The Recent volcanology of Terceira, Azores

  title={The Recent volcanology of Terceira, Azores},
  author={Stephen Self},
  journal={Journal of the Geological Society},
  pages={645 - 666}
  • S. Self
  • Published 1 November 1976
  • Geology
  • Journal of the Geological Society
Terceira shows a great diversity of lavas and pyroclastics for an oceanic island and is noteworthy for voluminous production of peralkaline salic magma. Four volcanoes form the island; three are composed of both basic and salic rocks and one has only salic rocks exposed. Since the emergence of the island a compositionally bimodal population of rocks has been represented. The products of over 100 eruptions in the upper Terceira Group have been recognised. These include ignimbrites, pumice fall… 

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