Hostname: page-component-7bb8b95d7b-fmk2r Total loading time: 0 Render date: 2024-09-15T09:15:44.290Z Has data issue: false hasContentIssue false

The significance of biotite selvedges in migmatites

Published online by Cambridge University Press:  01 May 2009

C. J. Hughes
Affiliation:
Department of Geology, Memorial University of Newfoundland, St John's, Newfoundland, Canada

Summary

The biotite selvedges around potash-feldspar rich leucosome material in migmatites originate at phase boundaries between rocks containing hydrothermal and silicate pore-fluids and are thus indicative of incipient anatexis.

Type
Articles
Copyright
Copyright © Cambridge University Press 1970

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.)

References

REFERENCES

Brown, P. E. 1967. Major element composition of the Loch Coire migmatite complex, Sutherland, Scotland. Contr. Miner. Petrol. 14, 126.CrossRefGoogle Scholar
Butler, B. C. M. 1965. A chemical study of some rocks of the Moine Series of Scotland. Q. Jl geol. Soc. Lond. 121, 163208.CrossRefGoogle Scholar
Currie, K. L. 1968. On the solubility of albite in supercritical water in the range 400 to 600° C and 750 to 3500 bars. Am. J. Sci. 266, 321341.CrossRefGoogle Scholar
Härme, M. 1966. Experimental anatexis and genesis of migmatite: a reply. Contr. Miner. Petrol. 12, 1314.CrossRefGoogle Scholar
Hughes, C. J. & Farrant, J. R. 1963. The geology of ¼° field sheet No. 26. Bull. geol. Surv. Ghana, 29.Google Scholar
Jones, R. H. & Hughes, C. J. 1963. The geology of ¼° field sheet No. 28. Bull. geol. Surv. Ghana, 34.Google Scholar
King, B. C. 1965. The nature and origin of migmatites: metasomatism or anatexis, pp. 219234 in Pitcher, W. S. & Flinn, G. W., (Eds.): Controls of Metamorphism, Oliver and Boyd, Edinburgh and London.Google Scholar
Mehnert, K. R. 1968. Migmatites. Elsevier, Amsterdam.Google Scholar
Misch, P. 1968. Plagioclase compositions and non-anatectic origin of migmatitic gneisses in northern Cascade Mountains of Washington State. Contr. Miner. Petrol. 17, 170.CrossRefGoogle Scholar
Orville, P. M. 1963. Alkali ion exchange between vapor and feldspar phases. Am. J. Sci. 261, 201237.CrossRefGoogle Scholar
Pitcher, W. S. 1952. The migmatitic older granodiorite of Thorr District. Co. Donegal. Q. Jl geol. Soc. Lond. 108, 413446.CrossRefGoogle Scholar
Smith, F. G. 1948. Transport and deposition of the non-sulphide vein minerals. III, phase relations at the pegmatitic stage. Econ. Geol. 43, 535546.CrossRefGoogle Scholar
Von Platen, H. 1965. Experimental anatexis and genesis of migmatites, pp. 203218 in Pitcher, W. S. & Flinn, G. W. (Eds.): Controls of Metamorphism, Oliver and Boyd, Edinburgh and London.Google Scholar
White, A. J. R. 1966. Genesis of migmatites from the Palmer region of South Australia. Chem. Geol. 1, 165200.CrossRefGoogle Scholar