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On the Neocomian and the Wealden Rocks in the Jura and in England

Published online by Cambridge University Press:  17 March 2016

M. Jules Marcou
M. Jules Marcou*
Affiliation:
Federal Polytechnic School, Zurich
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Extract

In June, 1827, Dr. W. H. Fitton read before the Geological Society of London the following statement:—“It is obvious that, during a period of time sufficient for the accumulation of the Wealden, the deposition of matter in the adjacent seas could not have been inconsiderable; so that we might expect to find, interposed between the strata which then formed the bottom of the sea and the Lower Greensand, a series of beds coeval with the Wealden in point of date, but differing from it in possessing the characters of a marine deposit, and including marine shells and other productions of salt water; with which, near the shore, the productions of the land, or even the freshwater shells of the rivers, might be occasionally intermixed.…. 1st. That the Wealden and its marine equivalent could not both be found in the same place; and consequently (since we have the former in England) that the marine beds of that date are not to be expected generally in this country; 2dly.

Type
Research Article
Information
The Geologist , Volume 2 , Issue 1 , January 1859 , pp. 1 - 8
Copyright
Copyright © Cambridge University Press 1859

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References

page 1 note * See Observations on some of the Strata between the Chalk and Oxford Oolite in the South of England. Transact. Geol. Soc. 2 Ser. vol. iv. p. 329 Google Scholar.

page 2 note * See, for explanation of these terms, Lettres sur les Roches du Jura et leur distribution géographique, dans les deux Hémisphères, par Jules Marcou; Paris, 1857 Google Scholar.

page 5 note * For a more detailed account of the Neocomian Strata, see Sur le Néocomien dans le Jura et son rôle dans la séric stratigraphique, by Marcou, Jules. Genève, 1859 Google Scholar.