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The Formation of Inselberge

Published online by Cambridge University Press:  01 May 2009

A. D. N. Bain
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Extract

1. Inselberge, which form striking features in the landscape of most of tropical Africa, have attracted the attention of many writers, and various theories have been advanced to explain their formation. Passarge (I) considered that desert conditions are the most favourable for their maintenance, as wind scour was believed to be a potent factor in the deepening of the hollows between them. Bornhardt (2) and Falconer (3) suggest that they may result from repeated cycles of pluvial erosion, due to normal crustal oscillations, and with this view Theile and Wilson agree (4). From a study of the inselberge in Nigeria, the writer will endeavour to show that the climate of the Sudan, with its alternate wet and dry seasons, is favourable to the production of inselberg landscape.

Type
Research Article
Information
Geological Magazine , Volume 60 , Issue 3 , March 1923 , pp. 97 - 101
Copyright
Copyright © Cambridge University Press 1923

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References

References and Bibliography

(1) Passarge, S., (a) Adamaua, 1895;CrossRefGoogle Scholar
(b) Die Kalahari, Berlin, 1904;Google Scholar
(c) “Üiber Rumpfflachen und Inselberge,” Zeitschr. d. Deutsch. Geol. Gesellsch., vol. lvi, 1904, Prot., pp. 193–209;Google Scholar
“Die Inselberglandschaft in Tropischer Afrika,” Nat. Wochenschr., N.s. iii, 1904, pp. 657–65.Google Scholar
(2) Bornhardt, W., Die Ober flachengestaltung und Geologie Deutsch-Ost Afrikas, vol. vii, Berlin, 1910, pp. 34–9.Google Scholar
(3) Falconer, J. D., Report Brit. Assoc. (Dundee, 1912), 1913, p. 476. See also Geol. and Geogr. of Northern Nigeria.Google Scholar
(4) Theile, E. O. and Wilson, R. C., Geogr. Journ., vol. xlv, 1915, pp. 27, 30.Google Scholar
(5) Geol. Surv. of Nigeria, Bulletin No. 2, pp. 44–6.Google Scholar
(6) Geol. Surv. of Nigeria, p. 32 et seq.Google Scholar
(7) Holmes, A., Q.J.G.S., vol. lxxiv, 1918, pp. 89–93.Google Scholar
(8) Falconer, J. D., Geol. Surv. of Nigera, Bulletin No. 1, 1921.Google Scholar
(9) Russ, W., Geol. Surv. of Nigeria, Bulletin No. 4 (in the Press).Google Scholar
(a) Wagner, P. A., Trans. Geol. Soc. S. Africa, vol. xv, pp. 124–39, 1913.Google Scholar
(b) Trans. Geol. Soc. S. Africa, vol. xiii, p. 167, 1910. The hills described as “inselberge” in paper (b) do not seem to be of the type to which the term is usually applied.Google Scholar
Davis, W. M., Journ. Geol. Chicago, vol. xiii, 1905, p. 381.CrossRefGoogle Scholar
Holmes, A. and Wray, A., Geogr. Journ., vol. xiii, 1913, p. 146.Google Scholar