Analysis and interpretation of high resolution aeromagnetic data over Kabo town and its adjoining areas, in Northwestern Nigeria

Abstract

INTRODUCTION Geophysics is a subject of natural science is concerned with the physical processes and physical properties of the Earth and its surrounding space environment using the physics principles to the study of the earth's interior. It is therefore a threeof the principles of Physics to the Earth, Moon and Planets (Reynolds, Geophysics is applied to societal needs, such as mineral resources, mitigation of natural hazards and environmental protection. Geophysical survey data are used to analyze potential petroleum reservo deposits, locate groundwater and it also plays an essential role in the development of the theory of plate tectonics. The Earth acts like a large spherical magnet: it is surrounded by a magnetic field that changes with time and location. The field is generated by a dipole magnet (i.e., a straight magnet with a North and South Pole) located at the center of the Earth. The magnetic fields of geological bodies are superimposed on the background of the Earth's main field. Variations in magnitude and direction of this field influence both the magnitudes and shapes of local anomalies. The purpose of magnetic surveying is to identify and describe regions of the earth's crust that have unusual (anomalous)

Structural Analysis of High Resolution Aeromagnetic Data. A Case Study of Akko and Environs, Gongola Basin upper Benue Trough Northeastern Nigeria: Implication for Mineralization and Groundwater Potentials

“…The lineament density map and the rose diagram of the study area are shown in Figure 7. There is consistency in the lineament hereby inferred and the previously inferred lineaments in the region [1,11,12].…”

“…The Earth could be thought of as a large and spherical magnet surrounded by a variable magnetic field. Dipole magnet at the center of the Earth with North and South Pole generates the field [1]. Measured magnetic field at a point is from the superimposition of the magnetic field of geological bodies at the point on the Earth's background magnetic field.…”

Evaluation of Upward Continuation and Reduction Toevaluation of Upward Continuation and Reduction to Magnetic Equator on Airborne Magnetic Data Magnetic Equator on Airborne Magnetic Data

“…The upward continued field is determined by taken the product of the upward continued filter in the frequency domain and the Fast Fourier Transform magnetic data. The multiplication result is the inverse Fast Fourier Transform to the space domain in obtaining upward continuation data (Suleiman et al, 2018). However, the residual airborne magnetic data of the study area were upward continued to a height of 500 m, 1000 m, 2000 m and 3000 m (figure 5a-d) so that the short wavelength signals were minimized for enhancement of deeper anomalies effect (i.e.…”