Geoelectric Investigation for Groundwater Exploration in Yaound&amp;#233; Area, Cameroon

Assatsé., Teikeu William; Nouck, Njandjock Philippe; Ndougsa‐Mbarga, Théophile; Charles, Tabod Tabod

doi:10.4236/ijg.2012.33064

Cited by 22 publications

(11 citation statements)

References 5 publications

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“…Ground geophysical surveys of IP/chargeability and resistivity are routinely used for a wide range of applications, ranging from environmental pollution studies (e.g. oil spills), lithology variation, hydrology in locating aquifers [17,18] to mineral exploration. However the effectiveness of these geophysical techniques in exploration are enhanced when integrated with geochemical and geological data [19] which define the target of investigation.…”

Section: Discussionmentioning

confidence: 99%

Application of Electrical Resistivity and Chargeability Data on a GIS Platform in Delineating Auriferous Structures in a Deeply Weathered Lateritic Terrain, Eastern Cameroon

Fon¹,

Bih²,

Suh³

2012

IJG

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Exploration for primary gold in tropical settings is often problematic because of deep weathering and the development of a thick soil cover. In this paper we present the results of both chargeability and resistivity surveys carried out over the Belikombone hill gold prospect (14?00' - 14?25'E, 5?25' - 6?00'N) in the Betare Oya area (eastern Cameroon), where previous soil sampling had identified gold anomalies. The geophysical data were obtained using Syscal Junior 48 resistivity meter and the Schlumberger configuration array for both the vertical electrical soundings (VES) and horizontal profiling. These data were further built into a GIS framework and the continuity of favourable gold-bearing structures at depth modeled using WINSEV, RED2INV and SURFER extensions softwares. IP (Induced Polarization)-chargeability and resistivity data combined, have identified irregular anomalous zones trending NE-SW. This trend is consistent with the attitude of most auriferous quartz veins exposed in artisanal pits and parallel to the regional shear zone system and foliations. The high resistivity anomalies correspond to quartz veins while the relatively high IP anomalies correspond to low sulphide ± gold concentrations in the quartz veins. Modeling IP-chargeability and resistivity data prepared as contours and 3D maps, culminated to the development of an inferred, irregular and discontinuous mineralized body at depths of up to 95 m. The size and shape of this mineralized body can only later be tested by drilling to ascertain the resource

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Section: Discussionmentioning

confidence: 99%

Application of Electrical Resistivity and Chargeability Data on a GIS Platform in Delineating Auriferous Structures in a Deeply Weathered Lateritic Terrain, Eastern Cameroon

Fon¹,

Bih²,

Suh³

2012

IJG

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“…The progressive population growth has led to severe shortage of potable water for the area. This poses as a great challenge to both the citizens and the Government [1]. Thus, the inadequate supply of potable water in the area has been a chronic problem.…”

Section: Introductionmentioning

confidence: 99%

Groundwater Investigation Using Geoelectrical Method: A Case Study of the Western Region of Cameroon

Keleko¹,

Tadjou²,

Kamguia³

et al. 2013

JWARP

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A geoelectrical survey using the electrical resistivity method was carried out in some villages in the western region of Cameroon to investigate the sub-surface layers and evaluate the characteristics of aquifers. The direct current electrical resistivity method was utilized for the present study. Applying the Schlumberger array, a total of twenty four (24) Vertical Electrical Soundings (VES) were conducted. Quantitative and qualitative interpretations of data were carried out to determine the nature and thickness of the aquifer zone combined with existing litho-logs aided correlation of geoelectric sections to litho-logs. Four to five geoelectric layers were delineated from the survey area. The first layer which is the topsoil has resistivity values ranging from 6 -949 Ωm and the thickness is between 0.2 -4.2 m. The second layer which is made up of clay and laterite has resistivity values ranging between 9 -1862 Ωm and thickness range from 1.0 -16.4 m. The third and fourth geoelectric layers are made up of clay and granite/basalts with thickness varying from 2.2 -39.5 m which corresponds to an aquifer horizon. Resistivity values of the aquifer ranges from 10 to 70,506 Ωm. The resistivity map drawn from these measurements shows the presence of a low resistivity zone which indicates the reflection in the direction of ground water from northeast to southwest with the recharge concentrated to the south of the study area. This study has revealed for this area, an average depth of the aquifer of 32 m with the average thickness of the aquifer being 22 m. The geoelectric sections of some VES stations demarcated corroborate very well with the geological description of the area.

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“…The inventory of the shallow-dug wells revealed a depth range of 2.40-14.10 m with a mean value of 6.65 ± 2.47 m and a static water level of 1.55-13.12 m with a mean value of 5.89 ± 2.35 m. The occurrence of groundwater is controlled by a number of factors such as type of parent rock, depth, extent and pattern of weathering, the sand/clay ratio and the degree of fracturing, fissuring and jointing [18,19].…”

Section: Field Measurements and Hydrochemical Analysesmentioning

confidence: 99%

Soil corrosivity and aquifer protective capacity of overburden units in Ado-Ekiti, southwestern Nigeria

Oyedele

Olayanju

Talabi

et al. 2018

Materials and Geoenvironment

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Vertical electrical sounding, well inventory and physicochemical analysis were conducted to evaluate soil corrosivity and aquifer protective capacity of overburden units in the basement complex terrain of Ado-Ekiti, southwestern Nigeria. The topsoil is composed of slightly corrosive materials at the eastern, southern and northeastern flanks and the central portion with resistivity values ranging from 60 to 180 Ωm. Moderately corrosive/slightly corrosive materials (with resistivity values of 10 < ρ < 60 Ωm) constitute the second layer around the eastern, southern and north-eastern flanks. Pockets of areas in the northwestern, southeastern, eastern and central parts of the metropolis are practically non-corrosive with resistivity values in excess of 200 Ωm. Zones of good, moderate, weak and poor overburden protective capacity were delineated, with longitudinal conductance (S) values of 0.7 < S < 4.9, 0.2 < S < 0.69, 0.1 < S < 0.19 and S < 0.1 mhos, respectively. On a regional consideration, 23.31%, 18.80% and 57.9% of the study area is characterised by overburden materials of poor, weak and moderate protective capacity, respectively. Only 6.02% of the area indicates good overburden protective capacity.

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Geoelectric Investigation for Groundwater Exploration in Yaoundé Area, Cameroon

Cited by 22 publications

References 5 publications

Application of Electrical Resistivity and Chargeability Data on a GIS Platform in Delineating Auriferous Structures in a Deeply Weathered Lateritic Terrain, Eastern Cameroon

Application of Electrical Resistivity and Chargeability Data on a GIS Platform in Delineating Auriferous Structures in a Deeply Weathered Lateritic Terrain, Eastern Cameroon

Groundwater Investigation Using Geoelectrical Method: A Case Study of the Western Region of Cameroon

Soil corrosivity and aquifer protective capacity of overburden units in Ado-Ekiti, southwestern Nigeria

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