Which plate is most likely to be subducted?
When an oceanic plate converges with a continental plate, the oceanic crust will always subduct under the continental crust; this is because oceanic crust is naturally denser. Convergent boundaries are commonly associated with larger earthquakes and higher volcanic activity.
Why does the denser plate Subduct?
Oceanic & Continental Plates The oceanic plate is denser and sinks due to its lower buoyancy. It's sucked into the asthenosphere and is melted deeper into the Earth, called a subduction zone. The continental plate is less dense and floats over the top of it since it is more buoyant.
Why do some plates Subduct while others do not quizlet?
Since oceanic plates are denser than the continental plates, they will subduct to great depths when they converge with continental plates. When two oceanic plates converge, the denser of the two will subduct; whereas when two continental plates converge, neither will subduct.
Why does oceanic lithosphere Subducts underneath continental lithosphere at convergent boundary?
Ocean-Continent Convergence – Continental lithosphere is less dense than oceanic lithosphere so the latter always subducts beneath the former. Andesitic magma rises from the subduction zone to form a magmatic arc on the continental crust.
Where is subduction most likely to occur?
Subduction zones occur all around the edge of the Pacific Ocean, offshore of Washington, Canada, Alaska, Russia, Japan and Indonesia. Called the "Ring of Fire," these subduction zones are responsible for the world's biggest earthquakes, the most terrible tsunamis and some of the worst volcanic eruptions.
Where is one plate being subducted under another?
subduction zone Such destruction (recycling) of crust takes place along convergent boundaries where plates are moving toward each other, and sometimes one plate sinks (is subducted) under another. The location where sinking of a plate occurs is called a subduction zone.
What is subducting lithosphere?
Subduction is a geological process in which the oceanic lithosphere is recycled into the Earth's mantle at convergent boundaries. Where the oceanic lithosphere of a tectonic plate converges with the less dense lithosphere of a second plate, the heavier plate dives beneath the second plate and sinks into the mantle.
Why do some plates Subduct while others do not?
Not all convergence leads to subduction. Continental rocks are too buoyant to be forced downward, so when continents collide, they crumple but stay at the surface. Only oceanic plates, which are topped with basalt, are dense enough to sink into the mantle. As a result, only oceanic plates are subducted.
Which plate Subducts When oceanic and continental plates meet and why quizlet?
This type of convergent boundary happens where an oceanic plate and a continental plate push together causing the oceanic plate to be forced under the continental plate into the mantle because the oceanic plate is thinner. This is called a subduction.
Which type of lithosphere is denser and able to Subduct at convergent boundaries?
9. Only oceanic lithosphere is dense enough to be subducted at convergent boundaries. When continental lithosphere is pushed (by a ridge) and pulled (by a leading edge of subducting oceanic lithosphere) into another continent, a mountainous collision zone is formed, and the two plates involved become sutured together.
When oceanic lithosphere Subducts beneath oceanic lithosphere magma rises to the surface to form an?
Volcanoes and Plate Tectonics Directed Reading
| Question | Answer |
|---|---|
| If two plates with oceanic lithosphere collide?? | Magma forms as fluids are introduced into the mantle. |
| When oceanic lithosphere subducts beneath oceanic lithosphere, magma rises to the surface to form an?? | Island arc. |
When two plates form a subduction zone which plate will Subduct?
oceanic lithosphere Where two tectonic plates converge, if one or both of the plates is oceanic lithosphere, a subduction zone will form. An oceanic plate will sink back into the mantle.
When oceanic and continental plate collide the oceanic crust will always Subduct Why is this oceanic crust quizlet?
If two plates are pushing towards each other. At some convergent boundaries, an oceanic plate collides with a continental plate. Oceanic crust tends to be denser and thinner than continental crust, so the denser oceanic crust gets bent and pulled under, or subduct, beneath the lighter and thicker continental crust.
When oceanic plates Subduct what is likely to occur at the edge of the plate under which it Subducts quizlet?
Volcanic Island Arcs– when two oceanic plates collide and one oceanic plate subducts under the other creating a dip into the mantle pulling magma creating volcanoes.
What happens to the lithosphere when it Subducts?
Subduction is a geological process in which the oceanic lithosphere is recycled into the Earth's mantle at convergent boundaries. Where the oceanic lithosphere of a tectonic plate converges with the less dense lithosphere of a second plate, the heavier plate dives beneath the second plate and sinks into the mantle.
Is continental lithosphere denser than oceanic?
The oceanic lithosphere consists mainly of mafic crust and ultramafic mantle and is denser than the continental lithosphere, for which the mantle is associated with a crust made of felsic rocks.
Where is a subduction zone most likely to form?
Subduction zones are mainly located in the Pacific Ocean. This is because seafloor spreading – the process by which new oceanic crust is created – occurs mostly in the Pacific.
When two plates collide which is more likely to Subduct underneath the other?
When two oceanic plates collide, the older, heavier plate usually subducts beneath the other.
Which plate will Subduct after the collision of oceanic and continental crust explain why?
oceanic plate 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. Once again a benioff zone forms where there are shallow intermediate and deep focus earthquakes.
When an oceanic and continental plate collide the oceanic crust will always Subduct?
Plates Subduct When an ocean plate collides with another ocean plate or with a plate carrying continents one plate will bend and slide under the other. This process is called subduction. A deep ocean trench forms at this subduction boundary.
Can continental lithosphere Subduct?
Continental lithosphere is thicker than its oceanic counterpart, and does not subduct.
Under what two types of plates is the oceanic lithosphere being subducted?
They are found at convergent plate boundaries, where the oceanic lithosphere of one plate converges with the less dense lithosphere of another plate. The heavier oceanic lithosphere is overridden by the leading edge of the other plate.
Which would Subduct if continental or oceanic collide with each other?
Continental plates contain less dense rocks than oceanic ones, so the continental plates are more buoyant and the oceanic plates will subduct uopn collision.
Which plate will be subducted if they collide with each other and why?
Continental rocks are too buoyant to be forced downward, so when continents collide, they crumple but stay at the surface. Only oceanic plates, which are topped with basalt, are dense enough to sink into the mantle. As a result, only oceanic plates are subducted.
Do continental plates Subduct Why or why not?
Classic plate tectonics concepts suggested that continents do not subduct. Instead, when two continents collide at a convergent boundary following the consumption of an ocean by subduction, they accommodate the shortening within the lithosphere, which is thickened up to twice the normal values.
Which plate will Subduct after the collision of oceanic and continental crusts explain why?
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.
Do continental plates Subduct?
No it is not possible because the continental crust's density is lower. Conversely, oceanic plates can subduce under continental ones because they are heavier. This is because continental crusts are formed by granites and sedimentary materials.