Hostname: page-component-76c49bb84f-887v8 Total loading time: 0 Render date: 2025-07-09T23:26:32.015Z Has data issue: false hasContentIssue false
  • English
  • Français

Evidence from feldspar compositions of high temperatures in granite sheets in the Scourian complex, N.W. Scotland

Published online by Cambridge University Press:  05 July 2018

Hugh R. Rollinson
Hugh R. Rollinson*
Affiliation:
Department of Earth Sciences, The University, Leeds, LS2 9JT
Get access Rights & Permissions [Opens in a new window]

Abstract

Mesoperthite feldspars from hypersolvus granites, with granulite-facies mineralogy from the Scourian complex, N.W. Scotland have an average bulk composition of (Ab0.58Or0.42)88An12. The mesoperthites have an Ab/Or ratio close to the critical composition of the alkali feldspar solvus for anorthite-free compositions. The critical temperature of the ternary feldspar solvus is estimated at high anorthite contents and used to indicate a temperature in excess of 1000°C for the crystallization of the granite sheets prior to granulite-facies metamorphism and permits a maximum water content in the melt of 1%.

Information

Type
Research Article
Information
Mineralogical Magazine , Volume 46 , Issue 338 , March 1982 , pp. 73 - 76
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1982

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

Footnotes

*

Present Address: Department of Geography and Geology, College of St. Paul and St. Mary, The Park, Cheltenham, Glos. GL50 2RH.

References

Carmichael, I. S. E. (1963 Q.J. Geol. Soc. Lond. 119, 95–131.CrossRefGoogle Scholar
Huang, W., and Wyllie, P. J. (1975 J. Geol. 83, 737–48.CrossRefGoogle Scholar
O'Hara, M. J., and Yarwood, G. (1978 Phil. Trans. R. Soc. Lond. A, 288, 441–56.Google Scholar
Parsons, I. (1978 Mineral. Mag. 42, 1–17.CrossRefGoogle Scholar
Rollinson, H. R. (1979 Mineral. Macd. 43, 165–70.CrossRefGoogle Scholar
Rollinson, H. R. (1980 Ibid. 43, 623–31.Google Scholar
Rollinson, H. R. (1981 Lithos 14, 225–38.CrossRefGoogle Scholar
Rollinson, H. R. and Windley, B. F. (1980 Contrib. Mineral. Petrol. 72, 265–81.CrossRefGoogle Scholar
Stormer, J. C. (1975 Am. Mineral. 60, 667–74.Google Scholar
Whitney, J. A. (1975 J. Geol. 83, 1–31.CrossRefGoogle Scholar
Whitney, J. A. and Stormer, J. C. (1977 Contrib. Mineral. Petrol. 63, 51–64.CrossRefGoogle Scholar