Aeromagnetic anomalies and tectonic trends in and around the Benue Trough, Nigeria

Ajakaiye, D.E.; Hall, D. H.; Millar, Tom; Verheijen, P.J.T.; Awad, Morad; Ojo, S.B.

doi:10.1038/319582a0

Cited by 56 publications

(21 citation statements)

References 23 publications

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“…The sources of seismicity in Nigeria include inhomogeneities and zones of weakness in the crust created by the various episodes of magmatic intrusions and other tectonic activities (Eze et al 2011). The possible mechanism for Nigeria's seismicity have been attributed to the locations of earth movements associated with NE-SW trending fracture and zones of weakness extending from the Atlantic Ocean into the country (Ajakaiye et al 1986, Ajakaiye et al 1987, Eze et al 2011. We observe a concentration of seismic activity points close to the study region in the Ijebu ode and Ibadan locations (Figure 1).…”

Section: Discussionmentioning

confidence: 99%

Spectral analysis of aeromagnetic data for geothermal energy investigation of Ikogosi Warm Spring - Ekiti State, southwestern Nigeria

et al. 2014

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Background: Aeromagnetic data of the Ikogosi warm spring region was used to calculate the basal depth of the magnetic layer (Curie point depth) in the region. The warm spring issues from a crossing of fractures from a metasedimentary suite of Effon Psammite formation which form part of the Precambrian basement complex in Nigeria. Method: The adopted computational method transforms the spatial data into the frequency domain and provides a relationship between radially average power spectrum of the magnetic anomalies and the depths to the respective sources. Heat flow density and equivalent depth extent of heat production from radioactive isotopes in the area were also evaluated. Results: The average Curie point depth for the Ikogosi warm spring area is 15.1 ± 0.6 km and centres on the host quartzite rock unit. The computed equivalent depth extent of heat production provides a depth value (14.5 km) which falls within the Curie point depth margin and could indicate change in mineralogy. The low Curie point depth observed at the warm spring source is attributed to magmatic intrusions at depth. This is also evident from the visible older granite intrusion at Ikere -Ado-Ekiti area, with shallow Curie depths (12.37 ± 0.73 km). Conclusions: Results indicate that the area is promising for further geothermal explorations.

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Section: Discussionmentioning

confidence: 99%

Spectral analysis of aeromagnetic data for geothermal energy investigation of Ikogosi Warm Spring - Ekiti State, southwestern Nigeria

et al. 2014

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“…It is pertinent to mention that the trends of the inferred lineaments in this study correlate with the structural trends earlier inferred in the Northern Nigerian basement complex region, Nigerian Younger Granite province and the Benue trough (e.g. [8], [9], [12], [19], [20]). …”

Section: Resultsmentioning

confidence: 91%

“…Previous studies in the Nigerian basement complex region, using aeromagnetic data (e.g. [8], [9]) inferred presence of subtle regional NE-SW and ENE-WSW trending lineaments which were interpreted as possible Continental extension of the four Atlantic fracture zones (i.e. St Paul's, Romanche, Chain and Charcot) abutting the West African coast into the Nigerian basement complex.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Surface and Magnetic Lineaments in and Around Wase Area of Northern Nigeria

Sanusi¹

2014

IOSR JAGG

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“…The trends of these anomalies seem to correlate with the general structural trends in the adjacent Benue trough and the Bida basin (Ajakaiye et al, 1986;Onyedim et al, 2009). The total-field magnetic intensity (TMI) values range from 31950 nT to 33050 nT while the residual magnetic intensities vary from -1540 nT to -734 nT.…”

Section: Resultsmentioning

confidence: 99%

Angular Spectral Analysis and Lowpass Filtering of Aeromagnetic Data Over Western Parts of Bornu Basin of Nigeria

Sanusi¹,

Likkason²

2017

Nig J Bas App Sci

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Total-field aeromagnetic data over the western half of the Bornu basin and its surrounding areas were analyzed using angular spectral analysis, upward continuation and lowpass filtering techniques. Results revealed several angular spectral peaks at various angular orientations. The angular orientations correlated with the trends of the deep-seated NNW-SSE, NW-SE, NNE-SSW and NE-SW regional lineaments inferred from the upward continuation and lowpass filtering techniques. Superposition of the inferred regional lineaments on the surface geology suggests that the inferred lineaments exerted structural control on the magmatism, sedimentation pattern and the flow pattern of the Gongola river in the study area.

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Aeromagnetic anomalies and tectonic trends in and around the Benue Trough, Nigeria

Cited by 56 publications

References 23 publications

Spectral analysis of aeromagnetic data for geothermal energy investigation of Ikogosi Warm Spring - Ekiti State, southwestern Nigeria

Spectral analysis of aeromagnetic data for geothermal energy investigation of Ikogosi Warm Spring - Ekiti State, southwestern Nigeria

Analysis of Surface and Magnetic Lineaments in and Around Wase Area of Northern Nigeria

Angular Spectral Analysis and Lowpass Filtering of Aeromagnetic Data Over Western Parts of Bornu Basin of Nigeria

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