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VI.—On the Occurrence of Submerged Forests in certain Inland Lakes in Donegal

Published online by Cambridge University Press:  01 May 2009

W. B. Weight
Affiliation:
Geological Survey of Ireland.

Extract

For many years past the Swedish geologists have been directing the attention of the scientific world to the curious phenomenon of the occurrence of submerged forests in certain of their inland lakes. In our own country such evidences of change of level are a familiar sight along our sea-coasts, and, if we bear in mind the extreme instability of the sea-level, their presence is little to be wondered at. In all bodies of water which hare no outlet—and the sea is only the largest of these—the surface-level is determined by the balance between supply and evaporation, and oscillation is inevitable. In the case of freshwater lakes, however, the level is determined within small limits by the overflow, and the occurrence of tree stumps in the position of growth beneath their waters presents therefore a problem of considerable interest.

Type
Original Articles
Copyright
Copyright © Cambridge University Press 1912

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References

page 115 note 1 Butger Sernander, “Om förekomsten af subfossila stubbar på Svenska insjöars botten”: Bot. Not., 1890. German translation in Bot. Centralbl., Cassel, Bd. xlv, 1891.Google Scholar

Gavelin, Arel, “Studier öfver de postglaciala nivå- och klimatförändringana på norra delen af det Småländska höglandet”: Sveriges. Geol. Unders., ser. C, No. 204 (=Årsbok i, No. 1), 1907.Google Scholar

Sernander, Rutger, “Hornborgasjöns nivåförändringar”: Geol. Fören. i Stockholm Förh., Bd. xxx, p. 70, 1908.Google Scholar

— “Hornborgasjöns nivåförändringar och våra högmossars bildningssätt”: ibid., Bd. xxxi, 1909.

“Sjön Hedervikens vegetation och utveklings historia”: Sv. Bot. Tidskr., Stockholm, Bd. iv, 1910.Google Scholar

von Post, L., “Skarbysjö-komplexet och dess dräneringsområdes postglaciala utvekling”: Geol. Fören. i Stockholm Förh., Bd. xxxi, 1909.Google Scholar

Sernander, Rutger, “Die schwedischen Torfmoore als Zengen postglazialer Klimaschwankungen.” Die Veränderungen des Klimas: Geol. Congress, Stockholm, 1911, p. 197.Google Scholar

Gunnar Andersson, “Swedish Climate in the Late Quaternary Period”: ibid., p. 247.

page 116 note 1 There is a submerged forest in Loch Fada in the Island of Colonsay, off the west coast of Scotland, to which attention was first called by Symington Grieve. The outlet of this lake is, however, through a peat moss; see Wright, W. B. and Bailey, E. B., Geology of Colonsay and Oronsay (Mem. Geol. Surv. Great Britain, 1911).Google Scholar

page 118 note 1 In the case of excavations ever being made with a view to further investigating the oscillations of level and the sequence of plant growth, I would suggest the sandy shore in the north-west bay of this lake as a suitable place.