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II.—On the Stafford Earthquakes of January 14–15, 1916, and on the Relations between the Twin-Earthquakes of the Midland Counties

Published online by Cambridge University Press:  01 May 2009

Charles Davison
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Extract

The strong shock of January 14, 1919, originated in a region from which earthquakes have been absent for many years, perhaps for several centuries, and its interest is therefore increased by the fact that it was a twin-earthquake, that is, one produced by a single generative eifort in two detached foci.

Type
Original Articles
Information
Geological Magazine , Volume 6 , Issue 7 , July 1919 , pp. 302 - 312
Copyright
Copyright © Cambridge University Press 1919

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References

page 303 note 1 Geogr. Journ., vol. xlvi, pp. 360–1, 1915.Google Scholar

page 309 note 1 Close to Eccleshall there is a small post-Triassic fault (Geol. Surv. map, sheet 22, S.W.), which is parallel to the longer axis of the isoseismal 7, and hades to the north. If this fault were continued to the east it would occupy the position assigned to the fault-line by the seismic evidence.

page 310 note 1 Quart. Journ. Geol. Soc., vol. lx, pp. 215–32, 1904.Google Scholar

page 310 note 2 Quart. Journ. Geol. Soc., vol. lxi, pp. 8–17, 1905.Google Scholar

page 311 note 1 Geol. Mag., Vol. V, pp. 301–3, 1908.Google Scholar

page 311 note 2 Quart. Journ. Geol. Soc., vol. lxi, pp. 1–7, 1905.Google Scholar

page 311 note 3 It will be noticed that the distance between the foci of the Leicester earthquake is about double that between the foci of the Derby and Stafford earthquakes. Possibly, the foci of the Leicester earthquake occupy the crests of successive folds; but there are difficulties in the way of such an explanation.