The Ancient Volcanoes of Great Britain, Volume 2 (of 2)Note 348 — Chapter XLIII · THE BOSSES AND SHEETS OF GABBROReading editionMr. J. J. H. Teall and A. G., Quart. Journ. Geol. Soc. vol. 1. (1894), p. 652.◇Copy noteReturn to CHAPTER XLIII THE BOSSES AND SHEETS OF GABBRO