Qualitative Interpretation of Recently Acquired Aeromagnetic Data of Naraguta Area, North Central Nigeria
Journal Title: Journal of Geography, Environment and Earth Science International - Year 2017, Vol 11, Issue 3
Abstract
This study on Qualitative Interpretation of recently acquired aeromagnetic data of Naraguta, sheet 168 was aimed at analysing and interpreting the data, identifying the subsurface structures and the mineralized zones. Using some software packages, the data was analysed using the following processes; Total Magnetic Intensity (TMI), Reduced-To-Equator (RTE), Upward Continuation and First Vertical Derivative (FVD). Results from the analysis show that the magnetic intensity range for TMI map varies from -696.9 to 599.2 nT/m, RTE varies from -430.1 to 346.4 nT/m both showing anomalies in circular to near circular closures which could be associated with granitic intrusions, long narrow features which could be dykes or long ore bodies and dislocations which could be due to subsurface fractures. Upward continuation map at 3 km deep revealed a basement trending mostly in the NE-SW and ENE-WSW directions with the latter being the major trend direction. The first vertical derivative sharpened the anomaly edges which were extracted to produce the lineament map and to obtain the rose plot. The rose plot shows the dominant lineament trend to be in the NE-SW direction. Finally, the analytic signal maxima may represent the edges of circular, elliptical or polygonal porphyritic ring dykes that characterize many of the complexes in the study area. Comparison of this study with previous research done using an old data of Naraguta sheet 168, shows similarities with few differences noticed especially in the TMI map which may be attributed to sophistication in equipment used or the effects of temporal variation on the geomagnetic field of the earth which helped in making visible anomalies that were hidden in the former data of Naraguta sheet 168.
Authors and Affiliations
E. J. Ngama, E. S. Akanbi
Keywords
Related Articles
- EP ID EP321468
- DOI 10.9734/JGEESI/2017/35529
- Views 72
- Downloads 0
Petroleum Geology of Outcropping Sediments along Imiegba Road in Etsako East Local Government Area of Edo State, Southern Anambra Basin Flank, Nigeria: Inference from Sedimentology and Organic Geochemistry
The outcropping sediments along Imiegba road have been studied using their sedimentological and organic geochemical (Total organic carbon, TOC and Soluble organic matter, SOM) parameters. A total of sixteen (16) samples...
Community’s Perception towards Adoption of Information, Communication and Technology (ICT) in Artisanal Gold Mining within Nandi and West Pokot Counties, Kenya
Use of ICT in artisanal gold mining provides information on new improved gold mining technologies which are environmentally friendly with a higher recovery rate of gold hence better income to the miners while conserving...
An Indication of Intentional Efforts to Cause Global Warming and Glacier Melting
Aims: On or about February 14, 2016, an oily-ashy substance was accidently released by an aircraft and fell on seven residences and vehicles in Harrison Township, Michigan (USA). The aims of this investigation are to ana...
2-D Electrical Resistivity Survey for Cassiterite Potential Mapping in Jos-Bukuru Area, North Central, Nigeria
Aim: To use 2-D Electrical Resistivity method in Cassiterite Potential mapping in Jos-Bukuru Area, North Central, Nigeria. Methodology: Locations suspected to have very high probability for cassiterite mineralisation fr...
Application of Satellite Imagery in the Differentiation of the Invasive Species of Nipa from Mangrove Vegetation
Mangrove forests form one of the primary coastal ecosystems in the tropical and subtropical regions of the world with a high biodiversity value. Mangrove species are uniquely adapted to the Nigerian coasts, providing num...