干旱区生态环境知识资源中心(Arid): Enhancement and modelling of aeromagnetic data of some inland basins, southeastern Nigeria

Arid

DOI	10.1016/j.jafrearsci.2019.02.030
	Enhancement and modelling of aeromagnetic data of some inland basins, southeastern Nigeria
	Ekwok, Stephen E.; Akpan, Anthony E.; Ebong, Ebong D.
通讯作者	Ekwok, Stephen E.
来源期刊	JOURNAL OF AFRICAN EARTH SCIENCES
ISSN	1464-343X
EISSN	1879-1956
出版年	2019
卷号	155 页码:43-53
英文摘要	High resolution aeromagnetic data that can be applied in hydrocarbon search, mineral and ores explorations, archaeological investigations, UXO and metal objects detections etc. were employed in this study. The data were used to map the spatial distribution of short and long wavelength magnetic anomalies and thicknesses of sediments in some parts of southeastern Nigeria. Standard data enhancement techniques such as first vertical, second vertical and horizontal derivatives, upward and downward continuations, and depth determination techniques like source parameter imaging (SPI) and modelling using 2D GM-SYS in Oasis Montaj were performed. Results show long wavelength anomalies within the Calabar Flank while Ikom-Mamfe Embayment was dominated by short wavelength anomalies. Depth estimate from SPI revealed a maximum depth of about 6127 m within the Calabar Flank. Additionally, two dimensional (2D) modelling technique show thickness of the range, > 7000 to 5000 m of sediments in the Calabar Flank and Ikom-Mamfe Embayment respectively. The results of the SPI and 2D modelling techniques correlated relatively well in the Calabar Flank. The maps generated after performing the enhancement, validated the surficial regional geology of the study area with defined boundaries between the Cretaceous sediments and the Precambrian basement rocks.
英文关键词	Long wavelength Short wavelength Magnetic anomalies Magnetic enhancement Magnetic modelling Cretaceous sediments
类型	Review
语种	英语
国家	Nigeria
收录类别	SCI-E
WOS记录号	WOS:000470042900004
WOS关键词	SQUARES MINIMIZATION APPROACH ; BENUE-TROUGH ; ORGANIC GEOCHEMISTRY ; MAGNETIC-ANOMALIES ; CRETACEOUS STRATA ; GRAVITY-FIELD ; CALABAR FLANK ; ORIGIN ; DEPTH ; MINERALIZATION
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216618
作者单位	Univ Calabar, Phys Dept, Appl Geophys Programme, PMB 1115, Calabar, Cross River Sta, Nigeria
推荐引用方式 GB/T 7714	Ekwok, Stephen E.,Akpan, Anthony E.,Ebong, Ebong D.. Enhancement and modelling of aeromagnetic data of some inland basins, southeastern Nigeria[J],2019,155:43-53.
APA	Ekwok, Stephen E.,Akpan, Anthony E.,&Ebong, Ebong D..(2019).Enhancement and modelling of aeromagnetic data of some inland basins, southeastern Nigeria.JOURNAL OF AFRICAN EARTH SCIENCES,155,43-53.
MLA	Ekwok, Stephen E.,et al."Enhancement and modelling of aeromagnetic data of some inland basins, southeastern Nigeria".JOURNAL OF AFRICAN EARTH SCIENCES 155(2019):43-53.