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If a plate of ocean crust plunged underneath a continental platewhat landforms do you expect to develop?
When the oceanic plate is subducted underneath the continental plate, the oceanic plate begins to melt. The molten material rises through the continental crust and a volcano forms.
What is a compressional boundary?
When an oceanic plate and a continental plate move towards each other the denser oceanic plate dives under the lighter continental one creating a deep ocean trench.As the oceanic plate goes deeper into the mantle, increased temperature and friction cause it to melt creating a subduction zone.Newly molten rock is lighter than the surrounding rock so it rises through the crust towards the surface.If molten rock (magma) reaches the earth's surface it may spread out along a fault line or it may erupt at a single point as a volcano.Example of an oceanic plate colliding with a continental plate is where the Pacific plate moving towards the South American plate at a rate of 9 centimetres per year.
What happens when continental plates collide?
This is called a constructive plate boundry. The oceanic plate will be pushed under by the continental plate, as it as thinner and denser. The friction can result in earthquakes and the heat from the friction will melt some of the oceanic plate. The pressure in the mantle will push the magma up to the surface, creating a volcano (creating land, therefore "constructive"). Hope this helped, just recently did tectonics in geography class.
How are mountains formed when a plated with an oceanic crust meets one with a cnotinental crust?
The oceanic plate is more dense than the continental plate, and will subduct, or move underneath, the lighter continental plate. The result is that the continental plate is uplifted. As the oceanic crust goes deeper and deeper, the temperatures become higher, causing the subducting crust to eventually melt into the mantel. The heat and gas pressure from the melting of the subducting crust may eventually seek release in the form of a volcano. The rate of crustal movement is slow, measured in a small number of inches per year, but the volcanism and crustal uplifting and folding eventually create mountains.
At which plate boundaries do most volcanoes form?
Most volcanoes form at a convergent plate boundary. Simply put when a oceanic plate and a continental plate hit each other face on the subduction of the oceanic plate causes the magma to rise and the converging of the plates makes a mountain and the magma rises through the top creating a volcano.
What happens if an oceanic to oceanic happens?
When an oceanic to oceanic happens, two oceanic plates converge and one of the plates subducts into a trench. The subducted plate sinks down into the mantle and begins to melt. Molten rock from the plate rises toward the surface and forms a chain of volcanic islands, also called a volcanic island arc, behind the trench in the ocean.
Does oceanic plate melt and cause volcanoes to erupt when slides under continental plate?
yes that's right
If a plate of ocean crust plunged underneath a continental platewhat landforms do you expect to develop?
When the oceanic plate is subducted underneath the continental plate, the oceanic plate begins to melt. The molten material rises through the continental crust and a volcano forms.
When two plates come together?
They fold up when there continental, creating mountains and steep hills. The Rocky's are a great example. Oceanic plate collisions cause tsunamis, and Oceanic plates are subducted under Continental plates, they are overlapped by the continental plate.
Where do subduction boundarys occur?
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.
How volcanoes are created from converging plates?
Volcanoes are formed when at least one of the plates colliding is a oceanic plate. The denser oceanic plate is forced underneath the less dense plate (usually continental) and starts to melt as it gets deeper into the Earth's core. Because the oceanic plate has water in it, the water turns into steam which then forces the melted plate back towards Earth's surface in the form of lava, creating a volcano.
What mountain range has an oceanic plate and continental plate colliding?
Fold mountains.
How does subduction effect Volcanoes?
Subduction zones involve an oceanic plate sliding beneath either a continental plateor another oceanic plate (that is, the subducted plate is always oceanic while the subducting plate may or may not be oceanic). Subduction zones are often noted for their high rates of volcanism, earthquakes, and mountain building. This is because subduction processes result in melt of the mantle that produces a volcanic arc as relatively lighter rock is forcibly submerged.
What is a compressional boundary?
When an oceanic plate and a continental plate move towards each other the denser oceanic plate dives under the lighter continental one creating a deep ocean trench.As the oceanic plate goes deeper into the mantle, increased temperature and friction cause it to melt creating a subduction zone.Newly molten rock is lighter than the surrounding rock so it rises through the crust towards the surface.If molten rock (magma) reaches the earth's surface it may spread out along a fault line or it may erupt at a single point as a volcano.Example of an oceanic plate colliding with a continental plate is where the Pacific plate moving towards the South American plate at a rate of 9 centimetres per year.
What happens when continental collides with continental crust?
The oceanic crust is force down into the mantle in a process called subduction. The subducting oceanic plate will introduce water into the hot mantle, causing some of the rock to melt. The molten rock will rise through the overriding continental crust to form volcanoes.
What happens when continental plates collide?
This is called a constructive plate boundry. The oceanic plate will be pushed under by the continental plate, as it as thinner and denser. The friction can result in earthquakes and the heat from the friction will melt some of the oceanic plate. The pressure in the mantle will push the magma up to the surface, creating a volcano (creating land, therefore "constructive"). Hope this helped, just recently did tectonics in geography class.
How do ocean trenches help explain why crust added at ocean ridges doesn't make earth any larger?
Ocean trenches were discovered as a sign of destructive plate margins. These plate margins cause oceanic crust to subduct below the continental crust at the oceanic-continental boundary, and force the oceanic crust to move down into the Earth's mantle and melt into basaltic magma. As this is happening, magma at oceanic ridges is creating new oceanic crust at the mid-oceanic ridges. Overall, these two processes cancel each other out and so the total amount of oceanic crust is staying aproximately the same. Therefore the Earth is not growing. Hope this helps :)
