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Two arfvedsonitic rhyolite intrusions from Cloghaneely, Co. Donegal

Published online by Cambridge University Press:  14 March 2018

E. H. Timothy Whitten
E. H. Timothy Whitten*
Affiliation:
Queen Mary College, University of London
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Extract

Many of the Dalradian and 'Moine' rocks of Donegal, and the Caledonian granites associated with them, have been shown to bear structural and petrographic resemblance to the rocks of similar age in Scotland. In Scotland riebeckite-bearing minor intrusions occur at many localities and include Ordovician, Caledonian, Carboniferous, and Tertiary intrusions. There appears to be no record of analogous rocks containing sodic amphiboles occurring in situ in NW. Ireland. The purpose of this paper is to record the existence of two small intrusions of such rocks in western Cloghaneely, Co. Donegal.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 30 , Issue 225 , June 1954 , pp. 393 - 399
Copyright
Copyright © 1954, The Mineralogical Society

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