuration produces two parameters, that is, resistivity and chargeability, these methods distinguish the anomalies along the two selected profiles in the study area. An attempt was made for combining the resistivity and chargeability values to identify the anomalous zone boundaries. The results of inversion indicated that the conductive bodies are located at the subsurface, with depths ranging from 5 to 25 m. Based on this integrated geophysical study, we suggested two borehole sites for further geo‐scientific studies in view of mineralization.

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Section: Introductionmentioning

confidence: 99%

An integrated geophysical approach for gold from Wayand‐Nilambur granulite terrain, Kerala (India)

Babu,

Patel,

Singh

2024

Geological Journal

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“…The self-potential (SP) method is based on measurement of naturally occured potential differences generated mainly by electrokinetic, electrochemical, and thermoelectric sources. The self-potential method is employed wide range of applications in Engineering and Geothecnical investigations [1], [2], in the exploration of metallic sulfides [3] and graphite deposits [4], Geothermal explorations [5]- [8], shallow flow of ground water in sinkholes [9]- [11], and cavity detection [12], [13]. There are quantitative methods used to determine the parameters of a polarized structure assuming a model with simple geometry.…”

Section: Introductionmentioning

confidence: 99%

Inverse solution of the SP anomalies of two dimensional sheet like bodies

Sarı¹,

Timur²

2020

Pamukkale J Eng Sci

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Usage of the least squares and inversion methods are commonly applied to the geophysical data analysis. Solution of the theoretical anomalies of inclined sheet like bodies for the self-potential method were compared by writing a Fortran based computer program which is using simple iterative methods with damped least squares (Marquardt-Levenberg) algorithm. As a result of theoretical model studies, model parameters have been reached with very little number of iterations at the small error limits. Applied Marquardt-Levenberg method damping factor has been carried out automatically in the program depending on converging and non-converging conditions. Depth, horizontal length and starting point ( 0 ) parameters of the inclined sheet model were obtained within low error limits compared with the iteration methods for model and real field data. En küçük kareler ve ters çözüm yöntemlerinin kullanımı jeofizik veri analizinde yaygın olarak uygulanmaktadır. Eğilimli tabaka benzeri cisimlerin kuramsal anomalilerinin doğal potansiyel yöntemi için çözümü, basit yinelemeli yöntemler ve sönümlü en küçük kareler (Marquardt-Levenberg) yöntemi kullanılarak Fortran tabanlı bir bilgisayar programı yazılarak karşılaştırılmıştır. Kuramsal model çalışmaları sonucunda, küçük hata limitlerinde çok az sayıda yineleme ile model parametrelere ulaşılmıştır. Uygulanan Marquardt-Levenberg yöntemi sönümleme faktörü programda, yakınsak ve yakınsak olmayan koşullara bağlı olarak otomatik olarak gerçekleştirilmiştir. Eğimli levha modelinin derinlik, yatay uzunluk ve başlangıç noktası ( 0 ) parametreleri, model ve gerçek alan verileri için iterasyon yöntemleri ile karşılaştırıldığında düşük hata sınırları içinde elde edilmiştir.

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“…The self-potential (SP) method has a wide range of applications in Engineering and Geotechnical investigations (Corwin, 1984;Markiewicz et al, 1984), Geothermal exploration (Corwin and Hoover, 1979;Fitterman and Corwin, 1982;Anderson, 1984), cavity detection (Schiavone and Quarto, 1992), and in the exploration for minerals, particularly metallic sulfides (Yüngül, 1950). The self-potential method is based on the measurement of naturally occurring potential differences generated mainly by electrochemical, electrokinetic, and thermoelectric sources.…”

Section: Introductionmentioning

confidence: 99%

A new method for complete quantitative interpretation of self-potential anomalies

El-Araby

2004

Journal of Applied Geophysics

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The use of self‐potential surveys in geotechnical investigations

Cited by 10 publications

References 0 publications

An integrated geophysical approach for gold from Wayand‐Nilambur granulite terrain, Kerala (India)

An integrated geophysical approach for gold from Wayand‐Nilambur granulite terrain, Kerala (India)

Inverse solution of the SP anomalies of two dimensional sheet like bodies

A new method for complete quantitative interpretation of self-potential anomalies

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