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Eocene Cycles of Sedimentation

Published online by Cambridge University Press:  01 May 2009

L. Dudley Stamp
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Extract

It must inevitably happen sometimes that an author does not quite convey to his readers the whole of his own conception of a subject. It may be perhaps that certain objects in his mental picture are to him so obvious as to be unworthy of emphasis, and he is apt to forget that to his readers no part of the picture is, in the first instance, obvious. From the recent paper by Messrs. A. K. Wells and S. W. Wooldridge (“The Mechanism of Sedimentation Cycles”, Geol. Mag., Vol. LX, December, 1923, pp. 545–50), it is evident that I have failed to convey, to them at least, the whole of my conception of the Anglo-Franco-Belgian Basin. I apologize, therefore, to readers of my Introduction to Stratigraphy for any lack of clarity, and I should like to thank Mr. Wells and Mr. Wooldridge for bringing the matter into the light of day and allowing me an opportunity of stating very simply my ideas, all of them already published, on the geography of the Anglo-Franco-Belgian Basin in Eocene times. Perhaps had my critics, before rushing into print, read pages 278–9 of my book as well as page 267, the occasion would never have occurred.

Type
Original Articles
Information
Geological Magazine , Volume 61 , Issue 3 , March 1924 , pp. 98 - 102
Copyright
Copyright © Cambridge University Press 1924

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References

page 98 note 1 An Introduction to Stratigraphy, p. 87, fig. 16.Google Scholar

page 98 note 2 Ibid., p. 116 and fig. 31, Proc. Geol. Assoc., vol. xxxiii, 1922, p. 4 (Belgium).

page 98 note 3 Ibid., pp. 130–3.

page 98 note 4 Ibid., pp. 190–2.

page 98 note 5 Ibid., pp. 240, 243, 251.

page 98 note 6 Geol. Mag., Vol. LIX, 1922, pp. 481–501.Google Scholar

page 99 note 1 Proc. Geol. Assoc., vol. xxxii, 1921, pp. 57–108. For some extraordinary reason this paper, which contains most of the detailed work on which the broader conclusions were based, is not even mentioned by my critics.Google Scholar

page 99 note 2 p. 100.

page 99 note 3 p. 99.

page 99 note 4 Introduction to Stratigraphy, p. 267.Google Scholar

page 100 note 1 Since the north-eastern limit is unknown.

page 100 note 2 Without reference to charts, I believe an elevation of less than 50 feet across the Sound and Belts would he sufficient. I considered it superfluous to remark that disturbances such as would produce a great anticlinal flexure in the sea-floor could scarcely be expected to arise without causing minor adjustments in surrounding regions, of which an elevation of 50 feet in one part is not an extravagant demand. In writing “enclosed sea”, I did not mean necessarily only seas which are absolutely cut off. In this case there are no such things as enclosed seas—they are all lakes.

page 101 note 1 Proc. Geol. Assoc., vol. xxxiv, 1923, p. 318.Google Scholar

page 101 note 2 Ibid., vol. xxxiii, 1922, p. 322

page 102 note 1 These conditions are set out in detail in my Y presian paper (Proc. Geol. Assoc., vol. xxxii, 1921, p. 71) where I definitely associate the sinking of the London area with the uprise of the Weald.Google Scholar

page 102 note 2 Proc. Geol. Assoc., vol. xxxii, 1921, pp. 71–3. I have purposely refrained from mentioning here, or elsewhere, anything of the ridge (now marked by the Chiltern Hills, etc.) which bounds the Anglo-Gallic Basin on the north and whose rise was probably intermittent and gradual like that of the Weald.Google Scholar