Definition of island arc in English:

Share this entry

island arc

noun

Geology
A curved chain of volcanic islands located at a tectonic plate margin, typically with a deep ocean trench on the convex side.
Example sentences
  • The basalt-chert succession points more probably to an island arc developed on oceanic crust.
  • One model predicts tectonic wedging of the Solomon island arc beneath the Ontong Java plateau.
  • These units originated as an oceanic plateau possibly formed atop an island arc before being accreted onto the Cordilleran orogen.

For editors and proofreaders

Syllabification: is·land arc

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.