Note 432 — Chapter XLVIII · THE ACID SILLS, DYKES AND VEINS
Reading edition
Professor Judd (Quart. Journ. Geol. Soc. vol. xlix. (1893), p. 175) described the granophyre dykes of this locality as inclusions of Tertiary granite in the gabbro, and cited them in proof of his contention that the acid eruptions of the Western Isles are older than the basic. Their true character was shown by me in a paper published in the Quart. Journ. Geol. Soc. vol. 1. (1894), p. 212.