The NW-SE oriented Middle Niger Basin, which is a Campano-Maastrichtian inland basin has been the subject of debate among geoscientists regarding its origin and development. This paper aims to unravel the basin's origin and evolution by using high-resolution magnetic, gravity, and topographical data. The integration of aeromagnetic and gravity data provides a means to assess the influence of igneous intrusions during the basin's evolution. The study presents a new perspective on the origin of the basin, suggesting a rift origin where orthogonal extension played a crucial role in its evolution. The research also investigates the relationship between intrusive rocks and the formation of the basin, finding these rocks are solely located within the basement. The magnetic and gravity maps reveal anomalies associated with intrusive structures within the Precambrian crystalline basement. This is a common feature shared with rifted basins on a global scale.

中文翻译：

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重磁数据反演和建模揭示尼日利亚尼日尔中部盆地有裂谷起源

西北-东南方向的尼日尔中部盆地是坎帕诺-马斯特里赫特内陆盆地，一直是地球科学家关于其起源和发展争论的话题。本文旨在利用高分辨率磁力、重力和地形数据来揭示该盆地的起源和演化。航磁和重力数据的整合提供了一种评估盆地演化过程中火成岩侵入影响的方法。这项研究提出了关于盆地起源的新视角，表明正交伸展在其演化过程中发挥了至关重要的作用。该研究还调查了侵入岩与盆地形成之间的关系，发现这些岩石仅位于基底内。磁力图和重力图揭示了与前寒武纪结晶基底内侵入结构相关的异常现象。这是全球范围内裂谷盆地的共同特征。