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When oceanic crust is pushed down at a trench, it undergoes a process called subduction. This involves the denser oceanic plate sinking beneath a lighter continental or another oceanic plate, leading to the formation of deep oceanic trenches. As the crust descends, it can cause geological phenomena such as earthquakes and volcanic activity, as the subducting plate melts and interacts with the mantle. Eventually, the material may contribute to the formation of magma, which can lead to volcanic eruptions above the subduction zone.
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Which feature is commonly formed at a plate boundary where oceanic crust converges with continental crust?
A deep ocean trench is commonly formed at a plate boundary where oceanic crust converges with continental crust. The oceanic crust is denser and is forced beneath the lighter continental crust, creating a deep trench.
What happens when heavier oceanic crust converges with lighter crust at a deep ocean trench?
When heavier oceanic crust converges with lighter crust at a deep ocean trench, the heavier oceanic crust is usually forced under the lighter crust in a process known as subduction. This can create deep ocean trenches and volcanic arcs on the overriding plate. The subducting plate can also melt and cause volcanic activity.
What are convertgent boundaries?
A conversion boundary is a place where 2 tectonic plates are mving toward each other. There are 3 types of convergent boundaries OCEANIC CRUST-OCEANIC CRUST OCEANIC CRUST-CONTINENTAL CRUST CONTINENTAL CRUST-CONTINENTAL CRUST They are classified according to their crust
If the east pacific rise is the source of new rock which trench would contain the oldest rock?
The oldest rock would be found in the Mariana Trench, which is located in the western Pacific Ocean. As the East Pacific Rise creates new oceanic crust through seafloor spreading, the older crust moves away from the ridge and eventually gets subducted at trenches like the Mariana Trench. This process results in the trench containing some of the oldest oceanic rock, as it represents the remnants of the Earth's crust that have been pushed into the subduction zone.
What type of crust does Mt st helens have?
Mount St. Helens has an oceanic crust. It is part of the Cascadia Subduction Zone, where oceanic crust is being pushed beneath the North American tectonic plate.
What happens when a heavier oceanic crust collides with a continental crust?
Trench
What happens to two oceanic crust when they collide?
the older crust is subducted and later pushed up to form oceanic arcs
What is form when oceanic crust is pushed under continental crust?
When oceanic crust is pushed under continental crust in a subduction zone, a deep trench is formed at the boundary between the two plates. The oceanic crust then descends into the mantle, creating a convergent plate boundary. This process can lead to the formation of volcanic arcs on the overriding continental plate.
What happens at an oceanic- oceanic subduction?
The plate with cooler, denser crust sinks under the other plate, forming a trench. There, the oceanic crust sinks down back into the mantle.
What happens at oceanic-oceanic subduction?
The plate with cooler, denser crust sinks under the other plate, forming a trench. There, the oceanic crust sinks down back into the mantle.
What happens when an oceanic plate collides with a continental plate?
when oceanic crust and continental crust collide, the oceanic crust sinks down beneath the continental crust. this is called subduction.
Where is old crust pushed down into a trench?
subdution zone
Which feature is commonly formed at a plate boundary where oceanic crust converges with continental crust?
A deep ocean trench is commonly formed at a plate boundary where oceanic crust converges with continental crust. The oceanic crust is denser and is forced beneath the lighter continental crust, creating a deep trench.
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.
What happens with a plate of oceanic crust collides with a plate of continental 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.
How does trench formed?
They form when the oceanic crust goes under the Continental crust. The oceanic crust then forms the trenches through a process called subduction.
How does a trench forms?
They form when the oceanic crust goes under the Continental crust. The oceanic crust then forms the trenches through a process called subduction.
