This is called a destructive plate boundary. It occurs due to the fact that the oceanic crust is far denser than the continental crust. As a result it subducts into the mantle and is incenerated.
Hope it helped:)
The denser oceanic crust is subducted under the less dense continental crust.
When the oceanic plate sinks it is absorbed back into the magma.
Oceanic to oceanic- one plate sinks under the other Oceanic- Continental ocean crust sinks under the other
sinks
The oceanic plate is forced below the continental, It sinks into the mantle. An oceanic trench is formed where it descnds. The plate melts as it sinks, due in part to friction between the plates. This produces earthquakes and volcanos, and as the magma tends to contain lots of volotiles, the volcanos are explosive.
There is no such thing as a subduction boundary, there are divergent, convergent, and transform boundaries. When there is a continental-oceanic convergent boundary (when a continental plate and an oceanic plate smash together) the oceanic plate, because it is more dense sinks into deeper layers of the earth. The area where the two plates meet makes a trench which is a subduction zone. The oceanic plate will melt into the earth and because of the excess lava it rises out onto the continent and makes a volcanic mountain and the lava erupts.
when oceanic crust and continental crust collide, the oceanic crust sinks down beneath the continental crust. this is called subduction.
When the oceanic plate sinks it is absorbed back into the magma.
The oceanic plate sinks into the mantle where it melts. This is replaced by new oceanic plate at the mid-oceanic ridge.
Subduction (I believe that's what you meant) occurs at CONVERGENT boundaries, where two plates collide and the less dense one remains and the denser one sinks. An example of subduction is two oceanic plates colliding. Oceanic plates contain mainly basalt, which is dense. The oceanic plate closer to a heat source (hot spot, volcano) would remain in place while the denser plate sinks (cold water is denser than hot water so it sinks) below the other. When an oceanic plate and a continental plate collide, the oceanic plate sinks because granite (what continental plates are composed of mainly) is less dense than basalt, therefore the oceanic plate would sink. However, when two continental plates collide, because both plates are made of granite and are not very dense, they push and shape the land into mountains.
Oceanic to oceanic- one plate sinks under the other Oceanic- Continental ocean crust sinks under the other
The colder, more dense plate is the one that subducts in a collision between two plates. In an oceanic to oceanic plate collision it is the older of the two plates that will subduct due to its higher density. In an oceanic to continental plate collision, it's the oceanic plate that will subduct because of its higher density.
sinks
because the oceanic plate is more heavier than contental plate so the oceanic plate sinks under the contental.
the oceanic crust is more dense therefore it sinks lower than continental crust
The oceanic plate is forced below the continental, It sinks into the mantle. An oceanic trench is formed where it descnds. The plate melts as it sinks, due in part to friction between the plates. This produces earthquakes and volcanos, and as the magma tends to contain lots of volotiles, the volcanos are explosive.
There is no such thing as a subduction boundary, there are divergent, convergent, and transform boundaries. When there is a continental-oceanic convergent boundary (when a continental plate and an oceanic plate smash together) the oceanic plate, because it is more dense sinks into deeper layers of the earth. The area where the two plates meet makes a trench which is a subduction zone. The oceanic plate will melt into the earth and because of the excess lava it rises out onto the continent and makes a volcanic mountain and the lava erupts.
As odd as it is to think of things this way, continental lithosphere is more buoyant than oceanic lithosphere. The oceanic lithosphere is more dense.