The minor intrusions of Assynt, NW Scotland : early development of magmatism along the Caledonian Front

Goodenough, K.M.; Young, B.N.; Parsons, I.. 2004 The minor intrusions of Assynt, NW Scotland : early development of magmatism along the Caledonian Front. Mineralogical Magazine, 68 (4). 541-559. https://doi.org/10.1180/0026461046840207

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Abstract/Summary

The Assynt Culmination of the Moine Thrust Belt, in the northwest Scottish Highlands, contains a variety of Caledonian alkaline and calc-alkaline intrusions that are mostly of Silurian age. These include a significant but little-studied suite of dykes and sills, the Northwest Highlands Minor Intrusion Suite. We describe the structural relationships of these minor intrusions and suggest a classification into seven swarms. The majority of the minor intrusions can be shown to pre-date movement in the Moine Thrust Belt, but some appear to have been intruded during the period of thrusting. A complex history of magmatism is thus recorded within this part of the Moine Thrust Belt. New geochemical data provide evidence of a subduction-related component in the mantle source of the minor intrusions.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	https://doi.org/10.1180/0026461046840207
Programmes:	BGS Programmes > Geology and Landscape Northern
NORA Subject Terms:	Earth Sciences
Date made live:	06 Apr 2011 12:52 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/14001

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