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

Author:

Ahmed A. A.,Leake B. E.

Abstract

SummaryThe 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.

Publisher

Mineralogical Society

Subject

Geochemistry and Petrology

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