The Ancient Volcanoes of Great Britain, Volume 1 (of 2)Note 430 — Chapter XXV · GEOLOGICAL STRUCTURE OF THE CARBONIFEROUS VOLCANIC PLATEAUX OF SCOTLANDReading editionExplanation of Sheet 22 Geol. Surv. Scotland, p. 12.◇Copy noteReturn to CHAPTER XXV GEOLOGICAL STRUCTURE OF THE CARBONIFEROUS VOLCANIC PLATEAUX OF SCOTLAND