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۱2–D resistivity tomography for groundwater exploration in a basement complex of part of ago–iwoye, southwestern nigeria
اطلاعات انتشار: اولین کنفرانس بین المللی مدیریت منابع آب، سال
تعداد صفحات: ۹
Groundwater search in a basement complex rock using 2–D resistivity imaging survey with Wenner Electrode configuration was carried out in Olabisi Onabanjo University, Main Campus, a suburb of Ago–Iwoye. The results show 3–5 layers which signify different lithological units evcountered as resistivity values were converted into geologically reasonable picture. 2–D resistivity image interpretation indicates low inverted resistivity values sandwich between two high values which is an indication of bedrock depression. Combined interpretation of the 2–D joined with geologic features and topography of the site reveal that the study area can be divided into three hydrogeological sequences; the topsoil variously composed of lateritic soil and sand\sandy clay, followed by highly weathered\fractured rock sequence and deep–seated hard and compact fresh rock section. A deep–drilled tube well site is recommended based on traverse 2 at surface position 75m and up to a depth of 90m±10m because the water flow from the crest to the synclinal water–accumulation zone (depression) which serves as groundwater collection center.<\div>
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