Abstract Twenty nine (29) water samples and 24 soil samples were collected from three lithologic terrains. The waters were subjected to Atomic Absorption Spectrophotometer (AAS). The soils were subjected to California Bearing Ratio (CBR) tests. The AAS revealed that water from gneiss/schist terrain have mean Ca2+, Na+, Mg2+ and K+ concentrations of 25.09, 13.14, 10.92 and 3.90 mg/l respectively; water from granite terrain have mean Ca2+, Na+, Mg2+ and K+ concentrations of 13.68, 6.39, 5.45 and 2.78 mg/l respectively while water from sandstone terrain have mean Ca2+, Na+, Mg2+ and K+ concentration of 7.82, 1.61, 1.41 and 2.16 mg/l respectively. The CBR tests revealed that the soils from gneiss/schist terrain have mean soaked and unsoaked CBRs of 12.37% and 13.75% respectively; soils from granite terrain have mean soaked and unsoaked CBRs of 35.25% and 65.53% respectively; while soils from sandstone terrain have mean soaked and unsoaked CBRs of 78.13% and 104.13% respectively. Results revealed that terrains of shallow groundwater depth are characterized by low CBRs and vice versa. This work has shown that the variation existing between the groundwater cation concentrations and overlying residual soil CBRs is based on the intrinsic properties of the lithology that formed the soil and that is hosting the groundwater.

中文翻译：

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地下水深度和阳离子浓度随残留土壤 CBR 的变化：尼日利亚中北部三个岩性地形的案例研究

摘要 从三个岩性地形采集了二十九 (29) 个水样和 24 个土壤样品。对水进行原子吸收分光光度计 (AAS)。对土壤进行了加利福尼亚承载比 (CBR) 测试。AAS 显示来自片麻岩/片岩地形的水的平均 Ca2+、Na+、Mg2+ 和 K+ 浓度分别为 25.09、13.14、10.92 和 3.90 毫克/升；花岗岩水的平均 Ca2+、Na+、Mg2+ 和 K+ 浓度分别为 13.68、6.39、5.45 和 2.78 毫克/升，而砂岩地水的平均 Ca2+、Na+、Mg2+ 和 K+ 浓度为 7.82、1.61、1.461 和 2 mg2。 /l 分别。CBR 测试表明，片麻岩/片岩地层土壤的平均浸泡和未浸泡 CBR 分别为 12.37% 和 13.75%；来自花岗岩地形的土壤的平均浸泡和未浸泡 CBR 为 35。分别为 25% 和 65.53%；而来自砂岩地形的土壤的平均浸泡和未浸泡 CBR 分别为 78.13% 和 104.13%。结果表明，浅地下水深度的地形具有低 CBR 的特征，反之亦然。这项工作表明，地下水阳离子浓度和上覆残余土壤 CBR 之间存在的差异是基于形成土壤和承载地下水的岩性的内在特性。