Abstract
Four major fracture zones cutting the Atlantic sea floor off the west coast of Africa—St Paul's, Romanche, Chain and Charcot— have been delineated offshore using bathymetrie, seismic, gravity and magnetic data, respectively1. But the extrapolation of these fractures onto the African Continent is uncertain. Here we analyse recently compiled aeromagnetic data2 for the Benue Trough and adjacent areas of Nigeria, and demonstrate the existence of narrow magnetic lineaments parallel to the margins of the Benue Trough, which can be matched with the oceanic fractures. Alkaline ring complexes which predate the opening of the Atlantic Ocean are concentrated along these lineaments, suggesting that they represent pre-existing zones of weakness in the African crust which may have influenced the rifting of the continental margins and the early development of Atlantic fracture zones.
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References
Sibuet, J. & Mascle, J. J. geophys. Res. 83, 3401–3421 (1978).
Ajakaiye, D. E., Hall, D. H. & Miller, T. W. Geophys. J. 83, 503–517 (1985).
Langel, R. A., Phillips, J. D. & Horner, R. J. Geophys. Res. Lett. 9, 269–272 (1982).
Ajayi, C. O. & Ajakaiye, D. E. Tectonophysics 80, 285–303 (1981).
Cratchley, C. R. & Jones, G. P. Overseas Geological Surveys, London (Geophysical Paper No. 1, 1965).
Wright, J. B. Tectonophysics 6, 301–310 (1968).
Burke, K. & Dewey, J. F. Nature 249, 313–315 (1974).
Burke, K. & Whiteman, A. J. in Implications of Continental Drift to the Earth Sciences (eds Tarling, D. A. & Runcorn, S. K.) 735–755 (Academic, London, 1973).
Sykes, L. R. Rev. Geophys. Space Phys. 16, 621–688 (1978).
Benkhelil, J. Geol. Mag. 119, 155–168 (1982).
Ball, E. Tectonophysics 61, 363–379 (1980).
Rahaman, M. A., Van Breemen, O., Bowden, P. & Bennett, J. N. J. Geol. 92, 173–184 (1984).
Morgan, W. J. Nature 230, 42–43 (1971).
Briden, J. C. & Gas, I. G. Nature 248, 650–653 (1974).
Ajakaiye, D. E. & Verheijen, P. J. T. Geophys. Res. Lett. 10, 424–427 (1983).
Barley, P. M. Geology 2, 373–376 (1974).
Harris, N. B. W. Tectonophysics 83, 242–285 (1982).
Black, R., Lameyre, J. & Bonin, B. J. Afr. Earth Sci. 3, 5–6 (1985).
Ajakaiye, D. E. Nature 255, 50–52 (1970).
Marsh, J. S. Earth planet. Sci. Lett. 18, 317–323 (1973).
Ajakaiye, D. E., Hall, D. H. & Millar, T. W. in 27th Int. Geological Congr. Moscow, Abstr. Vol. (1984).
Ajakaiye, D. E., Hall, D. H. & Millar, T. W. J. Afr. Earth Sci. l, 355 (1983).
Bacon, M. & Quaah, A. O. Bull seism. Soc. Am. 71, 771–785 (1981).
Ajakaiye, D. E., Daniyan, M. A. & Ojo, S. B. in 2nd Symp. on Recent Crustal Movements in Africa, Abstr. Vol. (1984).
Neev, D. Tectonophysics 38, T1–T8 (1977).
Neev, D., Hall, J. K. & Saul, J. M. J. geophys. Res. 87, 1015–1030 (1982).
Pichon, X. & Hayes, D. E. J. geophys. Res. 76, 6283–6293 (1971).
Angoran, Y. & Kadio, E. in Int. Symp. on Archean and Early Proterozoic Geologic Evolution and Metallogenesis, Abstr.Vol. (1982).
Haralyi, N. L. E. & Hasui, Y. in Int. Symp. on Archean and Early Proterozoic Geologic Evolution and Metallogenesis, Abstr. Vol. (1982).
Burke, K. G. Nature 222, 655–657 (1969).
Moody, J. D. Tectonophysics 3, 479–522 (1966).
McConnell, R. B. 80, Bull. geol. Soc. Am. 80, 1775–1782 (1969).
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Ajakaiye, D., Hall, D., Millar, T. et al. Aeromagnetic anomalies and tectonic trends in and around the Benue Trough, Nigeria. Nature 319, 582–584 (1986). https://doi.org/10.1038/319582a0
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DOI: https://doi.org/10.1038/319582a0
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