The airborne Time-domain electromagnetic data acquired over the Ilesha Schist Belt in southwestern Nigeria were filtered, enhanced and analysed to generate ground conductivity responses at different time gates and employed to characterise the subsurface in terms of rock distribution, structural framework as well as evaluate the gold and base metal mineralisation potential of the region. The near-surface sensitive early time gate conductivity responses (EMZ₁ – EMZ₃) indicate relatively high subsurface conductivity distribution (60–120 mS/m) in amphibole schist and pegmatite terrain in the west while medium to low-conductivity (<5 mS/m) values were recorded in the east underlain by granitic rocks. Major and minor linear/sub-linear conductive features having conductivity in excess of 2 mS/m and trending NE-SW, NNE-SSW, NNW-SSE and ENE-WSW directions were delineated on the mid conductivity time gate responses (EMZ₃ – EMZ₅). One of which presents geometry and pattern consistent with the well-reported Ifewara – Iwaraja fault system that runs through the entire Ilesha Schist Belt. Very high anomalous conductivity (160–300 mS/m) responses at late conductivity time gates (EMZ₁₀ – EMZ₁₃) with characteristic long decay curves were obtained over isolated zones, especially along fractures and veins suggesting the occurrence of structurally controlled gold and base metal mineralisation.

在尼日利亚西南部 Ilesha 片岩带上获得的机载时域电磁数据经过过滤、增强和分析，以在不同时间门生成地面电导率响应，并用于表征地下岩石分布、结构框架以及评估该地区的黄金和贱金属矿化潜力。近表面敏感的早期栅极电导率响应 (EMZ ₁ – EMZ ₃) 表明西部闪石片岩和伟晶岩地形的地下电导率分布相对较高（60-120 mS/m），而东部花岗岩下的电导率值中到低（<5 mS/m）。电导率超过 2 mS/m 和趋势 NE-SW、NNE-SSW、NNW-SSE 和 ENE-WSW 方向的主要和次要线性/亚线性导电特征在中间电导率时间栅极响应（EMZ ₃ – EMZ ₅）。其中之一呈现的几何形状和图案与据报道的 Ifewara – Iwaraja 断层系统一致，该断层系统贯穿整个 Ilesha 片岩带。非常高的反常电导率 (160–300 mS/m) 响应延迟电导时间门 (EMZ ₁₀ – EMZ ₁₃) 在孤立的区域，特别是沿着裂缝和脉络，获得了具有特征长衰减曲线的特征，表明存在受结构控制的金和贱金属矿化。