Hostname: page-component-78c5997874-m6dg7 Total loading time: 0 Render date: 2024-11-02T22:26:44.231Z Has data issue: false hasContentIssue false
  • English
  • Français

A “Vein” of Trondhjemite aplite: Granitization of Quartzite forming the sole of a Fold-thrust, Malin Head, Co. Donegal

Published online by Cambridge University Press:  01 May 2009

Doris L. Reynolds
Doris L. Reynolds
Affiliation:
Grant Institute of Geology, University of Edinburgh.
Get access Rights & Permissions [Opens in a new window]

Abstract

A narrow layer of quartzite, emplaced within epidiorite by foldthrusting, is transformed to albite-trondhjemite aplite and contiguous zones of the epidiorite are enriched in biotite. By reference to six chemical analyses it is found that, with but small additions of potash these transformations can be accounted for by the combined processes of (a) mechanical mixing of the initial quartzite and epidiorite, and (b) metamorphic inter-diffusion between this mixture and the adjoining epidiorite.

Type
Articles
Information
Geological Magazine , Volume 98 , Issue 3 , June 1961 , pp. 195 - 209
Copyright
Copyright © Cambridge University Press 1961

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

Eskola, P., 1932. On the principles of metamorphic differentiation, Bull. Comm. géol. Finlande, No. 97, 68–77.Google Scholar
Eskola, P., 1933. The term “metamorphic differentiation” first proposed by Stillwell, F. L.. Bull Comm. géol. Finlande, No. 103, 45–46.Google Scholar
Eskola, P., 1934. A note on diffusion and reaction in solids. Bull. Comm. géol. Finlande. No. 104, 144–156.Google Scholar
Gavelin, S., 1960. On the relations between kinetometamorphism and metasomatism in granitization. Some examples from the Archean of eastern Sweden. Geol. Fören. Stockh. Förh. 82, 230–269.CrossRefGoogle Scholar
Goldschmidt, V. M., 1916. Geologisch-Petrographisch studien im Hochgebirge des Südlichen Norwegens. IV. Ubersicht der eruptivgesteine im Kaledonischen gebirge zwichen Stavanger und Trondhjem. Skr. Vidensk. Selsk Christ. 1 Mat-Nat. Klasse. No. 2, 140.Google Scholar
Goldschmidt, V. M., 1921. Geologisch-Petrographische Studien im Hochgebirge des Südlichen Norwegens. V. Die Injektionsmetamorphose im Stavanger Gebiete. Skr. Vidensk. Selsk Christ. 1. Mat-Nat. Klasse, No. 10, 142.Google Scholar
Holmes, A. and Reynolds, D. L., 1947. A front of metasomatic metamorphism in the Dalradian of Co. Donegal. Bull. Comm. géol. Finlande. No. 140, 25–65.Google Scholar
McCallien, W. J., 1935. The metamorphic rocks of Inishowen, Co. Donegal. Proc. R. Irish Acad., 42, B, 15, 407–442.Google Scholar
McIntyre, D. B., 1947. The north-west part of the Loch Doon plutonic complex: a study in petrogenesis. Thesis presented for the degree of Doctor of Philosophy, the University of Edinburgh.Google Scholar
Nolan, J., 1890. In The geology of Inishowen, North Donegal. Mem. geol. Surv. U.K. (Sheets 1, 2, 5, 6, and 11). Dublin.Google Scholar
Reynolds, D. L., and Holmes, A., 1954. The superposition of Caledonoid folds on an older fold-system in the Dalradians of Malin Head, Co. Donegal. Geol. Mag., xcl, 417–444.CrossRefGoogle Scholar
Stillwell, F. L., 1918. The metamorphic rocks of Adelie Land. Scientific reports of the Australasian Antarctic Expedition 1911–1914, Series A, 3, Part 1.Google Scholar
Wiseman, J. D. H., 1934. The central and south-west Highland epidiorites: a study in progressive metamorphism. Quart. J. geol. Soc. Lond., xc. 354–417.CrossRefGoogle Scholar