John Seach, Volcano Live

 Subduction Zone - John Seach
(Active continental margin)

A subduction zone is a region where the oceanic lithosphere descends into the mantle.
Subduction zones produce the majority of volcanoes observed by humans.
Subduction zone volcanoes are often explosive and are the world's most dangerous.
Subduction is the result of the old cold plate sinking below the overriding plate.

Subduction zones have the following features.
Lisopheric bulge, Deep ocean trench, Accretionary complex, Forearc basin,
Sedimentary arc, Volcanic island arc, Back arc basin, Back arc ridge.

Examples of subduction zone volcanoes.
Krakatau (Indonesia), Ambrym (Vanuatu), Usu (Japan)


Subduction Zone
Copyright John Seach