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Research Article Open access CC BY 4.0

Edge Detection and Depth to Magnetic Source Estimation in Part of Central Nigeria

Mam D. Tawey, Abbass A. Adetona, Usman D. Alhassan, Abdulwaheed A. Rafiu, Kazeem A. Salako, Emmanuel E. Udensi

Physical Science International Journal · pp. 54–67 · Published 9 Sep 2020

10.9734/psij/2020/v24i730203

Abstract

High-resolution aeromagnetic data covering an area of 24, 200 km2 in north central Nigeria has been acquired and analyzed with the aim of carrying out trend analysis, edge detection (structural delineation) and depth to magnetic source estimation using reduce to the pole (RTP), horizontal gradient magnitude (HGM), center for exploration targeting plug-in (CET), 3D Euler deconvolution and source parameter imaging (SPI) techniques. Trend analysis was applied to the RTP data to delineate structures that have dissected the area. The 3D Euler deconvolution and HGM were correlated by plotting the estimated Euler solutions for a structural index of one (SI=1) on HGM map and the resulting map produced have shown that both methods can contribute in the interpretation of the general structural framework of the study area. The structural delineation based on HGM and CET maps showed that two predominant trends (ENE-WSW) and (WNW-ENE) have affected the area. The trend/depth/contacts of these faults were classified into four groups: Faults <150 m, 150 m - 300 m, 300m - 450 m which are the most predominant fault system based on Euler solutions with a structural index of one (SI=1) and those deeper than 450 m while the result of source parameter imaging (SPI) revealed a depth to source varying from 58 m specifically for areas with shallow depth to the magnetic source to those from deeper source occurring at 588.153m depth especially the south-central portion and the south-eastern portion of the study area.

RTP HGM CET deconvolution SPI.

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Cited by 3

Application of Airborne Magnetic Data to Assess the Structures that Favour Gold Mineralization within Southern Parts of Katsina State, Nigeria

Akpaneno, A. F., Tawey, M. D · Journal of Geography, Environment and Earth Science International · 2024

Regional-residual depth estimation and edge detection characterization over the southern Kibi–Winneba belt, Ghana using aeromagnetic data

Eric Dominic Forson · Acta Geophysica · 2023

Assessment of Structures and Depth to Magnetic Source in the Southern Part of Katsina State Using Aeromagnetic Data

Akpaneno, A. F., Tawey, M. D., Abdulwaheed, A. T. · Advanced Journal of Science, Technology and Engineering · 2025

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