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V.—Glacial Drift of the Central Part of the Lake District, up to 2800 feet above the Sea

Published online by Cambridge University Press:  01 May 2009

Extract

During five and a half weeks' examination and study of the glaciated rock-surfaces and drifts of the south-central part of the Lake District, in June and July last, I was fortunate in meeting with many fresh and clear sections in diggings for house sites, drains, gravel-pits, tracks of unusually large rain-torrents, etc., which enabled me on some points to arrive at a more satisfactory classification of the drifts of the country than I had previously succeeded in devising.

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Original Articles
Copyright
Copyright © Cambridge University Press 1872

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References

page 400 note 1 I found very distinct striæ pointing N.N.W. at a point more than 1600 feet above the sea on this ridge. Lower down, the direction of the rock-smoothing and striæ crosses the outlets of Easdale and Blind Tarns.

page 400 note 2 This ice-stream must have so smoothed and rounded the cliffs and rocky projections as to prevent their shedding much scree-matter for a long time afterwards, and if to this consideration we add the possible disappearance of glaciers from the larger valleys soon after the ice-sheet vanished from the immediately surrounding plains (for even the inner ends of these valleys often lie lower than the plains), we shall see reason for expecting to find comparatively little subaërial moraine-matter represented among the drifts of the Lake District.

page 400 note 3 In some parts of the Lake District where the smaller stones are fine-grained and not very hard, the proportion exhibiting scratches is greater, but even then the stones are scarcely ever much flattened or regularly grooved.

page 402 note l I have examined about twenty sections of these pinnel hillocks, the two most complete being near Elterwater Village, and Dunmail Raise Cottage.

page 402 note 2 This débris has partly determined the shape of the smaller and less regular hillocks.

page 402 note 3 In some instances large surface blocks, as well as the smaller boulders imbedded in the underlying drift, must have been floated to great distances from the Lake District.