Share this entry

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

Definition of volcanism in English:

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.

Definition of volcanism in:

Share this entry

 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day doofus
Pronunciation: ˈduːfʌs
noun
a stupid person