_____________________________________________________________________________________________________ *Corresponding author: E-mail: tydon4real@yahoo.co.uk, adewumi.taiwo@fulafia.edu.ng; Asian Journal of Physical and Chemical Sciences 2(1): 1-8, 2017; Article no.AJOPACS.32302 SCIENCEDOMAIN international www.sciencedomain.org Estimation of Sedimentary Thickness Using Spectral Analysis of Aeromagnetic Data over Part of Bornu Basin, Northeast, Nigeria T. Adewumi 1* , K. A. Salako 2 , M. K. Salami 3 , M. A. Mohammed 1 and E. E. Udensi 2 1 Department of Physics, Federal University Lafia, Nigeria. 2 Department of Physics, Federal University of Technology Minna, Nigeria. 3 Department of Physics, Baze University Abuja, Nigeria. Authors’ contributions This work was carried out in collaboration between all authors. Author TA wrote the manuscript and analyzed the data. Author KAS designed the study. Author MKS checked the protocol of the study and managed the literature searches. Author MAM appraised data quality. Author EEU checked the grammar and language. All authors read and approved the final manuscript. Article Information DOI: 10.9734/AJOPACS/2017/32302 Editor(s): (1) Hesham Mansour, Physics Department, Faculty of Science, Cairo University, Egypt. Reviewers: (1) Joshua Emmanuel Oluwagbemi, University of Ibadan, Ibadan, Nigeria. (2) Gabriel Zeruwa Ugwu, Enugu State University of Science and Technology, Enugu, Nigeria. Complete Peer review History: http://www.sciencedomain.org/review-history/18434 Received 19 th February 2017 Accepted 24 th March 2017 Published 31 st March 2017 ABSTRACT The aeromagnetic data (High resolution) over part of Bornu Basin NE was interpreted using spectral analysis to estimate the sedimentary thickness of the study area. The study area is covered by four aeromagnetic data sheets covering latitude 12°N and 13°N and Longitude 12°E and 13°E with an estimated total area of 12, 100 km 2 . Polynomial fitting method was adopted for the regional-residual separation of the total magnetic intensity. The residual map was divided into nine spectral sections. The result of the study shows a sedimentary thickness that ranges between 0.29 km and 3.35 km. The sedimentary thickness of over 3 km could be found around the South- eastern part of the study area which corresponds to Gubio town while the minimum sedimentary thickness could be found around North-western part of the study area which also corresponds to Borgo town area. The maximum sedimentary thickness of 3.35 km may be sufficient for hydrocarbon presence. Original Research Article