Abstract
To achieve the current study, geoelectrical surveys along six (06) profiles of 4 km long in a 100 m × 200 m grid defined according to the triangulation principle in the Tindikala-Boutou (Eastern-Cameroon) area along the Kadey River have been made through electrical sounding and profiling following Schlumberger array. The instrument is the resistive meter Syscal Junior 48 (IRIS Instrument). The data have been processed and modelled with Res2Dinv and Winsev softwares, and then interpolated with Surfer software. Investigation method used is the Direct Current (DC) method. Interpretations and analyses of results from the investigation method highlight weak zones or conductive discontinuities. The latter has been identified as shear zones within granitic structures of the Precambrian basement, according to the geologic and tectonic background of the area. The structural trend of these shear zones is E-W approximately. The mineralization characterized by conductive zones proves the presence of clay minerals disseminated in weathered quartz vein, which cross the shear zones. The intense activities of gold washers encountered in the studied area are able to attest the presence of clay minerals concentrations.
Highlights
The reliability of any geophysical exploration result is supported by the geological background assessment of a given area, no matter its purpose
We suggest that conductive layers may represent target zones of clay minerals concentrations [28]-[30]
Interpretations made from different models are able to highlight weakness zones or conductive zones which characterize shear zones following an E-W strike
Summary
The reliability of any geophysical exploration result is supported by the geological background assessment of a given area, no matter its purpose. A geoelectrical investigation has been made in the Tindikala-Boutou village of the Ngoura subdivision (Eastern-Cameroon). The approach consists in collecting apparent resistivity data using the Direct Current Schlumberger’s geoelectrical investigation (sounding and profiling). Data will be processed with Res2Dinv, Winsev and Surfer softwares. Given as pseudo sections of resistivity, resistivity maps will be able to plot tectonic unevenness of the area under study and to characterize the associated mineralization. The geological sections realized through the interpretation of electrical soundings will bring out the correlation between the resistivity data and the geological background of the studied area
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