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There are two mechanisms at such a site that can form islands. When two oceanic plates collide, one of them slides beneath the other and plunges into the mantle in a process called subduction. The subducting plate takes some water with it. This water seeps into the hot rocks of the mantle, allowing some of it to melt. This molten rock, called magma, can rise through the crust and form volcanoes that eventually build into islands.
Depending on the subduction rate sediment may be scraped off the top of the subducting plate and pile up into an accretionary prism. Parts of this may push above the ocean surface and form islands.
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Is the crust formed or destroyed at the sliding boundary?
At convergent boundaries are boundaries the crust is destroyed by subduction of oceanic crust underneath continental crust or other oceanic crust.
Is the crust formed or destroyed at a sliding boundary?
At convergent boundaries are boundaries the crust is destroyed by subduction of oceanic crust underneath continental crust or other oceanic crust.
What two types of plates does convergent boundaries involve?
There are two types of crust on Earth: oceanic and continental. A convergent plate boundary can involve two plates of oceanic crust, two of continental crust, or one of each.
How do divergent boundaries of oceanic crust form islands?
Collisions of plates
Subduction zones and what type of boundary do they represent?
Subduction zones represent convergent boundaries, where oceanic crust is being subducted under continental crust, or under a less dense oceanic crust.
Is the crust formed or destroyed at the sliding boundary?
At convergent boundaries are boundaries the crust is destroyed by subduction of oceanic crust underneath continental crust or other oceanic crust.
Is the crust formed or destroyed at a sliding boundary?
At convergent boundaries are boundaries the crust is destroyed by subduction of oceanic crust underneath continental crust or other oceanic crust.
Why does oceanic crust dive underneath continental crust?
This process is known as subduction and occurs at convergent plate boundaries because oceanic crust is denser than continental crust.
Crust is destroyed near?
Crust is destroyed at the convergent plate boundaries in Earth. In between the oceanic and continental plates, the subduction of the denser oceanic crust takes place.
What two types of plates does convergent boundaries involve?
There are two types of crust on Earth: oceanic and continental. A convergent plate boundary can involve two plates of oceanic crust, two of continental crust, or one of each.
How is the Earth's crust created and destroyed?
It is created at mid-oceanic ridges (divergent boundaries) and it is destroyed at subduction zones (convergent boundary between oceanic crust and continental crust).
How do divergent boundaries of oceanic crust form islands?
Collisions of plates
Where are the most plate bounderies?
Fault lines.
Subduction zones and what type of boundary do they represent?
Subduction zones represent convergent boundaries, where oceanic crust is being subducted under continental crust, or under a less dense oceanic crust.
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
What type of boundaries creates mountains?
Volcanic mountain ranges are formed from oceanic-continental convergent-subduction boundaries, much like with volcanic islands. When a plate is subducted, the crust forming this plate is heated and melted creating magma which erupts from the crust and creates volcanic mountain ranges.
What plate boundary are volcanic mountains on?
Stratovolcanoes are common at subduction zones, forming chains along plate tectonic boundaries where oceanic crust is drawn under continental crust. Examples are the Andes and the Aleutian Islands.
