Structural Exploration of Aeromagnetic Data over Part of Gwagwala­da,Abuja for Potential Mineral Targets Using Derivatives Filters  

作　　者：Priscillia Egbelehulu Abu Mallam Abel U.Osagie Adewumi taiwo 

机构地区：[1]Department of Physics,University of Abuja,Abuja,Nigeria [2]Department of Physics,Federal University lafia,Nasarawa,Nigeria

出　　处：《Journal of Geological Research》2021年第3期44-51,共8页地质研究（英文）

摘　　要：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.

关 键 词：AEROMAGNETIC Derivative filters FAULTS MINERALIZATION 

分 类 号：O62[理学—有机化学]