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IV.—On Explosive Slickensides

Published online by Cambridge University Press:  01 May 2009

Extract

During a recent examination of the lead-mines of Derbyshire, I was interested in some accounts of explosions which had taken place, which were not due either to any material used by the workmen or to fire-damp. Though at first inclined to believe that the accounts were exaggerated, I soon found that not only was the evidence of such explosions having constituted a real danger to the men overwhelming, but that accidents are still liable to occur from this cause. The explosions are connected with the structure known as slickenside in the veins.

Type
Original Articles
Copyright
Copyright © Cambridge University Press 1887

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References

page 400 note 1 Wherever Dr. Wright has mentioned the zone of Harp, serpentinum, it must prohably be taken to indicate the zone of Am. falcifer.

page 401 note 1 The History of the Mineral Waters of Derbyshire, Lincolnshire, and Yorkshire, by Short, Thomas, M.D., 4to., London, 1734, p. 96.Google Scholar

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page 402 note 1 Slappits, fragments of the minerals burst out of the vein.

page 402 note 2 Stemples, joists laid across fissures, when the minerals are cut out, by way of making a floor, on which rubbish is deposited, to save the expense of raising it to the surface.

page 402 note 3 Forefield, that part of the vein under workmanship.

page 403 note 1 Kebble, a white opaque spar, calcareous, but not apt to break into rhomboidal forms.

page 403 note 2 The Mineralogy of Derbyshire, by Mawe, John, 8vo. London, 1802, p. 48.Google Scholar

page 403 note 3 General View of the Agriculture and Minerals of Derbyshire, by Farey, John, 8vo. London, 1811, vol. i. p. 250.Google Scholar

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page 404 note 1 An Account of the Explosion of Slickensides, by Watson, W., Edin. Journ. Sci. new ser. vol. ii. p. 186, 1829.Google Scholar

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page 405 note 1 In a letter dated 22nd October, 1886.

page 405 note 2 In a letter dated 23rd November, 1886.

page 405 note 3 In a letter dated 15th October, 1886.

page 406 note 1 The Geological Agency of Lateral Pressure exhibited by certain Movements of Rocks, Proc. Boston Soc. Nat. Hist. vol. xviii. p. 272 (1876); see also ib. vol. xiv. and Proc. American Assoc, for the Advancement of Science, vol. viii. p. 285, and vol. xxii. part ii.Google Scholar

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