How does subduction occur?

Answer 1

A plate will subduct for tens to hundreds of millions of years.

Answer 2

a subduction zone is a convergent boundary where two tectonic plates collide.

Answer 3

Subduction occurs when two plates collide and one plunges beneath the other. The two plates are Oceanic plate and Continental plate. Oceanic plate sinks, because it's denser than the Continental plate.

where crust is destroyed

Answer 4

Geologically speaking, trenches are long narrow undersea structures representing the point of subduction of a denser oceanic plate when colliding with a less dense oceanic plate or continental plate. Heavy, dense, and old oceanic crust is drawn under the less dense plate when the two colliding plates are traveling toward each other in a convergent plate boundary scenario. The subducting plate travels downward and into the mantle where the presence of water in the subducting plate causes melting, along with the rising of magma through the crust, most likely producing volcanism.

Answer 5

The pressure of one plate overcomes the forces of friction against the other plate which had priorly been holding it in place. For a brief moment it slides forward and down into the mantle, until enough friction has built up and enough momentum has bled off to allow another lock up between the plates.

Answer 6

Subduction occurs when two tectonic plates meet, and clash together, either causing a trench in the ocean. The size of the trench depends on what kind of plates are bumping together. When subduction occurs, the more dense plate will sink, and the less dense plate will go over the dense one. The sinking plate causes a trench in the ocean floors near the plate.

Answer 7

A subduction zone occurs when a continental plate collides with an oceanic plate. The more dense oceanic plate is forced down, and eventually it melts. The less dense, granitic continental plate is forced up. In these regions, we tend to get high mountains, earthquakes and volcanoes.

Answer 8

Because it is the subduction process that actually causes the trenches. The cold oceanic crust sinking back into the mantle pulls down the sea bead.