Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s12517-017-3250-3 |
Exploration for iron ore in Agbado-Okudu, Kogi State, Nigeria | |
Olasunkanmi, Nurudeen Kolawole1; Bamigboye, Olufemi S.2; Aina, Adebayo1 | |
通讯作者 | Olasunkanmi, Nurudeen Kolawole |
来源期刊 | ARABIAN JOURNAL OF GEOSCIENCES
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ISSN | 1866-7511 |
EISSN | 1866-7538 |
出版年 | 2017 |
卷号 | 10期号:24 |
英文摘要 | This report details the result of geophysical exploration for iron ore; which involved vertical magnetic intensity (AZ) and gravity measurements, to delineate the geometry and depth extent of the deposit and acquiring quantitative and qualitative information for pre-drilling purposes in Agbado-Okudu. It is located about 3 km from Jakura along Lokoja-Jakura marble quarry and within low latitude precambrian basement complex district of Kogi State, Nigeria. A total of 517 magnetic measurement points along 16 traverses and 330 gravity reading along 11 profiles on the deposit in northeast-southwest azimuth were undertaken. The magnetic and gravity data enhancement involved linear regression curve fitting and fast Fourier transform, which were used to construct residual magnetic (RM) and gravity (RG) anomalies, analytic signal amplitude, Euler deconvolution at varying spectral indices (SI), power spectrum, and source parameter image (SPI), using the submenu of Geosoft Oasis Montaj software. Interpretation of the RBI and RG anomalies revealed a primary causative body which perfectly correlates the positive anomalies and iron ore deposit, in form of a horizontal or gently dipping dyke with strike length of 600 m and average width of 110-130 m, within the gneiss complex in the north and trending south of the area. A secondary causative body associated with the negative anomalies and inferred as a vertical/near vertical thin sheet striking northeast-southwest coincided with the granitic and quartzitic intrusion. The NW-SE and E-W lineament trend conformed Kibarian and Liberian orogeny cycles of generally known structural trends in Nigeria, which shows that the iron ore deposit is structurally controlled. Depths to sources were estimated within range <= 2-24 m and 37.5-60 m, regarded as shallow and relatively deep depths, respectively. Ten vertical boreholes ranging in depth between 50 and 100 m are recommended, five of which require a priority attention to ascertain the thickness of the primary causative body. |
英文关键词 | Iron ore deposit Magnetic and gravity anomalies Primary and secondary causative bodies Dyke Lineament Vertical boreholes |
类型 | Article |
语种 | 英语 |
国家 | Nigeria |
收录类别 | SCI-E |
WOS记录号 | WOS:000419041400018 |
WOS关键词 | MAGNETIC DATA ; AEROMAGNETIC DATA |
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/2XILL650/197512 |
作者单位 | 1.Kwara State Univ, Dept Phys & Mat Sci, Malete, Kwara State, Nigeria; 2.Kwara State Univ, Dept Geol & Mineral Sci, Malete, Kwara State, Nigeria |
推荐引用方式 GB/T 7714 | Olasunkanmi, Nurudeen Kolawole,Bamigboye, Olufemi S.,Aina, Adebayo. Exploration for iron ore in Agbado-Okudu, Kogi State, Nigeria[J],2017,10(24). |
APA | Olasunkanmi, Nurudeen Kolawole,Bamigboye, Olufemi S.,&Aina, Adebayo.(2017).Exploration for iron ore in Agbado-Okudu, Kogi State, Nigeria.ARABIAN JOURNAL OF GEOSCIENCES,10(24). |
MLA | Olasunkanmi, Nurudeen Kolawole,et al."Exploration for iron ore in Agbado-Okudu, Kogi State, Nigeria".ARABIAN JOURNAL OF GEOSCIENCES 10.24(2017). |
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