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III.—The Water Basin of Lough Derg, Ireland

Published online by Cambridge University Press:  01 May 2009

Extract

Some time since, I read before the Geological Society of Glasgow a paper on “The Valley of Loch Lomond,” and pointed out that the deeps and shallows corresponded with, the faults and breaks in the adjoining country. This paper was quoted by His Grace the Duke of Argyll, President of the London Geological Society, in opposition to the view (so ably advocated by Professor Ramsay) that ice has been the principal, if not the only, agent engaged in the formation of such hollows.

Type
Original Articles
Copyright
Copyright © Cambridge University Press 1873

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References

page 489 note 1 Memoirs and Maps, Geological Survey, Sheets 115, 116, 124, and 125.

page 489 note 2 Admiralty Chart, No. 1552, Lough Derg, Ireland.

page 490 note 1 This east and west valley might possibly shift the N.E. and S.W. valley about three miles towards the eastward; but it is more probable that this second nearly north and south portion of the lake basin was excavated along a nearly parallel fault line to that along which the first portion was formed.

page 491 note 1 “On the Surface-Geology of the Basin of the Great Lakes, and the Valley of the Mississippi,” by Prof. Newberry, M.D., U.S. Geologist Ann. Lyceum Nat. Hist., New York, 1869, vol ix. See Geol. Mag., 1870, Vol. VII. p. 227.

page 492 note 1 The Rev. M. H. Close is of opinion that “there never was ‘a glacier’ in the basin of Lough Derg. That basin, however, was no doubt swept by a flow of the general ice-covering of the country.”