Table of Contents
What happens during an oceanic oceanic collision?
An oceanic convergent plate boundary forms where two plates collide. In these collisions, one plate sinks beneath the other. A subduction zone forms along the boundary where the denser plate sinks into the mantle and is heated, causing plumes of molten magma to rise upward through the top plate.
What does oceanic oceanic collision mean?
Oceanic – oceanic convergence In collisions between two oceanic plates, the cooler, denser oceanic lithosphere sinks beneath the warmer, less dense oceanic lithosphere. As the slab sinks deeper into the mantle, it releases water from dehydration of hydrous minerals in the oceanic crust.
What happens when an oceanic plate converges with another plate?
When two oceanic plates converge, the denser plate will end up sinking below the less dense plate, leading to the formation of an oceanic subduction zone. Old, dense crust tends to be subducted back into the earth. An example of a subduction zone formed from a convergent boundary is the Chile-Peru trench.
What happens when oceanic plate and continental plate collide?
When an oceanic and a continental plate collide, eventually the oceanic plate is subducted under the continental plate due to the high density of the oceanic plate. As time goes on the hot magma rising upward from the subduction zone causes further compression of the mountain belt.
What happens when Oceanic and continental plates collide?
(The Himalayas were formed by the collision of the Indo-Australian Plate with the Eurasian Plate). When an oceanic plate and a continental plate collide, the oceanic plate moves beneath the continental plate in a process known as subduction.
What happens when one plate slides under the other?
Where one plate slides under the other is referred to as the ‘subduction zone’. As the subducting plate descends into the mantle where it is being gradually heated a benioff zone is formed. This benioff zone is a zone of shallow,intermediate and deep focused earthquakes.
How deep does the ocean collision boundary have to be?
Some deep focused earthquakes that occur at ocean ocean- collision boundaries can be as deep as 670 kilometres. As the subducted plate descends into the mantle it is gradually heated allowing the formation of magma.
What are the major componants of oceanic-continental collision zone?
Deep mountain roots form and are gradually metamorphosed and intruded with granitic plutons.Explosive volcanic activity is commonly associated with this type of collision boundary. This is shown in the diagram below.The major componants of an oceanic – continental collision zone and a accretionary wedge are also shown in the diagrams below.