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Aeromagnetic and remote sensing evidence for structural framework of the middle Niger and Sokoto basins, Nigeria
Physics of the Earth and Planetary Interiors ( IF 2.4 ) Pub Date : 2020-12-01 , DOI: 10.1016/j.pepi.2020.106593
Naheem Banji Salawu , Julius Ogunmola Fatoba , Leke Sunday Adebiyi , Jimoh Ajadi , Aliyu Saleh , Silas Sunday Dada

Abstract High resolution aeromagnetic and Shuttle Radar Topography Mission data from parts of the N-S axis of the western half of Nigeria that covers the Middle Niger and Sokoto Basins provide a coherent picture for the surface expression of the linear and curvilinear features and the topography of the zone. It equally identifies the boundaries of the sedimentary basins with depths up to 950 m, thereby establishing the controlling architectural framework of the two basins. The relationship between observed structural features and lateral continuity of the Anka–Yauri–Iseyin and Kalangai–Zungeru-Ifewara shear zones and their implication on the mineral deposits in the region has been reinforced. The three-dimensional analytic signal applied to the aeromagnetic data unveiled magnetic structures and depths to magnetic basement were estimated using the source parameter imaging technique. The results identified several E-W, NW-SE, NNE-SSW and ENE-WSW trending structural features, two of which correspond to the NNE-SSW trending Anka–Yauri–Iseyin and Kalangai–Zungeru-Ifewara shear zones formed during the Pan-African. Additionally, we unravel a sedimentary pile, here called Libata-Auna sub-basin, connecting the Middle Niger and Sokoto Basins. The shred of evidence derived from both methods reveal the potential of the faults system through the crystalline and the sedimentary parts of the studied area for future minerals exploration projects.

中文翻译:

尼日利亚中部尼日尔和索科托盆地结构框架的航磁和遥感证据

摘要 来自覆盖尼日尔中部和索科托盆地的尼日利亚西半部 NS 轴部分的高分辨率航磁和航天飞机雷达地形任务数据为线性和曲线特征的表面表达以及该区域的地形提供了连贯的图片. 它同样确定了深度达 950 m 的沉积盆地的边界,从而建立了两个盆地的控制构架框架。Anka-Yauri-Iseyin 和 Kalangai-Zungeru-Ifewara 剪切带的观测结构特征与横向连续性之间的关系及其对该地区矿床的影响得到了加强。应用于航磁数据的三维分析信号揭示了磁性结构,并使用源参数成像技术估计了磁性基底的深度。结果确定了几个 EW、NW-SE、NNE-SSW 和 ENE-WSW 走向的结构特征,其中两个对应于泛非期间形成的 NNE-SSW 走向的 Anka-Yauri-Iseyin 和 Kalangai-Zungeru-Ifewara 剪切带. 此外,我们还解开了一个沉积桩,这里称为 Libata-Auna 子盆地,连接尼日尔中部和索科托盆地。从这两种方法中得出的一点点证据都揭示了断层系统通过研究区域的结晶和沉积部分为未来矿物勘探项目提供的潜力。NNE-SSW 和 ENE-WSW 走向构造特征,其中两个对应于泛非期间形成的 NNE-SSW 走向 Anka-Yauri-Iseyin 和 Kalangai-Zungeru-Ifewara 剪切带。此外,我们还解开了一个沉积桩,这里称为 Libata-Auna 子盆地,连接尼日尔中部和索科托盆地。从这两种方法中得出的一点点证据都揭示了断层系统通过研究区域的结晶和沉积部分为未来矿物勘探项目提供的潜力。NNE-SSW 和 ENE-WSW 走向构造特征,其中两个对应于泛非期间形成的 NNE-SSW 走向 Anka-Yauri-Iseyin 和 Kalangai-Zungeru-Ifewara 剪切带。此外,我们还解开了一个沉积桩,这里称为 Libata-Auna 子盆地,连接尼日尔中部和索科托盆地。从这两种方法中得出的一点点证据都揭示了断层系统通过研究区域的结晶和沉积部分为未来矿物勘探项目提供的潜力。
更新日期:2020-12-01
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