Wamba login

11.08.2018 1 Comments

Two depth source models were established using depth values determined by Peter's half-slope method; the deeper sources ranged from 0. Blackwell Science, Oxford, Pp. Magnetic field intensity usually increases from the south towards the northern part of the area; such variation is a function of the rock types. Interpretation theory in Applied Geophysics. Introduction to geophysical exploration. Several articles have been published on the Nigerian basement complex's structural and tectonic framework, based on analysing aeromagnetic data Ajakaiye et al. The depth values obtained for the study area also agreed with those computed from aeromagnetic data over some parts of the middle Benue Trough by Nur et al. Table 1 above shows the magnetic source bodies' depth estimates and possibly sediment thickness throughout the study area's sedimentary part. The present study was focused on analysing and interpreting aeromagnetic data over Wamba and its adjoining areas.

Wamba login


Aeromagnetic anomalies and tectonic trends in and around the Benue Trough Nigeria. A structural lineament map of the area Figure 5 was produced using Dobrin and Savit's aforementioned assertions together with Figure 4. The younger granites in the study area are Jurassic Ma in age and are high-level, anorogenic granites; they mainly consist of microgranites and biotite granites. Petrographic composition and depositional environment of Cretaceous coals and coal measures in the Middle Benue Trough of Nigeria. The Leading Edge, Vol. Furthermore, the residual anomaly data obtained was subsequently gridded using the minimum curvature method and the resulting grid was contoured at 20nT intervals to produce the residual aeromagnetic intensity contour map Figure 3. Nigerian Journal of Physics, Vol. Field measurements in descriptions of igneous and metamorphic rocks. Table 1 above shows the magnetic source bodies' depth estimates and possibly sediment thickness throughout the study area's sedimentary part. Sediment thickness is very important in any sedimentary basin regarding to hydrocarbon formation. Physics and Chemistry of the Earth, Part A: Estimating depth Peter's half-slope method was used to estimate the depth to magnetic source body. Acknowledgement The authors are grateful to the two anonymous reviewers for their useful suggestions and criticism which have greatly improved the revised manuscript. Five profiles were taken across the sedimentary part of the residual aeromagnetic intensity contour map of the area to estimate the depth to magnetic bodies and possibly sediment thickness , namely A-A1, B-B1, C-C1, D-D1 and E-E1 Figure 8. Spectral analysis of aeromagnetic data over the Middle Benue Trough, Nigeria. The structural lineaments in the area were thus mainly faults and fractures, as well as veins and foliations. Africa Atlases; Atlas of Nigeria. Deeper sources varied from 0. The depth values obtained for the study area also agreed with those computed from aeromagnetic data over some parts of the middle Benue Trough by Nur et al. Magnetic and mineralogical studies to characterise oil reservoirs in Venezuela. Blackwell Science, Oxford, pp. The magnetic anomaly contours in the southern portion were smooth and characterised by highly negative, long wavelength, magnetic anomalies having E-W and NE-SW direction trends Benue Trough trend , while the magnetic anomaly contours in the northern portion had complex, positive, short wavelength, magnetic anomaly variations trending NESW and NW-SE. The Geology of Jos Plateau. The comparative study of the geological map Figure 1 and generated structural lineament map Figure 5 of Wamba and its adjoining area showed that structural lineaments were more concentrated in the Pre-Cambrian basement rocks migmatites, gneisses and older granites and Jurassic younger granites than on the Cretaceous sedimentary rocks Awgu shale and Lafia formation. 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.

Wamba login


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  1. Elementary Gravity and Magnetics for Geologists and Seismologists: The comparative study of the geological map Figure 1 and generated structural lineament map Figure 5 of Wamba and its adjoining area showed that structural lineaments were more concentrated in the Pre-Cambrian basement rocks migmatites, gneisses and older granites and Jurassic younger granites than on the Cretaceous sedimentary rocks Awgu shale and Lafia formation.

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