Abstract

Formation of small pipelike appinite intrusions in the southwest Highlands of Scotland took place prior to and was unrelated to emplacement of the Caledonian granitic masses of the region. Considerable evidence indicates that the appinite association is both basaltic and volcanic, and suggests a close relationship with the Lorne and Glen Coe lavas (Devonian). A similar association of appinites with a volcanic pile probably also occurs in the northern Highlands. The history of cooling of the Highland region during emplacement of the Caledonian granites would have been significantly affected by the presence of the postulated volcanic pile.

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