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What else can I help you with?
Does subduction create or destroy oceanic crust?
In a subduction zone the crust is forced inot the mantle where it is eventually melted and destroyed
What happens when plates collide and one plate sinks?
The collision of plates commonly includes "subduction", where one plate is forced under the other, down into the mantle. These plates are melted and rise again, adding to the magma under the overlying plate. This creates heated rock that can later emerge through the surface in volcanoes. Oceanic plates are thinner and denser than continental plates, so are the ones forced down, either under a continental plate or another oceanic plate.
What is the rigid part of the tectonic plates that is made up of oceanic crust or continental crust and the upper mantle?
the lithoseshere
Why can continental crust displace more of the mantle than oceanic crust can?
the mantle is a hot ocean of lava basically and on it floats a series of tectonic plates, on the surface of the plates is the crust. there is your answer hope it helps.
How does the earths mantle differ from its crust?
Inner core: 2450 km thick Outer core: 2300 km thick Lower mantle: 2500 km thick Upper Mantle: 400 km thick continental crust: 30-70 km thick Oceanic Crust: 6 km thick
The process of an oceanic plate colliding with and decending underneath a continental plate?
When an oceanic plate collides with a continental plate, the denser oceanic plate is forced to subduct beneath the lighter continental plate. As the oceanic plate descends into the mantle, it creates a deep ocean trench at the boundary. The subduction process can result in volcanic activity, earthquakes, and the formation of mountain ranges on the overriding continental plate.
Why does oceanic lithosphere sub duct while continental lithosphere does not?
Oceanic lithosphere is dense enough to be forced down into the mantle. Continental lithosphere is not.
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 is the motion of plates in a subduction zone?
In a subduction zone, the dense, cold oceanic plate collides with the lighter, warmer continental plate and is forced down underneath it into the mantle. The motion is downwards and the force is called "slab pull".
When does the ocean floor collides with a crustal plate?
The ocean floor collides with a crustal plate during tectonic processes at convergent boundaries, where an oceanic plate subducts beneath a continental or another oceanic plate. This collision can lead to the formation of deep ocean trenches and volcanic arcs. The movement is driven by the Earth's mantle dynamics, causing the denser oceanic crust to be forced down into the mantle. This process is a key element in the recycling of Earth's materials and can trigger geological events like earthquakes.
What does the phrase 'the less buoyant plate is subducted' mean?
This means that the cooler, heavier oceanic plate at an oceanic to oceanic convergent boundary is forced into the mantle - under the hotter, lighter oceanic plate. OR At oceanic to continental boundary the heavier oceanic plate is forced into the mantle under the lighter continental plate.
What does the ocean plate do when it collides with continental plates?
When the oceanic plate collides with a continental plate, it is typically subducted underneath the continental plate due to its higher density. This subduction process can lead to the formation of deep oceanic trenches and volcanic arcs on the overriding continental plate. It also contributes to the recycling of oceanic crust back into the mantle.
What is the name of the process where ocean crust sinks back toward the mantle?
It is called subduction and only occurs in oceanic to oceanic or oceanic to continental plate collisions.
When continental plates collide what happens to the oceanic crust between them?
When continental plates collide, the denser oceanic crust is usually subducted beneath the less dense continental crust. This process can create subduction zones, where the oceanic crust is forced downward into the mantle. The oceanic crust may melt or be recycled back into the mantle in these subduction zones.
How does a ocean plate go under a continental plate?
The plates are moved by convection currents in the mantle. Oceanic plates are mainly composed of basalt or chemically similar rocks. These are more dense than most of the rocks of continental plates so, when the two collide, the denser plate will be overridden by the other and subducted.
What are the most common convergent boundaries?
Convergent plates are two tectonic plates that are colliding as they move toward each other. There are several types of converging plate boundaries.Oceanic to oceanic plate convergence:Where an oceanic plate collides with another oceanic plate, the more dense plate subducts into the mantle. The subduction results in the partial melting of lithospheric rock above the area of the subduction, causing underwater volcanoes to form. If the volcanoes grow to reach the surface, volcanic arc islands are formed. Oceanic to continental plate convergence:Where an oceanic plate collides with a continental plate, the oceanic plate is subducted due to the fact that it is more dense, which can also cause volcanism and mountain building. Continental to continental plate convergence:Where two continental plates collide, neither subducts into the mantle, the crust is thickened, and mountain ranges are formed from the thickening and uplift.
When does a part of oceanic plate sink into the mantle?
Usually when it meets another tectonic plate at a convergent plate boundary. If the oceanic plate converges with a continental plate the denser oceanic plate will be forced under the continental plate. If it converges with another oceanic plate the older (and therefore cooler and denser) plate will be forced under the younger plate.
