The volcanoes may have been similar to island arcs.

Interbeded between these layers were volcanic deposits, probably from an island arc.

An island arc was formed on the northern end of the 900 km long trench.

Offshore volcanoes form islands, resulting in a volcanic island arc.

These sediments accumulate within the basins on either side of an island arc.

It covered many small plates, Cretaceous island arcs and microcontinents.

These island arcs may be added to a continent during an orogenic event.

The result will be a new slow-growing island arc.

In most island arcs only a relatively small proportion of the individual volcanoes actually rise above sea level.

Honshu itself is formed from the island arc developed over the subducting plate.