Sentence Examples


  • The soil, of decomposed basalt, is wonderfully fertile.
  • Such rocks as basalt, diorite and trachyte are comparatively rare.
  • Large areas are overlain with trachyte, basalt, obsidian, tuff and pumice.
  • In most cases the eruptions appear to be of Pliocene or later date, but in the extreme north some of the basalt seems to belong to the Miocene period.
  • It is formed of basalt, trachyte and phonolite, and the soil is very fertile.