Question

the islands of japan, are an example of an island arc, which are formed by the of a denser oceanic tectonic plate sinking under a less dense oceanic tectonic plate. this also caused the creation of a .

Answer 1

convergent plate boundary

Japan has been situated in the convergent plate boundary during long geohistorical ages. This means that the Japanese islands are built under the subduction tectonics. The oceanic plate consists of the oceanic crust and a part of the mantle beneath it.