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International Journal of Fundamental Physical Sciences IJFPS 22318186 10.14331/ijfps https://fundamentaljournals.org/index.php/ijfps/index 06 2013 3 2 Spectral Analysis of Aeromagnetic Data over Part of the Southern Bida basin, West-Central Nigeria Department of Geology, Benue State Polytechnic Ugbokolo, Nigeria Ikumbur Emmanuel Bemsen Qualitative and quantitative interpretations of aeromagnetic map over part of the Southern Bida Basin, West-Central Nigeria have carried out using spectral analysis. The aeromagnetic maps digitized along flight lines of 2km interval. The qualitative interpretation of the magnetic anomaly and first vertical derivative maps revealed that the area is intensely faulted with major faults trending East-West (E-W) and minor ones Northeast-Southwest (NE-SW) directions. The result obtained using the spectral method reveals two depth sources in the area, the deeper sources range from 2.81 to 3.24km, while the shallower sources range from 0.45 to 1.49km.The result also shows a linear depression with sedimentary accumulation trending E-W. The average sedimentary thickness in the region is about 2.90km 06 2013 27 31 10.14331/ijfps.2013.330050 https://www.fundamentaljournals.org/index.php/ijfps/article/view/135