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III.—The Origin of Cretaceous Flint

Published online by Cambridge University Press:  01 May 2009

W. Alfred Richardson
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Extract

It will be recalled that to the list of theories relating to the origin of flint Liesegang has added another, namely, that the flint is due to the rhythmic precipitation of a silica solution diffusing through the Chalk. Cole in an admirable essay has made this view accessible to English readers, and at the same time somewhat expanded the original suggestion. Yet little by way of evidence is offered beyond a certain plausibility in the idea, and its undoubted competence to explain better than any other hypothesis yet suggested the remarkably regular recurrence of flint lines. When reading over the chief Cretaceous literature with this problem in mind, there seemed to me to be a not inconsiderable body of fact lending support to this view. Accordingly the object of this paper is to examine existing data in the light of Liesegang's suggestion in order to see whether or not it may be regarded as a reasonable working hypothesis.

Type
Original Articles
Information
Geological Magazine , Volume 6 , Issue 12 , December 1919 , pp. 535 - 547
Copyright
Copyright © Cambridge University Press 1919

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References

page 535 note 1 Liesegang, R., Geologische Diffusionen, Dresden and Leipzig, 1913, p. 126.Google Scholar

page 535 note 2 Cole, G. A. J., Geol. Mag., 1917, pp. 64–8.CrossRefGoogle Scholar

page 536 note 1 Bulman, G. W., Sci. Prog., No. 41, 1916, p. 154.Google Scholar

page 536 note 2 Tarr, W. A., Amer. Journ. Sci., ser. iv, vol. xliv, p. 428, 1917.Google Scholar

page 536 note 3 Van Tuyl, F. M., Amer. Journ. Sci., ser. iv, vol. xlv, p. 449, 1918.CrossRefGoogle Scholar

page 536 note 4 Hill, W., Proc. Geol. Assoc., vol. xxii, p. 62, 1911.Google Scholar

page 536 note 5 Rowe, A. D. and Sherborn, C. D., Proc. Geol. Assoc., vol. xvi, p. 170, 1900Google Scholar. Sollas, W. J., The Age of the Earth, London, 1905, p. 135.Google Scholar

page 536 note 6 Murray, J. and Hjort, J., Depths of the Ocean, London, 1912, pp. 183–5.Google Scholar

page 536 note 7 See also Ray, E. Lankester and others, discussion in Nature, 1917, reprinted in Trans. Geol. Physics Soc., 1917.Google Scholar

page 537 note 1 In what follows numerical data relating to the Chalk, unless otherwise stated, have been obtained from Jukes-Browne, A. J., Cretaceous Rocks of Britain, Mem. Geol. Surv.; and from the papers on the White Chalk of the English Coast in the Proc. Geol. Assoc. (1899–1903), by Rowe, A. R. and Sherborn, C. D..Google Scholar

page 537 note 2 Moore, B., Trans. Geol. Physics Soc., 1917, p. 1.Google Scholar

page 537 note 3 Sollas, W. J., The Age of the Earth, London, 1905, pp. 132–65.Google Scholar

page 537 note 4 Jukes-Browne, A. J., Geol. Mag., 1893, p. 541.Google Scholar

page 539 note 1 Mortimer, R., Proc. Geol. Assoc., vol. xxi, p. 96, 1910.Google Scholar

page 539 note 2 Sollas, W. J., The Age of the Earth, London, 1905, p. 147.Google Scholar

page 539 note 3 Ibid., p. 160.

page 539 note 4 Murray, J. and Hjort, J., loc. cit., pp. 183–5.Google Scholar

page 540 note 1 Rowe, A. R. and Sherborn, C. D., Proc. Geol. Assoc., vol. xvii, p. 229Google Scholar. Jukes-Browne, A. J., Geol. Mag., 1893, p. 317.Google Scholar

page 540 note 2 Howe, J. A., Geology of Building Stones, London, 1910, p. 259.Google Scholar

page 540 note 3 G. A. J. Cole, loc. cit.

page 540 note 4 For a simple and clear account of precipitation in gels see Hatschek, E., Introduction to the Physics and Chemistry of Colloids, 2nd ed., London, 1916.Google Scholar

page 540 note 5 R. Liesegang, loc. cit., chap. x.

page 540 note 1 Stansfield, J., Amer. Journ. Sci., ser. iv, vol. xliii, p. 1.Google Scholar

page 542 note 1 South Wales Coalfield (Mem. Geol. Surv.), pt. viii, p. 113, 1907.Google Scholar