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RMZ – MATERIALI IN GEOOKOLJE

RMZ – MATERIALI IN GEOOKOLJE

RMZ – MATERIALI IN GEOOKOLJE

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The groundwater potential evaluation at industrial estate Ogbomoso, ...373Results and discussionThe presence of groundwater in anyrock presupposes the satisfaction of twofactors: adequate porosity and adequatepermeability. On account of their crystallinenature, the metamorphic and igneousrocks of the Basement Complexsatisfy neither of these requirements.Basement complex rocks are thus consideredto be poor aquifers because oftheir low primary porosity and permeabilitynecessary for groundwater accumulation(Davis & De Weist, 1966).However, secondary porosity and permeabilityimposed on them by fracturing,fissuring, jointing, and weatheringthrough which water percolates makethem favourable for groundwater storage(Omorinbola, 1979).Figure 3(a). The modeled curve for VES 1 to VES 6<strong>RMZ</strong>-M&G 2012, 59

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