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When an oceanic to oceanic happens, two oceanic plates converge and one of the plates subducts into a trench. The subducted plate sinks down into the mantle and begins to melt. Molten rock from the plate rises toward the surface and forms a chain of volcanic islands, also called a volcanic island arc, behind the trench in the ocean.
The heavier/denser oceanic plate subducts the lighter, less - dense continental plate.
The colliding plate edges become crumpled to form a mountain range.
Tectonic
When plates move towards each other it is called a convergent boundary. The two types of plates converging depends on what happens. When it is oceanic/oceanic, both plates subduct (go downward), leading to the creating of trenches found at the depths of the ocean. When an oceanic plate converges with a continental plate, the more dense oceanic plate subducts under the continental plate, again creating trenches, and also leading to the destruction of the ocean floor. When continental plates converge, they tend to smash up and rise, creating mountains. When plates move apart, it is called a divergent boundary. When oceanic plates move apart, magma rises, cools, and solidifies to create new ocean floor. This, along with continental/oceanic convergence, accounts for seafloor spreading. When two continental plates diverge, the area left between them slowly turns into an ocean. For an example of this type of ocean, look at the Red Sea.
No. While only oceanic crust can subduct it is not always subducting. When two oceanic plates converge, only one of them subducts.
When an oceanic to oceanic happens, two oceanic plates converge and one of the plates subducts into a trench. The subducted plate sinks down into the mantle and begins to melt. Molten rock from the plate rises toward the surface and forms a chain of volcanic islands, also called a volcanic island arc, behind the trench in the ocean.
The heavier/denser oceanic plate subducts the lighter, less - dense continental plate.
The colder, more dense plate is the one that subducts in a collision between two plates. In an oceanic to oceanic plate collision it is the older of the two plates that will subduct due to its higher density. In an oceanic to continental plate collision, it's the oceanic plate that will subduct because of its higher density.
The colliding plate edges become crumpled to form a mountain range.
Tectonic
The colliding plate edges become crumpled to form a mountain range.
Subduction is when two plates collide, and one moves underneath the other, or subducts. The denser one is the one that subducts. Subduction is caused by the collision of two plates.
When plates move towards each other it is called a convergent boundary. The two types of plates converging depends on what happens. When it is oceanic/oceanic, both plates subduct (go downward), leading to the creating of trenches found at the depths of the ocean. When an oceanic plate converges with a continental plate, the more dense oceanic plate subducts under the continental plate, again creating trenches, and also leading to the destruction of the ocean floor. When continental plates converge, they tend to smash up and rise, creating mountains. When plates move apart, it is called a divergent boundary. When oceanic plates move apart, magma rises, cools, and solidifies to create new ocean floor. This, along with continental/oceanic convergence, accounts for seafloor spreading. When two continental plates diverge, the area left between them slowly turns into an ocean. For an example of this type of ocean, look at the Red Sea.
A convergent boundary with no subduction is a continental-continental boundary. Because oceanic crust is denser than continental crust, it is always the subducting plate in a oceanic-continental boundary. In an oceanic-oceanic boundary, one of the plates will subduct, depending on several factors. Continental plates are thicker and less dense than oceanic plates, and when they converge, they push up the area where the plates meet, forming mountain ranges (note that this is not the only, or even the predominant, method of mountain formation). The Himalayas are being formed as a result of a continental-continental boundary.
An undersea mountain chain where new ocean floor is produced
oceanic convergence is when two oceanic plates subduct beneath one another.