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VOLCANIC ISLAND ARC [1 record]

Record 1 2011-05-30

English

Subject field(s)
  • Vulcanology and Seismology
  • Geomorphology and Geomorphogeny
  • Plate Tectonics
DEF

A linear or arc-shaped chain of volcanic islands formed on the seafloor at a convergent plate boundary.

OBS

There are two types of volcanic arcs: oceanic arcs (commonly called island arcs, a type of archipelago) and continental arcs. In the former, oceanic crust subducts beneath other oceanic crust on an adjacent plate, while in the latter case the oceanic crust subducts beneath continental crust.

OBS

island arc; volcanic island arc: terms used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Volcanologie et sismologie
  • Géomorphologie et géomorphogénie
  • Tectonique des plaques
DEF

Alignement linéaire ou arqué d’îles volcaniques formées sur le fond marin à la limite de plaques convergentes.

CONT

Un arc insulaire résulte de la convergence de deux plaques lithosphériques océaniques.

CONT

Cet arc [volcanique] peut constituer une chaîne montagneuse (ex. cordillère des Andes) ou bien être en partie immergé et former un chapelet d'îles et de hauteurs sous-marines nommé arc insulaire (ou guirlande insulaire) [...]

OBS

arc insulaire; guirlande insulaire : termes en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

Campo(s) temático(s)
  • Vulcanología y sismología
  • Geomorfología y geomorfogénesis
  • Tectónica de placas
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