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IV.—The River Cefni in Anglesey

Published online by Cambridge University Press:  01 May 2009

Edward Greenly
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Extract

Many years ago, when discussing the origin of the Menai Straits, attention was drawn by Ramsay to the existence of several other valleys running in the same direction, north-east and south-west. Not only is this the case, however, but the valleys of the dominant system that traverses the plateau of Anglesey have the same trend, ridge and trough alternating with wonderful regularity, as far, at any rate, as Llanerchymedd, a distance of some 12 miles from the Straits.

Type
Original Articles
Information
Geological Magazine , Volume 3 , Issue 6 , June 1906 , pp. 262 - 265
Copyright
Copyright © Cambridge University Press 1906

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References

page 263 note 1 Information kindly supplied by Mr. Thomas Prichard, of Llwydiarth Esgob, Anglesey, from the records of the Drainage Commissioners.

page 263 note 2 I am indebted for this measurement to the kindness of Mr. Tobias Clegg, F.G.S., of Llangefni County School, who very ingeniously determined it by means of a kind of extemporized theodolite.

page 264 note 1 It is floored by alluvium, and its real bottom may even be below the level of the rock at the exit.

page 265 note 1 A fault which partly coincides with the course of the Cefni between the town and the marsh does not pass into the Ravine, but somewhat to the eastward.