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Metadolerite age relationships in the dalradian of northwest donegal, Ireland and their orogenic significance

✍ Scribed by D. H. W. Hutton

Publisher: John Wiley and Sons
Year: 2008
Tongue: English
Weight: 372 KB
Volume: 14
Category: Article
ISSN: 0072-1050
DOI: 10.1002/gj.3350140213

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✦ Synopsis

Abstract

The structural relationships of several intrusive sheets belonging to the extensive metadolerite suite of the Appin (lower) Dalradian rocks of the Creeslough area, northwest Donegal, Ireland have been examined. It is concluded that, relative to the regional chronology of deformation of the enclosing metasediments, sheet emplacement has occurred: pre‐D2; syn‐D2; between D2 and D3; and syn‐D3. The height of activity came in the post‐D2, pre‐D3 interval and coincided with the peak of regional metamorphism in the area. These relationships in Donegal are compared with those of the pretectonic basic rocks of the southwest Highlands and models are discussed.

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