Groundwater potential assessment in a sedimentary terrain, southwestern Nigeria
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Publisher
Springer
Abstract
Description
Geoelectrical resistivity techniques are increasingly
being applied in addressing a wide range of hydrological,
environmental, and geotechnical problems. This is due to their
effectiveness in near-surface characterization. In the present
study, a suite of vertical electrical soundings (VESs) was integrated
with 2D geoelectrical resistivity and time-domain induced
polarization (IP) imaging to characterize the nearsurface
and delineate the underlying aquifer in a sedimentary
terrain. The geophysical survey was conducted as part of preliminary
studies to evaluate the potential of groundwater resource
in Iyana-Iyesi and Canaan Land area of Ota, southwestern
Nigeria. A high-yield confined sandy aquifer overlain
by a low-yield aquitard was delineated; overlying the aquitard
is a very resistive and thick layer that is predominantly composed
of kaolinitic swelling clay intercalated with phosphate
mineral.
Keywords
Q Science (General), QC Physics