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II.—On the probable Glacial Origin of certain Phenomena of Denudation

Published online by Cambridge University Press:  01 May 2009

O. Fisher
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Extract

The pages of the Geological Magazine have lately contained some interesting articles on denudation. I wish to add some further remarks on the subject, which I think will, if duly considered, add important elements to the discussion of that problem.

Type
Original Articles
Information
Geological Magazine , Volume 3 , Issue 29 , November 1866 , pp. 483 - 487
Copyright
Copyright © Cambridge University Press 1866

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References

page 483 note 1 Quart. Jour. Geol. Soc., Vol. xxi. p. 463.Google Scholar

page 483 note 2 Geol. Mag. Vol. III. p. 435.Google Scholar

page 483 note 3 An excellent exhibition of the trail, under this aspect, will be found in the brick-pit at Uphall, near Ilford, the same pit from which came the head and tusks of Elephas primigenius in the British Museum. Here I saw from the trail an angular block of grey weather sandstone, weighing about twenty-five pounds.

page 484 note 1 Geological Magazine, Vol. II., p. 473.Google Scholar

page 484 note 2 Juke's School Manual (1863), p. 326.Google Scholar

page 484 note 3 Geological Magazine, Vol. II., p. 440.Google Scholar

page 485 note 1 Reader, 04 25, 1865.Google Scholar

page 485 note 2 Quart. Journ. Geol. Soc., Vol. xxi., p. 166.Google Scholar

page 486 note 1 An excellent illustration of the effect of the comparative hardness of material, in determining the form of the ground, may be noticed in the neighbourhood of Cromer. The landscape suddenly changes from one of a rather monotonous character to one of rapidly varying hill and dale, on account of the extremely irregular collocation of masses of clay, chalk, and gravel, among the glacial deposits of that district.

page 486 note 2 The workmen at Ilford told me that the furrows all ran nearly in the same direction, which was one inclined at an angle of about 46° to the River-valley adjoining.

page 487 note 1 Possibly Norfolk, from its situation, may have been colder than other parts of England, being in the neighbourhood of an arctic current; and its valleys may have been filled by ice while, in other places, alluvial beds were in course of formation.