Quick Answer: Is Tsunami Possible When Two Oceanic Plates Collide?

What happens when two oceanic plates collide?

When two oceanic plates converge, the denser plate will end up sinking below the less dense plate, leading to the formation of an oceanic subduction zone.

Old, dense crust tends to be subducted back into the earth.

An example of a subduction zone formed from a convergent boundary is the Chile-Peru trench..

What happens when plates slide past each other?

When oceanic or continental plates slide past each other in opposite directions, or move in the same direction but at different speeds, a transform fault boundary is formed. No new crust is created or subducted, and no volcanoes form, but earthquakes occur along the fault.

What is the difference between oceanic plates and continental plates?

Continental plates are much thicker that Oceanic plates. At the convergent boundaries the continental plates are pushed upward and gain thickness. The rocks and geological layers are much older on continental plates than in the oceanic plates. The Continental plates are much less dense than the Oceanic plates.

What happens when two oceanic plates collide quizlet?

When two oceanic plates collide, the denser plate is subducted and some material rises upward and forms an ISLAND. … Ocean floor is pushed away from a midocean ridge to form new sea floor.

Why are subduction zone earthquakes the most powerful?

Subduction zones are plate tectonic boundaries where two plates converge, and one plate is thrust beneath the other. This process results in geohazards, such as earthquakes and volcanoes. … This zone ‘locks’ between earthquakes, such that stress builds up. It is then released catastrophically in one or more earthquakes.

What are the 3 types of convergent boundary?

There are three types of convergent boundaries: Oceanic-Continental Convergence. Oceanic-Oceanic Convergence. Continental-Continental Convergence.

Why are most oceanic trenches in the Pacific?

A: Most oceanic trenches are found in the Pacific Ocean because that is where the subduction zones are, which is when two plates meet and one gives way to the other. Trenches form at these subduction zones where the one plate is sliding underneath the other.

What happens to continental crust when two continents collide?

When two plates carrying continents collide, the continental crust buckles and rocks pile up, creating towering mountain ranges. … When an ocean plate collides with another ocean plate or with a plate carrying continents, one plate will bend and slide under the other. This process is called subduction.

What does seafloor spreading look like?

Seafloor spreading is a geologic process in which tectonic plates—large slabs of Earth’s lithosphere—split apart from each other. Seafloor spreading and other tectonic activity processes are the result of mantle convection. … The less-dense material rises, often forming a mountain or elevated area of the seafloor.

What is an example of an oceanic oceanic convergent boundary?

Examples of ocean-ocean convergent zones are subduction of the Pacific Plate south of Alaska (creating the Aleutian Islands) and under the Philippine Plate, where it creates the Marianas Trench, the deepest part of the ocean.

Can two oceanic plates collide?

When two oceanic plates collide one oceanic plate is eventually subducted under the other. Where one plate slides under the other is referred to as the ‘subduction zone’. As the subducting plate descends into the mantle where it is being gradually heated a benioff zone is formed.

What happens when two plates collide along a subduction zone?

These boundaries mark the collision between two of the planet’s tectonic plates. The plates are pieces of crust that slowly move across the planet’s surface over millions of years. Where two tectonic plates meet at a subduction zone, one bends and slides underneath the other, curving down into the mantle.

Which boundaries is seafloor destroyed?

The seafloor is destroyed at a COnvergent Boundary.

What are the three types of boundaries?

There are three main types of plate boundaries:Convergent boundaries: where two plates are colliding. Subduction zones occur when one or both of the tectonic plates are composed of oceanic crust. … Divergent boundaries – where two plates are moving apart. … Transform boundaries – where plates slide passed each other.

What does Oceanic Oceanic form?

Oceanic – oceanic convergence This water reduces the melting temperature of rocks in the asthenosphere and causes partial melting. Partial melt will travel up through the asthenosphere, eventually, reach the surface, and form volcanic island arcs.