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dc.rights.licenseAtribución-NoComercial 4.0 Internacional
dc.contributor.authorStephen O, Ariyo
dc.contributor.authorAdetayo F, Folorunso
dc.contributor.authorO.M, Ajibade
dc.date.accessioned2019-06-28T03:22:40Z
dc.date.available2019-06-28T03:22:40Z
dc.date.issued2011
dc.identifier.urihttps://repositorio.unal.edu.co/handle/unal/39101
dc.description.abstractAcombined geological and geophysical evaluation was madeof the groundwater potential of the Ajana, RemoNorth area in south-western Nigeria; the geology and other structural features of the rocks there strongly influenced and correlated the aquifers' storability and transmissivity. Geological mapping revealed that the area was made up of granite, quartzite and varieties of gneiss, some of which have good secondary porosity and permeability. Ten vertical electric soundings (VES) stations were established using a Schlumberger electrode array. Five geoelectric layers consisting of topsoil, sand,clayey-sandy, fractured / weathered basement and fresh bedrock were delineated. The aquifer layers were the 38.3m thick 283 ?m resistivity sand/sandy clay and 55 - 518 ?m resistivity fractured/weathered basement. Other geoelectric parameters used in evaluating the area's hydrogeological potential included curve type, anisotropy coefficient and reflection coefficient - The QH curve type was predominant in the area. The anisotropy Coefficients suggested VES stations having high groundwater potential ranging from 1.4 - 1.56; while the reflection coefficients for the area ranged from 0.21 - 0.99. The overall results showed that VES stations 8, 9 and 10 could be possible groundwater sources having high expected yield.
dc.format.mimetypeapplication/pdf
dc.language.isospa
dc.publisherUNIVERSIDAD NACIONAL DE COLOMBIA
dc.relationhttp://revistas.unal.edu.co/index.php/esrj/article/view/27203
dc.relation.ispartofUniversidad Nacional de Colombia Revistas electrónicas UN Earth Sciences Research Journal
dc.relation.ispartofEarth Sciences Research Journal
dc.relation.ispartofseriesEarth Sciences Research Journal; Vol. 15, núm. 1 (2011); 35-40 Earth Sciences Research Journal; Vol. 15, núm. 1 (2011); 35-40 2339-3459 1794-6190
dc.rightsDerechos reservados - Universidad Nacional de Colombia
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/
dc.subject.ddc62 Ingeniería y operaciones afines / Engineering
dc.titleGeological and geophysical evaluation of the ajana area’s groundwater potential, southwestern nigeria
dc.typeArtículo de revista
dc.type.driverinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.eprintshttp://bdigital.unal.edu.co/29198/
dc.identifier.eprintshttp://bdigital.unal.edu.co/29198/2/
dc.relation.referencesStephen O, Ariyo and Adetayo F, Folorunso and O.M, Ajibade (2011) Geological and geophysical evaluation of the ajana area’s groundwater potential, southwestern nigeria. Earth Sciences Research Journal; Vol. 15, núm. 1 (2011); 35-40 Earth Sciences Research Journal; Vol. 15, núm. 1 (2011); 35-40 2339-3459 1794-6190 .
dc.rights.accessrightsinfo:eu-repo/semantics/openAccess
dc.type.coarhttp://purl.org/coar/resource_type/c_6501
dc.type.coarversionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.contentText
dc.type.redcolhttp://purl.org/redcol/resource_type/ART
oaire.accessrightshttp://purl.org/coar/access_right/c_abf2


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Atribución-NoComercial 4.0 InternacionalThis work is licensed under a Creative Commons Reconocimiento-NoComercial 4.0.This document has been deposited by the author (s) under the following certificate of deposit