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Clouded felspars and thermal metamorphism

Published online by Cambridge University Press:  14 March 2018

A. G. MacGregor
A. G. MacGregor*
Affiliation:
Geological Survey of Scotland
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Extract

The present paper summarizes the facts at present known regarding a characteristic effect that is often produced in the fresh plagioclase felspars of igneous rocks by thermal metamorphism—namely the development of a special type of cloudiness caused by the appearance of minute inclusions. Reference is also made to certain wel|-known rocks in which the clouding of plagioclase felspars has been described without any suggestion that the peculiarity of the felspars is connected with thermal metamorphism.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 22 , Issue 133 , June 1931 , pp. 524 - 538
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1931

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References

1877 Törnebohm, (A. E.). Ueber die wichtigeren Diabas- und Gabbro-Gesteine Schwedens. Neues Jahrbuch Min. Geol., pp. 379-393.Google Scholar
1885 Teall, (Sir J. J. H.). The metamorphosis of dolerite into hornblende-schist. Quart. Journ. Geol. Soc. London, vol. 41, pp. 133–144.CrossRefGoogle Scholar
1885 Judd, (J. W.). On the Tertiary and older peridotites of Scotland. Quart. Journ. Geol. Soc. London, vol. 41, pp. 354–416.Google Scholar
1886 Williams, (G. H.). The gabbros and associated hornblende rocks occurring in the neighbourhood of Baltimore, Md. Bull. U.S. Geol. Survey, no. 28.Google Scholar
1886 Judd, (J. W.). On the gabbros, dolerites, and basalts, of Tertiary age, in Scotland and Ireland. Quart. Journ, Geol. Soc. London, vol. 42, pp. 49–89.CrossRefGoogle Scholar
1888 Teall, (Sir J. J. H.). British Petrography. London.Google Scholar
1889 Judd, (J. W.). On statical and dynamical metamorphism. Geol. Mag., n. ser., dec. 3, vol. 6, pp. 243–249.Google Scholar
1899 Teall, (Sir J. J. H.). In The Silurian rocks of Britain, vol. I, Scotland. Mem. Geol. Survey, Great Britain.Google Scholar
1901 Kynaston, (H.). In Summary of Progress for 1900. Mem. Geol. Survey Great Britain, pp. 82-83.Google Scholar
1905 Kynaston, (H.). Notes on contact metamorphism round the Cheviot granite. Trans. Edinburgh Geol. Soc., vol. 8, pp. 18–26. (Read in 1899.)Google Scholar
1907 Teall, (Sir J. J. H.). In The geological structure of the north-west Highlands of Scotland. Mem. Geol. Survey, Great Britain.Google Scholar
1907 Rosenbusch, (H.). Mikroskopische Physiographic dcr Mincralien und Gesteine, vol. 2, pt. 1, Stuttgart.Google Scholar
1910 Högbom, (A. G.). Precambrian geology of Sweden. Bull. Geol. Inst, Upsala, vol. 10, pp. 1–80.Google Scholar
1913 Högbom, (A. G.). Fennoskandia. Handbueh der Regionalen Geologie, vol. 4, no. 3.Google Scholar
1916 Bailey, (E. B.). In The geology of Ben Nevis and Glen Coe. Mem. Geol. Survey, Scotland.Google Scholar
1916 Tyrrell, (G. W.). A contribution to the petrography of Benguella, based on a rock collection made by Prof. J. W. Gregory. Trans. Roy. Soc. Edinburgh, vol. 51 pp. 537-559.CrossRefGoogle Scholar
1918 Teall, (Sir J. J. H.). Dynamic metamorphism. A review, mainly personal. Proc. Geol. Assoc. London, vol. 29, pp. 1–15.CrossRefGoogle Scholar
1921 Tilley, (C. E.). The granite-gneisses of southern Eyre Peninsula (South Australia) and their associated amphibolites. Quart. Journ. Geol. Soc. London, vol. 77, pp. 75–131.Google Scholar
1924 Thomas, (H. H.) and Bailey, (E. B.). in The Tertiary and post-Tertiary geology of Mull, Loch Aline, and Oban. Mere. Geol. Survey, Scotland.Google Scholar
1928 Insley, (H.). The gabbros and associated intrusive rocks of Harford County, Maryland. Maryland Geol. Survey, vol. 12, pp. 289-332.Google Scholar
1929 Macgregor, (A. G.). Metamorphism around the Lochnagar granite, Aberdeenshire. Rep. British Assoc. Glasgow, 1928, Sect. C. Geology, pp. 553-554.Google Scholar
1929 Knopf, (E. B.) and Jonas, (A. I.). The geology of the crystalline rocks of Baltimore County. In Baltimore County. Maryland Geol. Survey, pp. 97-199.Google Scholar
1930 Macgregor, (A. G.). In The geology of north Ayrshire. Mem. Geol. Survey, Scotland.Google Scholar
1930 Richey, (J. E.) and Thomas, (H. H.). in The geology of Ardnamurchan, north-west Mull, and Coll. Mere. Geol. Survey, Scotland.Google Scholar