Structural Interpretation and Depth to the Magnetic Basement, Using Aeromagnetic Data of Nkalagu and Abakaliki Areas, Southeastern, Nigeria

Nnaemeka Ejike Kingsley,Ibuot Johnson C,Obiora Daniel N

doi:10.35840/2631-5033/1854

Nnaemeka Ejike Kingsley, Ibuot Johnson C + Show 1 more

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https://doi.org/10.35840/2631-5033/1854

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Abstract

The aeromagnetic data of this region was interpreted to delineate its structural framework, as well as the depth to magnetic basement that could support accumulation of economic minerals. The acquired data was subjected to different enhancement techniques which include: Reduction to the equator (RTE) analytical signal, center for exploration targeting (CET) as well as two depth estimation methods of source parameter imaging (SPI) and located Euler deconvolution. Results from analytical signal and CET, delineated and enhanced the magnetic signatures

Highlights

The aeromagnetic methods have been employed in many geophysical investigations across the lower benue trough and Nigeria at large to map tectonic structures which serve as potential hosts for variety of mineral deposits, which could be guide for finding the requisite information on the mineral exploration campaign of the host rocks
It is of interest to know that, Structural interpretation and depth estimation have been carried out within the Trough; Onyewuchi, et al [1] investigated Nkalagu area employing Landsat imagery and aeromagnetic in estimating basement morphology, depth to magnetic basement, relief and structural attributes associated with the area and to deduce the effects of such structures on the general tectonic history of the region
The reduction to the magnetic equator (Figure 3) revealed similar feature of faulted zone at the southeastern part observed in the Total Magnetic Intensity (TMI) map, but appeared smoother and defined the high and low centers better than the TMI map because the regional field have been separated from the TMI data

Summary

Introduction

The aeromagnetic methods have been employed in many geophysical investigations across the lower benue trough and Nigeria at large to map tectonic structures which serve as potential hosts for variety of mineral deposits, which could be guide for finding the requisite information on the mineral exploration campaign of the host rocks. It is of interest to know that, Structural interpretation and depth estimation have been carried out within the Trough; Onyewuchi, et al [1] investigated Nkalagu area employing Landsat imagery and aeromagnetic in estimating basement morphology, depth to magnetic basement, relief and structural attributes associated with the area and to deduce the effects of such structures on the general tectonic history of the region. Their results revealed lineaments trending the NE-SW, Citation: Nnaemeka EK, Obiora DN, Ibuot JC (2021) Structural Interpretation and Depth to the Magnetic Basement, Using Aeromagnetic Data of Nkalagu and Abakaliki Areas, Southeastern, Nigeria.

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