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II.—The Glacial Geology of Central Wales

Published online by Cambridge University Press:  01 May 2009

Walter Keeping
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Extract

In Cardiganshire and the neighbouring counties of Central Wales there are abundant traces of the action of the great accumulations of ice and snow which covered all the mountains of Britain in the Glacial period. in the valleys lie thick sheets of Till and morainic formations, the hill sides are rounded and polished by the friction of the moving ice, and erratic blocks are strewn in abundance over hill and valley throughout the district.

Type
Original Articles
Information
Geological Magazine , Volume 9 , Issue 6 , June 1882 , pp. 251 - 257
Copyright
Copyright © Cambridge University Press 1882

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References

page 251 note 1 Read at the Meeting of the British Association, Section C, at York, 1881.

page 251 note 2 Quart. Journ. Geol. Soc. 1881, p. 141.Google Scholar

page 254 note 1 See a paper on “Geology of Central Wales,” Q.J.G.S. 1881, p. 158.Google Scholar

page 255 note 1 The common belief of the people is that the lakes are very deep, but all that I examined were shallow, the Teifi Pools and Llyn Gynon being from 7 to 33 feet, and Llyn Gwyddior, Llyn Bugeilyn, and Llyn Fyrddyn Fawr about 33 feet. Some of these measurements of depths were obtained by swimming across the lakes, and the rest by waiting till they were frozen over, when the ice was broken through with the hammer, and a line let down.

page 255 note 2 Aberystwyth now obtains its water from this lake, and I am indebted to the engineer, Mr. Stooke, for information kindly sent me about the slopes of the lake bed, and the section of the moraine at its base.