Abstract
This study was carried out to determine the anisotropic properties of parts of the Southwestern Basement Complex of Nigeria in Ijebu Igbo, which is underlain by migmatite gneiss and older granites.The surface water level (SWL) of 107 hand-dug wells were measured to determine the groundwater flow direction of the area. Thirty Azimuthal Resistivity Survey (ARS) were investigated along four azimuths; 0°, 45°, 90°, and 135° to determine the electrical anisotropy, the trend of fractures and their behavioural pattern with depth. The quantitative interpretation of the Radial Vertical Electrical Sounding (RVES) curves involved the use of partial curve matching, and computer iteration using WINRESIST program ...
Highlights
Electrical resistivity anisotropy for geological prospecting has not been extensively used in surface geophysics despite the usefulness of electrical methods for detecting fluid - filled fractures (Mamah and Ekine, 1989, Olasehinde and Bayewu, 2011)
Surface geophysical techniques can be an invaluable tool in mapping the structural features of the concealed crystalline basement rocks (Olorunfemi and Opadokun, 1987) and in the detection of microfabrics resulting from basement tectonic in sedimentary terrain (Mamah and Ekine, 1989)
The surface water level was calculated from the difference between the well water depth and the elevation from the Google Earth software
Summary
Electrical resistivity anisotropy for geological prospecting has not been extensively used in surface geophysics despite the usefulness of electrical methods for detecting fluid - filled fractures (Mamah and Ekine, 1989, Olasehinde and Bayewu, 2011). Electrical anisotropy of crystalline basement rocks is often attributed to structural elements like foliations, joints and fractures (Billings 1972; Malik, et al, 1983). It has been shown by Odeyemi, et al, (1985); Beeson and Jones, (1988); Esu, (1993) and Edet et al, (1994) that the well yield and its direction flow in fractured rocks is directly related to the density, frequency, orientation and inter-connection of structural features at depth
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
