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Contributions to the Petrology of Barnavave, Carlingford, I.F.S.—2. An Occurrence of Quartz-bearing Syenite and its Xenoliths

Published online by Cambridge University Press:  01 May 2009

S. R. Nockolds
S. R. Nockolds
Affiliation:
Geology Department, Manchester University.
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Extract

On the eastern side of Barnavave, at the immediate junction of the igneous mass with the surrounding limestone and about a quarter of a mile south of the fault which crosses the mountain, there is an isolated outcrop of a fine-grained, speckled rock which clearly invades the limestone at this point. The rock includes xenoliths broken from the limestone and also others of igneous origin.-and smaller dimensions. Microscopical examination proves the rock to be a syenite of unusual character which carries a small amount of quartz. It is possibly the rock referred to by Harker.

Type
Original Articles
Information
Geological Magazine , Volume 74 , Issue 3 , March 1937 , pp. 125 - 132
Copyright
Copyright © Cambridge University Press 1937

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References

page 125 note 1 See sketch-map in GEOL. MAG., LXXII, 1935, 290.Google Scholar

page 125 note 2 Harker, A., Petrology for Students, Cambridge, 1923, 51.Google Scholar

page 126 note 3 Lindgren, W., and Loughlin, G. F., U.S.G.S., Prof. Paper, 107, 1919, 68.Google Scholar

page 126 note 4 “Tertiary Igneous Rocks of Skye,” Mem. Geol. Sur. U.K., 1904, 165. “Tertiary and Post-Tertiary Geology of Mull,” Mem. Geol. Sur. Scot., 1924, 189–191.Google Scholar

page 128 note 1 All iron as Fe2O3.

page 130 note 1 All iron as Fe2O3.