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I.—The Secret of the Highlands

Published online by Cambridge University Press:  01 May 2009

Charles Lapworth
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Extract

The theory of the gradual formation of overfolds and overfaults in a stratified system is thus developed by Professor Heim:—

Wherever a stratified rock series is subjected to the lateral horizontal thrust of the earth’s crust, a fold is originated. This fold consists of two opposed and symmetrical members, with more or less remote axes, viz. (Plate VIII. Fig. 1)

Type
Original Articles
Information
Geological Magazine , Volume 10 , Issue 8 , August 1883 , pp. 337 - 344
Copyright
Copyright © Cambridge University Press 1883

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References

page 337 note 1 Heim, Mechanismus der Gebirgsbildung, Band I. pp. 220–223.Google Scholar

page 343 note 1 On the Origin of Slaty Cleavage, by Sorby, H. C., F.G.S., etc., Edinburgh New Philosophical Journal, 07, 1853.Google Scholar

page 343 note 2 Compare:— (a) Corrugations only-rugae continuous. Ramsay, Geol. N. Wales, 1881, p. 239, fig. 96. Geikie, Handbook Geology, 1882, p. 520, fig. 245. (b) Corrugation with diminished middle wall. Ramsay, Ibid. p. 231, figs. 78 and 79. Geikie, Ibid. 120, fig. 19. (c) Corrugation with dislocation planes (“contorted false bedding”). Geikie, Ibid. p. 479, fig. 189. Lyell's Students' Elements, ed. 1871, fig. 628. (d) Overfolding and faulting of rugæ. (e) Overthrust, Bonney, Quart. Journ. Geol. Soc. 1883, pl. 39, fig. 2.