Which Type Of Lithosphere Would Be More Likely To Subduct And Why??
The oceanic lithosphere would subduct because it has a higher density at 3.0 grams per cubic centimeter. **Oceanic lithosphere which is basaltic has a higher density than continental lithosphere. Why are volcanic chains associated with convergent boundaries?
Which plate is more likely to Subduct?
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.
Which type of plate is subducted and why?
Why does the oceanic lithosphere Subduct?
Oceanic lithosphere subducts because its overall density is greater than that of the underlying mantle. … -The oceanic lithosphere is denser than the continental lithosphere so it subducts. That means it gets shoved down underneath the overriding plate.
When oceanic and continental lithosphere meet which plate will Subduct and why?
In this case the older denser slab of oceanic crust will plunge beneath the less dense one . If the two plates that meet at a convergent plate boundary both are of oceanic crust the older denser plate will subduct beneath the less dense plate.
Under what two types of plates is the oceanic lithosphere being subducted?
When oceanic crust converges with continental crust the denser oceanic plate plunges beneath the continental plate. This process called subduction occurs at the oceanic trenches (figure 6). The entire region is known as a subduction zone. Subduction zones have a lot of intense earthquakes and volcanic eruptions.
Which plate will Subduct after the collision of oceanic and continental crust?
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.
What property of the subducted lithosphere allows for earthquakes to occur at mantle depths?
As the slab descends into the mantle rheology changes (viscosity characteristics) cause the plate to bend and deform and generates these earthquakes. The trend of such events can be seen in cross-sections of subduction zones and are known as “Wadati-Benioff Zones”.
Why do some plates Subduct while others do not?
The tectonic plates grate against each other which often causes earthquakes. The plate that slips under does not stay that way. Due to the heat caused by it rubbing against the other plate as well as the natural heat of the mantle the plate melts and turns into magma.
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. Remember oceanic plates are formed from mantle material at midocean ridges.
Why does continental lithosphere not Subduct?
7.03. 7.2 Inhomogeneous Cooling/Continents. Continental lithosphere is thicker than its oceanic counterpart and does not subduct. Its crust is also richer in radiocative elements.
Why does oceanic lithosphere Subduct under continental lithosphere whereas continental lithosphere does not Subduct under oceanic lithosphere quizlet?
Why does oceanic lithosphere subduct under continental lithosphere whereas continental lithosphere does not subduct under oceanic lithosphere? The oceanic lithosphere is thinner and denser than the continental lithosphere which is thicker and less dense.
Why can oceanic lithosphere be subducted but continental lithosphere Cannot?
The oceanic lithosphere is thicker and denser than the continental lithosphere which is thinner and less dense. … Due to mountains and land relief on the continental lithosphere it is heavier than oceanic lithosphere pushing it downwards into the mantle.
Do continental plates ever get subducted?
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.
What is the main material being subducted at an ocean-continent?
What is the main material being subducted at an ocean-continent convergent boundary? (Oceanic lithosphere is more dense than continental lithosphere so when the two meet the one that is denser will be subducted.) What are two differences between oceanic crust and continental crust?
What is the main material being subducted at an ocean-continent convergent boundary?
Dense oceanic crust will subduct beneath continental crust or a less dense slab of oceanic crust. The oceanic plate subducts into a trench resulting in earthquakes. Melting of mantle material creates volcanoes at the subduction zone.
When two oceanic plates collide and one gets subducted Where is the most likely place the island arc will form?
When two oceanic plates converge one is usually subducted under the other what is formed?
As with oceanic-continental convergence when two oceanic plates converge one is usually subducted under the other and in the process a trench is formed.
Which plate undergoes subduction at oceanic continental plate boundaries?
Ocean-Continent Convergence
Oceanic crust may collide with a continent. The oceanic plate is denser so it undergoes subduction. This means that the oceanic plate sinks beneath the continent. This occurs at an ocean trench (Figure below).
When tectonic plates collide the thicker more buoyant continental plate is always subducted beneath the thinner more dense oceanic plate?
In the theory of tectonic plates at a convergent boundary between a continental plate and an oceanic plate the denser plate usually subducts underneath the less dense plate. It is well known that oceanic plates subduct under continental plates and therefore oceanic plates are more dense than continental plates.
When oceanic lithosphere collides with another plate the in the process of subduction?
When two oceanic lithospheres collide one runs over the other which causes the latter to sink into the mantle along a zone called a subduction zone. The subducting lithosphere is bent downward to form a very deep depression in the ocean floor called a trench. The deepest ocean in the world is found along trenches.
What makes up the lithosphere?
The lithosphere is the rocky outer part of the Earth. It is made up of the brittle crust and the top part of the upper mantle. The lithosphere is the coolest and most rigid part of the Earth.
Which plate is being subducted beneath western South America?
What is an example of a subduction zone?
How do subduction zones cause earthquakes?
What happens to subducted plates?
When a tectonic plate gets subducted it sinks underneath another tectonic plate. The crust is heated and melts as it enters the mantle and the rock…
What is the subducted tectonic plate beneath the ring of fire?
In South America the Ring of Fire is the result of the Antarctic Plate the Nazca Plate and the Cocos Plate being subducted beneath the South American Plate.
When oceanic crust and continental crust collide which will Subduct and why?
Oceanic Crust is more dense than Continental Crust
When they collide the Oceanic crust sinks below the continent. As it sinks it heats up at the edge of the mantle and begins to melt.
Where are subduction zones likely to form?
Why does partial melting occur at subduction zones?
Terms in this set (39) When does partial melting occur at subduction zones? … As they decompress they remain warm but the lower amount of pressure at shallower level crust lowers their melting point and partial melting occurs.
Which of the following is produced when the subduction zone is formed?
These plates collide slide past and move apart from each other. Where they collide and one plate is thrust beneath another (a subduction zone) the most powerful earthquakes tsunamis volcanic eruptions and landslides occur.
Why does the oceanic lithosphere Subduct?
Oceanic lithosphere subducts because its overall density is greater than that of the underlying mantle. … -The oceanic lithosphere is denser than the continental lithosphere so it subducts. That means it gets shoved down underneath the overriding plate.
What is Lithos in lithosphere?
The lithosphere includes the Earth’s crust and the uppermost part of the mantle. … Slight movements in the lithosphere can cause earthquakes when the plates bump against each other. “Litho” is from the Greek word lithos meaning stone.
What is continental lithosphere and oceanic lithosphere?
The continental lithosphere is thicker (about 150 km). … 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.
Types of Plate Boundaries
Lithosphere & Asthenosphere
Subduction zones: birth and death of lithosphere (class 21 -V1)
2 What is crust What is lithosphere