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The Inishdawros meta-peridotite, Callow, Ballyconneely, Connemara, Western Ireland

Published online by Cambridge University Press:  05 July 2018

A. A. Ahmed  and
B. E. Leake
A. A. Ahmed
Affiliation:
Department of Geology, Assiut University, Egypt
B. E. Leake
Affiliation:
Department of Geology, University, Glasgow G12 8QQ
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Summary

The chemistry and petrography of a meta-ultrabasic lens containing peridotite with poikilitic pyroxenes and hornblende, both of probable igneous origin, are given. The body also contains feldspathic-bearing hornblende meta-gabbros and is a tectonic fragment in hornblende-plagioclase rock belonging to the same Errismore intrusion. Chemical analyses fail to discern any appreciable systematic differentiation trend across the body despite modal variation to hornblende plagioclase layers. The high Niggli mg near the structural bottom of the intrusion suggests that this part of the Errismore intrusion is right way up, contrary to a previous suggestion.

Type
Research Article
Information
Mineralogical Magazine , Volume 42 , Issue 321 , March 1978 , pp. 69 - 74
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1978

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References

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