Sentence Examples


  • During this time of comparative rest, rhyolites were extruded locally in county Antrim; and there is very strong evidence that the granite of the Mourne Mountains, and that which cuts the Carlingford gabbro, were added at the same time to the crust.
  • We may note the pre-Cambrian lavas and tuffs of the Wrekin district in Shropshire and the somewhat later volcanic rocks of Charnwood; the porphyrites, andesites, tuffs and rhyolites of the Borrowdale volcanic centre, erupted in the Ordovician period, and the Silurian granites of the same region.
  • The Devonian rocks at Yalwal are sharply folded and are associated with a series of rhyolites and basic lavas.
  • The whole of this consists of tuffs and lavas, andesites prevailing in the west and rhyolites and dacites in the east.
  • Rhyolites were erupted locally near Tardree, Ballymena and Glenarm.
 

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