Definition of volcanism in English:

volcanism

Line breaks: vol¦can|ism
Pronunciation: /ˈvɒlkənɪz(ə)m
 
/
(also vulcanism)

noun

[mass noun] Geology
Volcanic activity or phenomena: extensive volcanism occurred during the Ordovician in the Lake District and Wales
More example sentences
  • Carboniferous volcanism, occurring at converging plates margins, both at the Appalachian and at the Ouachita margins, was decidedly not tholeiitic.
  • This appears to contradict evidence from other areas, particularly Wales where subduction-related volcanism occurs in the late Tremadoc.
  • The scattered nature of the outcrop and the possibility of diachronous volcanism mean that all rocks grouped as Dokhan Volcanic Series may not be coeval.

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