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Subducted oceanic crust refers to the portion of the Earth's oceanic lithosphere that is forced beneath another tectonic plate into the mantle at convergent plate boundaries. This process occurs because oceanic crust is denser than continental crust, causing it to sink when the two plates collide. As the oceanic crust subducts, it can lead to geological phenomena such as the formation of deep ocean trenches, volcanic arcs, and earthquake activity. The subduction process also contributes to the recycling of materials within the Earth's interior.
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When does a plate carrying continental crust converges with a plate carrying oceanic crust?
When a plate carrying continental crust converges with a plate carrying oceanic crust, the denser oceanic plate is typically subducted beneath the less dense continental plate. This can lead to the formation of volcanic arcs and deep ocean trenches.
What happens to the old oceanic crust as new molten material rises from the mantle?
The older oceanic crust moves away from the spreading center and is eventualy subducted back into the mantle.
What is likely to form where oceanic crust is subducted under continental crust?
Where oceanic crust is subducted under continental crust, a trench, volcanic arc, and earthquakes are likely to form. The subduction of the dense oceanic plate causes it to sink beneath the less dense continental plate, leading to the creation of these geological features due to the intense heat and pressure generated in the process.
Where are the elder parts of the ocean floor located?
Oceanic crust is created at mid-ocean ridges and (through the creation of new oceanic crust) is pushed toward a convergent plate boundary where it is subducted. So the oldest oceanic crust would be located at a convergent plate boundary where the oceanic crust is being subducted under continental crust.
Why is the oceanic plate subducted when an oceanic plate collides with a continental plate?
The Oceanic plate is subducted under the Continental plate because oceanic crust is much more dense than continental crust. The average density of the oceanic crust is 3g/cm^3 while the average density of continental crust is 2.7g/cm^3.
What happens to two oceanic crust when they collide?
the older crust is subducted and later pushed up to form oceanic arcs
What kind of crust usually goes into the mantle?
Oceanic crust gets subducted into the mantle.
What do one oceanic and one continental crust produce when the oceanic crust is subducted under the continental one?
A trench and a strata volcano.
Why is oceanic crust younger than the continental crust?
oceanic crust is constantly being subducted and replaced with new material at places like the mid Atlantic ridge.
Convegent boundarie what changes to the crust occur?
The crust is compressed into mountains (if it is continental crust) or subducted back into the mantle if it is oceanic crust.
Why oceanic crust is always subducted underneath continental crust?
Oceanic crust is denser than continental crust, so when they collide, the denser oceanic crust is forced beneath the lighter continental crust in a process known as subduction. This subduction occurs at convergent plate boundaries where two plates are moving towards each other. The sinking oceanic crust can trigger volcanic activity and create mountain ranges on the continental crust.
When does a plate carrying continental crust converges with a plate carrying oceanic crust?
When a plate carrying continental crust converges with a plate carrying oceanic crust, the denser oceanic plate is typically subducted beneath the less dense continental plate. This can lead to the formation of volcanic arcs and deep ocean trenches.
What happens to old oceanic crust as molten materials rises from the mantle?
The older oceanic crust moves away from the spreading center and is eventualy subducted back into the mantle.
What happens to old oceanic crust as new molten material from the mantle?
The older oceanic crust moves away from the spreading center and is eventualy subducted back into the mantle.
What happens when a plate of oceanic crust collides with a plate of oceanic crust?
The oceanic plate is made of denser (and thinner) rock than the continental crust, so the oceanic plate gets subducted (pushed underneath) where it descends and gets melted by geothermal heat.
Where does the oceanic crust eventually go?
It is subducted toward the core and eventually melts, forming magma.
What happens to old oceanic crust as new molten material rises to the mantle?
The older oceanic crust moves away from the spreading center and is eventualy subducted back into the mantle.
