Aeromagnetic data are consistently used for economic interest targeting and geological mapping.Besides solving problems that are concerned with the basement,the method has become a useful tool in exploring minerals,hy...Aeromagnetic data are consistently used for economic interest targeting and geological mapping.Besides solving problems that are concerned with the basement,the method has become a useful tool in exploring minerals,hydrocarbons occurrence,groundwater investigations,and geothermal potentials.This study analyses aeromagnetic data from the Nigerian Geological Survey Agency acquired at 100 m terrain clearance over a section of Gwagwalada in Abuja.The study area spans longitudes 7.0875°E to 7.1458°E and latitude 8.9625°N to 9.0°N(about 27 km^(2)).After a reduction to the equator(RTE)transformation,the data is downward continued by 50 m.Different filters are applied to outline area of alteration associated to mineral deposit.Regional geologic structures trend NE-SW.The application of vertical derivatives(FVD and SVD)to the RTE grid enhanced shallow structures which trend NE-SW.Horizontal gradients along the X-and Y-directions enhance geological contacts attributable to blind faults.The Tilt derivative(TD)accentuated fault lines which trend NE-SW.展开更多
文摘Aeromagnetic data are consistently used for economic interest targeting and geological mapping.Besides solving problems that are concerned with the basement,the method has become a useful tool in exploring minerals,hydrocarbons occurrence,groundwater investigations,and geothermal potentials.This study analyses aeromagnetic data from the Nigerian Geological Survey Agency acquired at 100 m terrain clearance over a section of Gwagwalada in Abuja.The study area spans longitudes 7.0875°E to 7.1458°E and latitude 8.9625°N to 9.0°N(about 27 km^(2)).After a reduction to the equator(RTE)transformation,the data is downward continued by 50 m.Different filters are applied to outline area of alteration associated to mineral deposit.Regional geologic structures trend NE-SW.The application of vertical derivatives(FVD and SVD)to the RTE grid enhanced shallow structures which trend NE-SW.Horizontal gradients along the X-and Y-directions enhance geological contacts attributable to blind faults.The Tilt derivative(TD)accentuated fault lines which trend NE-SW.
