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Melting relations of Tertiary granitic rocks in Skye and Rhum

Published online by Cambridge University Press:  14 March 2018

G. M. Brown
G. M. Brown*
Affiliation:
Department of Geology and Mineralogy, University Museum, Oxford
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Summary

The results of reconnaissance melting experiments on Tertiary granophyres and Torridonian arkose at 1000 kg/cm2 water-vapour pressure show that the melting behaviour of these rocks can be viewed in relation to the synthetic system NaAlSi3O8-KAlSi3O8-SiO2-H2O. By analogy with this system, P-T curves are constructed for Skye granophyres and, viewed in relation to the stability of tridymite, the depth and temperature of emplacement are estimated. Further estimates of the likely depth of magma generation, and the behaviour of the country rocks at that level, lead to the conclusion that most of the Tertiary granitic rocks were produced through partial melting of Lewisian basement rocks, the heat being provided by the basic magmas available during this volcanic episode. Subsidiary amounts of granitic magma were similarly derived from higher levels, within the Torridonian arkose group, and evidence is provided for the depth and temperature at which these, together with tridymite-bearing metamorphosed arkose in Rhum, were produced.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 33 , Issue 262 , September 1963 , pp. 533 - 562
Copyright
Copyright © 1963, The Mineralogical Society

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References

Bailey, (E. B.), 1954. Geol. Mag., vol. 91, p. 105.CrossRefGoogle Scholar
Bell, (J. D.), 1959. The geology and petrology of the northern end of the Blaven Range, Isle of Skye. Unpublished D.Phil. thesis, Oxford University.Google Scholar
Blacx, (G. P.), 1954. Min. Mag., vol. 30, p. 518.Google Scholar
Blacx, (G. P.) and Welsih, (W.), 1961. Geol. Mag., vol. 98, p. 265.CrossRefGoogle Scholar
Brown, (G. M.), 1956. Phil. Trans. Roy. Soc., Series B, vol. 240, p. 1.Google Scholar
Burnham, (C. W.) and Jahins, (R. H.), 1958. Bull. Geol. Soc. Amer. (Abstr.), vol. 69, p. 1544.Google Scholar
Butler, (B. C. M.), 1961. Min. Mag., vol. 32, p. 866.Google Scholar
Clough, (C. T.) and Harker, (A.), 1904. Mem. Geol. Surv. U.K. Google Scholar
Harker, (A.), 1904. Ibid.Google Scholar
Harker, (A.) 1932. Metamorphism. Methuen & Co., London.Google Scholar
Jahns, (R. H.) and Burnham, (C. W.), 1958. Bull. Geol. Soc. Amer. (Abstr.), vol.69, p. 1592.Google Scholar
Kennedy, (W. Q.), 1951. Geol. Mag., vol. 88, p. 257.CrossRefGoogle Scholar
Kranch, (E. H.) and Oja, (R. V.), 1960. Rept. 21st Internat. Geol. Congr., part 14, p. 16.Google Scholar
Kuno, (H.), Yamasaki, (K.), Iida, (C.), and Nagastflma, (K.), 1957. Japan. Journ. Geol. Geogr., vol. 28, p. 179.Google Scholar
Peach, (B. N.) and others, 1907. Mem. Geol. Surv. U.K. Google Scholar
Reynolds, (D. L.), 1956. Geol. Mag., vol. 95, p. 378.CrossRefGoogle Scholar
Schairer, (J. F.), 1950. Journ. Geol., vol. 58, p. 512.CrossRefGoogle Scholar
Schairer, (J. F.), 1957. Journ. Amer. Ceram. Soc., vol. 40, p. 215.CrossRefGoogle Scholar
Tuttle, (O. F.) and Bowen, (N. L.), 1958. Mem. Geol. Soc. Amer. no. 74.Google Scholar
Tuttle, (O. F.) and England, (J. L.), 1955. Bull. Geol. Soc. Amer., vol. 66, p. 149.CrossRefGoogle Scholar
Tuttle, (O. F.)and Keith, (M. L.), 1954. Geol. Mag., vol. 91, p. 61.CrossRefGoogle Scholar
Water, (L. R.), 1953. Meddel. Dansk. Geol. Forening, vol. 12, p. 335.Google Scholar
Wager, (L.R.), Stewant, (F. H.), and Kennedy, (W.Q.), 1948. Rept. 18th Internal Geol. Congr., Guide to Excursion C. 14.Google Scholar
Wager, (L.R.) Vincent, (E. A.), Bowen, (N. L.), and Bell (J. D.). The Marscoite Suite of the Western Redhills complex, Isle of Skye (in MS.).Google Scholar
Weedon, (D. S.), and Vincent, (E. A.), 1953. Min. mag., vol. 30, p. 263.Google Scholar
Washington, (H. S.), 1917. U.S. Geol. Surv. Prof. Paper, no. 99.Google Scholar
Winkler, (H. G. F.) and Yon Platen, (H.), 1961. Geochimica Acta, vol 24, p. 250rCrossRefGoogle Scholar
Wyllie, (P. J.), 1961. Journ. Petrology, vol. 2, p. 1.CrossRefGoogle Scholar
Wyllie, (P. J.) and Tuttle, (O. F.), 1961. Geol. Mag., vol 98, p. 56.CrossRefGoogle Scholar