Arid
Structural Analysis of Part of the Nigerian South-western Basement Complex using Aeromagnetic Data
Kayode, John S.; Nawawi, Mohd; Abdullah, Khiruddin
通讯作者Kayode, John S.
会议名称7th International Conference on Applied Geophysics (Geophysics)
会议日期JAN 14-15, 2016
会议地点Bangkok, THAILAND
英文摘要

Valuable and precious subsurface minerals have been continuously mined illegally in the region of Omu-Aran area in parts of the Nigerian South-western Precambrian Basement Complex. An aeromagnetic data obtained from the Nigerian Geological Survey Agency was analysed to delineate various subsurface geological structures in this area. The subsurface characteristics enrichment of the data was carried out using Fast Fourier Transforms, and the Euler Deconvolution methods that helped in the establishment of the different subsurface magnetic anomalies basement structures emplaced in this part of the Nigerian South-western Precambrian Basement Complex. The study aimed at mapping the main rock types found in the undifferentiated schist that includes some gneiss, schist, quartzite and quartz schist and granite-gneiss in the basement rocks of the area. It also includes delineating, as well as estimating the depths to, the magnetic source of the Ore bodies. Regional-residual separation was applied to the total aeromagnetic data to produce a total magnetic intensity map with the application of Oasis Montaj (2014 software version). Depths to the shallow magnetic anomalies source rock bodies were estimated together with various structural indices that varied between about 0.5SI and 3.0SI at the greatest depth to the shallow anomaly of about 1100m, with the aim of determining the greatest depths approximation for all the subsurface geological structural features in the area.


英文关键词aeromagnetic data magnetic source anomalydepths Precambrian basement complex Nigeria
来源出版物CHIANG MAI JOURNAL OF SCIENCE
ISSN0125-2526
出版年2016
卷号43
期号6
页码1324-1334
出版者CHIANG MAI UNIV
类型Article;Proceedings Paper
语种英语
国家Malaysia
收录类别SCI-E ; CPCI-S
WOS记录号WOS:000395907600012
WOS关键词EULER DECONVOLUTION ; MAGNETIC DATA ; SCHIST BELT ; ANOMALIES ; LINEAMENTS ; SYSTEM ; AREA
WOS类目Multidisciplinary Sciences
WOS研究方向Science & Technology - Other Topics
资源类型会议论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/305247
作者单位Univ Sains Malaysia, Sch Phys, Geophys Unit, George Town 11800, Malaysia
推荐引用方式
GB/T 7714
Kayode, John S.,Nawawi, Mohd,Abdullah, Khiruddin. Structural Analysis of Part of the Nigerian South-western Basement Complex using Aeromagnetic Data[C]:CHIANG MAI UNIV,2016:1324-1334.
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