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Analysis of aeromagnetic data over wamba and its adjoining areas in north-central nigeria

Anudu, G K and Onuba, L N and Onwuemesi, A G and Ikpokonte, A E (2012) Analysis of aeromagnetic data over wamba and its adjoining areas in north-central nigeria. Earth Sciences Research Journal; Vol. 16, núm. 1 (2012); 25-33 Earth Sciences Research Journal; Vol. 16, núm. 1 (2012); 25-33 2339-3459 1794-6190 .

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URL oficial: http://revistas.unal.edu.co/index.php/esrj/article...

Resumen

An aeromagnetic intensity contour map of Wamba was acquired, digitised and analysed. The study was aimed at mapping metalliferous mineral deposits in basement rocks, delineating structural lineaments and their trends as well as estimating the depth to magnetic source bodies. Regional- residual separation was applied to a total aeromagnetic intensity contour map to produce a residual aeromagnetic intensity contour map. The rose diagram of the orientations or azimuth direction of the structural lineaments delineated on the maps depicted major trends being NE-SW, NW-SE and NNESSW (Pan-African trends) with minor NNW-SSE and E-W trends (pre-Pan-African trends). Depths to the magnetic source bodies were estimated using Peter's (half-slope) method, indicating two depth source models. The deeper sources ranged from 0.88km to 3.15km and had -32nT to -225nT magnetic intensity, whereas the shallower sources ranged from 0.23km to 0.76km and had -10nT to 20nT magnetic intensity. The deeper sources were most likely due to intra-basement basic intrusive bodies underlying the sediment-covered marginal areas of the Benue Trough. The sedimentary cover in the area was generally low and therefore not likely to favour hydrocarbon generation.

Tipo de documento:Artículo - Article
Palabras clave:Wamba, aeromagnetic, lineaments, magnetic source, Peter's method.
Unidad administrativa:Revistas electrónicas UN > Earth Sciences Research Journal
Código ID:33892
Enviado por : Dirección Nacional de Bibliotecas STECNICO
Enviado el día :01 Julio 2014 11:19
Ultima modificación:06 Junio 2018 10:57
Ultima modificación:06 Junio 2018 10:57
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