Abstract
Geothermal Gradient, Curie Point Depth and Heat Flow Determination of Some Parts of Lower Benue Trough and Anambra Basin, Nigeria, Using High Resolution Aeromagnetic Data
Highlights
Aeromagnetic technique is a type of geophysical technique in which a magnetometer is towed behind an aircraft
These results suggest alternative geothermal energy resource to be plausible within windows 2, 4, 8, 10, 12, 15 and 16 and presence of some amount of sedimentary thickness within the area of study
The Fast Fourier Transform (FFT) modeling aided in decomposing each of the window data set into its frequency components
Summary
Aeromagnetic technique is a type of geophysical technique in which a magnetometer is towed behind an aircraft. Aeromagnetic method has been used majorly for the estimation of depth to basement and thickness of sediments within sedimentary basins This method was used in mapping igneous and metamorphic rocks and structures related to them because these rocks have high magnetization compared to other rocks [2,3]. This study, which is bounded within Latitude 6° 00’-6° 30’N and Longitude 7°00’ 7° 30’E with an approximate area of about 3025 km within parts of lower Benue trough and Anambra basin of Nigeria, aims at outlining the regional temperature distribution and delineating areas that are geo thermally responsive by determining: the heat change per unit distance, the heat flowing from the earth’s interior to the outer surface and the deepest depth at which the minerals loss their magnetic properties within the study area without any heat data. Conclusion: These results suggest alternative geothermal energy resource to be plausible within windows 2, 4, 8, 10, 12, 15 and 16 and presence of some amount of sedimentary thickness within the area of study
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