%0 Journal Article
%T An appraisal of the geologic structure beneath the Ikogosi warm spring in south-western Nigeria using integrated surface geophysical methods
%A Ojo
%A J. S
%A Olorunfemi
%A M. O
%A Falebita
%A D. E
%J Earth Sciences Research Journal
%D 2011
%I Universidad Nacional de Colombia
%X an integrated surface geophysical investigation involving resistivity and magnetic methods was carried out in the immediate vicinityof the ikogosi warm spring situated in south-western nigeria with a viewto delineating its subsurface geological sequence and evaluating the structural setting beneath the warm spring. total field magnetic measurements and vertical electrical sounding (ves) data were acquired along five n-s traverses. magnetic and ves data interpretation involved inverse modelling. the inverse magnetic models delineated fractured quartzite/faulted areas within fresh massive quartzite at varying depths and beneath all traverses. the geoelectrical sections developed from ves interpretation results also delineated a subsurface sequence consisting ofa topsoil/weathered layer, fresh quartzite, fractured/faulted quartzite and fresh quartzite bedrock. it was deduced that the fractured/faulted quartzite may have acted as conduit for the movement ofwarm groundwater from profound depths to the surface while the spring outlet was located on a geological interface (lineament).
%K magnetic
%K resistivity
%K warm spring
%K ikogosi
%K nigeria.
%U http://www.scielo.org.co/scielo.php?script=sci_abstract&pid=S1794-61902011000100004&lng=en&nrm=iso&tlng=en