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A Pyroxene – Hornfels from the Basic Plutonic Complex, Co. Tyrone, Ireland

Published online by Cambridge University Press:  01 May 2009

N. S. Angus
N. S. Angus
Affiliation:
Department of Geology, The University, Hull
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Summary

A basic augite-hypersthene-hornfels, which escaped a subsequent regional amphibolite facies metamorphism, is preserved adjacent to a gabbroic intrusion of the Basic Plutonic Complex. The hornfels and two dolerites have been analysed and their compositions compared with similar rocks from Duluth and Skye. It appears that Si, Na and K have been removed from the dolerites, and the resultant hornfels relatively enriched in Fe, Mg, Ti and Ca.

Type
Articles
Information
Geological Magazine , Volume 107 , Issue 3 , May 1970 , pp. 277 - 287
Copyright
Copyright © Cambridge University Press 1970

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References

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