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III.—On the Making of a Quartz Schist

Published online by Cambridge University Press:  01 May 2009

John Parkinson
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Extract

In a paper published some eight years ago, Prof. T. G. Bonney discriminated between the dominant characteristics of quartz schists from the Alps and quartzites modified by pressure. The distinctions as therein pointed out may be thus summed up.

Type
Original Articles
Information
Geological Magazine , Volume 9 , Issue 6 , June 1902 , pp. 259 - 265
Copyright
Copyright © Cambridge University Press 1902

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References

page 259 note 1 Edwards & Haime: Brit. Foss. Corals (Palæont. Soc.), p. 252, pl. lviii, fig. 1.

page 259 note 2 Kiär: Die Korallenfaun, Ét. 5, Norweg. Silur., p. 32, t. v, figs. 5–6: Palæontographica, Bd. xlvii, 1899–1900.

page 259 note 3 Geol. Mag., Dec. III, Vol. X (1893), p. 204;Google Scholar also Mag., Dec. IV, Vol. III (1896), p. 400 (“On a Pebbly Quartz-Schist from the Val d'Anniviers”).Google Scholar

page 260 note 1 See also a paper by ProfessorBonney, T. G. in Quart. Journ. Geol. Soc., 1888, vol. xliv, p. 32, on the Huronian Series in the neighbourhood of Sudbury (Canada); a sedimentary series showing changes which approximate them in character to a true schist. I am greatly indebted to Professor Bonney for opportunity to study his slides of these rocks, and for suggestions given from time to time on this and kindred subjects.CrossRefGoogle Scholar

page 260 note 2 The age of these rocks is a matter of interest. The identification is a rather difficult one, and I am indebted to Dr. Whiteaves and Dr. H. M. Ami, of the Canadian Geological Survey, for kindly replying to my question on the subject. To the E.N.E. of, and about eighteen miles as the crow flies from, the Illecellewaet Glacier, a Lower Cambrian fauna has been found, and to the westward lies the Shuswap Series, probably of Archæan age. Above the latter and to the east are “dark argillites passing into micaceous schists” (Summary Rep. 1890–1, n.s., v, pt. 1, p. 20A). These are the Nisconlith Series (Lower Cambrian), probably equivalent to the Bow River Series. See also papers by the late Dr. G. M. Dawson,Google Scholar Bull. Geol. Soc. Amer., vol. ii, pp. 165–176, “Note on the Geological Structure of the Selkirk Range,”Google Scholar and Ann. Rep. Geol. Surv. Canada, 1896, vol. vii, pt. B, pp. 28B–34B, in which the quartzites in the vicinity of the Glacier House, Mountain Sir Donald, etc., are placed in the Cambrian system under the name of the Selkirk Series and overlying the Nisconlith Series.Google Scholar

page 262 note 1 They are a member of the transition system, i.e. they occupy an intermediate position between the gneisses and the older Palæozoic rocks.

page 263 note 1 “An Experimental Investigation into the Flow of Marble”: Phil. Trans., 1901, vol. 195 A, p. 363.Google Scholar

page 263 note 2 An inch or rather less in diameter and about 1 · 5 inches in length.

page 264 note 1 Sufficient experiments were not made to determine this point.

page 264 note 2 Proc. Roy. Soc., 1899, vol. lxv, p. 90.Google Scholar

page 264 note 3 In an experiment on “the effect of very severe strain on lead”: Phil. Trans., 1901, vol. 195 A, p. 285.Google Scholar

page 264 note 4 U.S. Geol. Surv. Monographs, xix, 1892, p. 296.Google Scholar