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Mapping magnetic lineaments and subsurface basement beneath parts of Lower Benue Trough (LBT), Nigeria: Insights from integrating gravity, magnetic and geologic data

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Abstract

In this study, we present the analysis of the aeromagnetic data of parts of the Lower Benue Trough. Lineament analysis of the aeromagnetic data demonstrated four tectonic trends of the basement terrain. The lineaments are in the northeast to southwest (NE–SW), east, northeast to west, southwest (ENE–WSW), north to south (N–S), and east, southeast to west, northwest (ESE–WNW) directions. The NE–SW and ENE–WSW are the most dominant whereas the N–S and ESE–WNW are the minor trends. The estimated magnetic basement using spectral analysis vary between 3.5 and 5 km and the shallow magnetic sources (depth to top of intrusions) vary between 0.24 and 1.2 km. The result of the basement estimation from the magnetic data is comparable with the previous results from other studies as well as with the basement depth estimated from the gravity data of part of the present study area are incorporated in the study. From the gravity data, we identified sub-basin around Makurdi and basement of the sedimentary basin (5 km) is estimated using GPSO algorithm and Oasis Montaj (Geosoft).

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Acknowledgements

The first author wishes to acknowledge the Tertiary Education Trust Fund (TET Fund), Nigeria through Modibbo Adama University of Technology, Yola (Nigeria) for financial support of his PhD research. The data to this research was arranged through the Nigerian Geological Survey Agency (NGSA), Abuja office, Nigeria. We are indebted to Dr Arkoprovo Biswas, the associate editor and the two anonymous reviewers for the constructive comments and suggestions on the paper.

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  1. Department of Applied Geophysics, Indian Institute of Technology (ISM), Dhanbad, 826 004, India

    Mukaila Abdullahi, Upendra K Singh & Ravi Roshan

  2. Physics Unit, Department of Science Laboratory Technology, Modibbo Adama University of Technology, Yola, Nigeria

    Mukaila Abdullahi

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  1. Mukaila Abdullahi
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Correspondence to Mukaila Abdullahi.

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Corresponding editor: Arkoprovo Biswas

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Abdullahi, M., Singh, U.K. & Roshan, R. Mapping magnetic lineaments and subsurface basement beneath parts of Lower Benue Trough (LBT), Nigeria: Insights from integrating gravity, magnetic and geologic data. J Earth Syst Sci 128, 17 (2019). https://doi.org/10.1007/s12040-018-1038-9

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