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III.—Hot Springs

Published online by Cambridge University Press:  01 May 2009

Ernest H. L. Schwarz
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Extract

Through the great kindness of Professor Suess I have received the full text of his paper on Hot Springs, read before the Congress of Naturforscher und Aerzte held last year in Karlsbad, in which he adduces very strong arguments in favour of their being due to vapours given off from the molten interior of the earth as it gradually cools. I have for a long time been observing the hot springs that occur in the Cape Colony, and had come to the conclusion that they were surface-waters that had sunk deep into the earth's crust, and were returned heated in consequence of their having been in the neighbourhood of potential fusion of the rocks. This latter view I alluded to in a recent paper, and I do not like to have to give up a long-cherished idea before submitting to the public a statement of the reasons that led me to my view of the subject.

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Type
Original Articles
Information
Geological Magazine , Volume 1 , Issue 6 , June 1904, pp. 252 - 260
Copyright
Copyright © Cambridge University Press 1904

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References

page 252 note 1 “Prometheus,” vol. xiv, Nos. 690, 691, 692, beginning p. 209, Berlin, 1903; abstract in Geographical Journal, vol. xx, p. 517.

page 252 note 2 “An unrecognised Agent in the Deformation of Rocks”: Trans. S. African Phil. Soc., p. 391, Cape Town, 1903.

[page 254 note l Reference may be made to the occurrence of native iron, which has been discovered in considerable quantities at Ovifak, Disko Island, Greenland, and which was at one time supposed to be of meteoric origin, but has since been shown to be disseminated through an eruptive basaltic rock on the spot, and must therefore have come to the surface from a deep-seated source in the interior of the earth. (See K. I. V. Steenstrup in Mineralogical Magazine, July, 1884, vol. vi, p. 1.) — EDIT. GEOL. MAG.]

page 254 note 2 Ann. Eeport Geol. Commission for 1902, Cape Town, 1903, p. 46.

page 254 note 3 Becker: U.S. Geol. Surv., Mon. 13, 1888.

page 255 note 1 Sir Lowthian Bell: Journal of the Iron and Steel Institute, No. 11, 1881.

page 256 note 1 Rev. O. Fisher: “Physics of the Earth's Crust,” 1899, p. 148.

page 256 note 2 Sollas: Pres. Address, British Association, Bradford, 1900.

page 257 note 1 These crush-breccias will be described in the forthcoming Annual Report of the Geological Commission, Cape Town, 1904.

page 258 note 1 See C. Darwin, “Observations on Volcanic Islands,” in “Geological Observations,” 1851, p. 116: and also “More Letters of C. Darwin,” 1903, vol. ii, p. 143.

page 258 note 2 C. E. Dutton: “High Plateaus of Utah,” 1880, p. 125.

page 258 note 3 It would be interesting to know in this connection whether increased pumping from the boreholes that were put down in granite near the sea along the Swedish coast would bring the salt water through the crevices. See C. R. Markham: Geogr. Journ., vol. x (1897), p. 465.

page 259 note 1 “Géologie Expérimentale,” 1879, p. 258.