"During the Laxfordian orogenic period dolerite intrusions cross-cut and were chilled against vertical bands of hornblende schist that trend N.W.-S.E. Subsequent metamorphism affected both the regional hornblende schists and the dolerites, and narrow bands of hornblende schist were formed in places at the expense of doleritic chilled margins. Previous interpretations of Lewisian geochronology, tectonics and metamorphic history made on the basis of a unique pre-Laxfordian basic dyke phase cannot be applied to the rocks south of Gairloch."

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