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VI.—On Earth-Shakes in Mining Districts

Published online by Cambridge University Press:  01 May 2009

Charles Davison
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Extract

The term ‘earth-shake’ has been applied to local disturbances of the earth which owe their origin, either in part or wholly, to artificial causes. Typical examples of earth-shakes are those which are occasionally felt at Sunderland and other places on the magnesian limestone of the Durham coast, and which have been attributed by Prof. Lebour to rock-falls in underground channels, enlarged no doubt by pumping in connection with the local water-supply. Other examples are the shocks frequently felt in mining districts, and either caused or precipitated by mining operations. Earth-shakes of this class have occurred in the Rhondda Valley in Glamorganshire on June 22, 1889, April 11 and May 2, 1894, and October 16,1896; in the neighbourhood of Camborne on June 4 and 10, 1902; at Pendleton, near Manchester, on February 27, 1899, and April 7, 1900; at Kilsyth in Stirlingshire on February 16, 1898, and in various other districts.

Type
Original Articles
Information
Geological Magazine , Volume 2 , Issue 5 , May 1905 , pp. 219 - 223
Copyright
Copyright © Cambridge University Press 1905

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References

page 219 note 3 “On the Breccia-gashes of the Durham Coast and some Recent Earth-shakes at Sunderland,” North of England Inst. of Min. Eng. Trans., vol. xxxiii, 1884, pp. 165–174; “On some Recent Earthquakes on the Durham Coast and their probable Cause,” Geol. Mag., Vol. II, 1885, pp. 513–515.

page 220 note 1 W. N. Atkinson, Report of H.M. Inspector of Mines for the Stafford District for the year 1903, p. 15. Mr. Atkinson remarks that the terms ‘bump,’ ‘goth,’ etc., refer to “a sort of explosion or eructation in the strata which in some cases is so severe as to be comparable to local earthquakes. They occur chiefly in thick and deep seams, and vary greatly in intensity both as to sound and effect on the strata. The sound is often compared to that of a shot, and appears to occur sometimes in the coal itself and sometimes in the strata overhead; in heavy bumps the sound is more like thunder. The effect of the bumps on the strata varies greatly; in slight cases there is no observable effect except the sound; when more severe there is vibration, and falls of roof may take place, or coal be burst off the face; in severe cases timber is broken or reeled out, and the mine appears to be about to collapse. In some cases the floor bursts up instead of the roof falling.”

page 220 note 2 Geol. Mag., Vol. VII, 1900, pp. 174–177; Vol. VIII, 1901, p. 361.

page 221 note 1 Geol. Mag., Dec. IV, Vol. VII, 1900, pp. 164–166.