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On Cycles of Sedimentation in the Eocene Strata of the Anglo-Franco-Belgian Basin1

Published online by Cambridge University Press:  01 May 2009

L. Dudley Stamp
L. Dudley Stamp
Affiliation:
King's College, London
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Extract

The Term “Cycle of Sedimentation” or “Cycle of Deposition” is not nearly so familiar in England as it is on the Continent. Whilst the teaching of the general principles forms part of most courses in geology, the application of these principles to actual successions in this country has been somewhat neglected. Attention has recently been drawn to the seasonal or rhythmic changes seen in some sediments, and to avoid confusion it is desirable to outline what is meant by the expression “Cycle of Sedimentation”.

Type
Original Articles
Information
Geological Magazine , Volume 58 , Issue 3 , March 1921 , pp. 108 - 114
Copyright
Copyright © Cambridge University Press 1921

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Footnotes

1

Paper read before Section C (Geology) of the British Association for the Advancement of Science, Cardiff Meeting, August, 1920.

References

page 109 note 1 A “ravinement” may be defined as an irregular junction which marks a break in sedimentation. The break may be due to a period of denudation consequent on movements of masses of water, but not necessarily accompanied by earth-movements. Although one of the commonest of geological phenomena, there is no English word which expresses quite so aptly the relationship. One may say that there is an “unconformity” at the base of the marine formation, but that term rather suggests discordance of stratification and earth-movements of a more pronounced character. The term “plane of erosion” is bad, since the basal conglomerate tends to occupy an irregular or hummocky surface of the underlying deposits rather than a plane surface. “Non-sequence” is most frequently applied to a break in sedimentation which can be detected only by a study of successive faunas.

page 111 note 1 Watts, , “Geology as Geographical Evolution “: Quart. Journ. Geol. Soc., vol. lxvii, 1911, p. lxii.Google Scholar

page 111 note 2 “Légende de la Carte géologique de Belgique… à l'Echelle du 40,000e”, 1891, etc.: Review in Ann. Soc. géol. Belg., vol. xix, 1891, p. 107.Google Scholar

page 112 note 1 Leriche, , “Observations sur la Classification des assises paléocènes et éocènes du Bassin de Paris”: Ann. Soc. géol. Nord, vol. xxxiv, 1905, p. 383.Google Scholar

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page 113 note 1 Leriche, , Ann. Soc. géol. Nord, vol. xxxii, 1903, pp. 120, 239; vol. xxxviii, 1909, pp. 74,421. C.r. Ass. Franç;. Avan. Sci., Cherbourg, 1905, p. 394Google Scholar; ibid., Lille, 1909, p. 408. Bull. Soc. géol. France, s´r. IV, vol. xii, 1912, p. 690 et seq.

page 113 note 2 Whitaker, , Geology of the London Basin (Mem. Geol Surv.), vol. iv, 1872, p. 170, etc.Google Scholar

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