What type of convergent boundary creates trenches?

What type of convergent boundary creates trenches?

When a continental plate meets an oceanic plate, the thinner, denser, and more flexible oceanic plate sinks beneath the thicker, more rigid continental plate. This is called subduction. Subduction causes deep ocean trenches to form, such as the one along the west coast of South America.

What is a oceanic oceanic convergent plate boundary?

An ocean-ocean convergent boundary occurs location where two oceanic plates come together and the denser plate sinks, or subducts, beneath the less dense plate, forming a deep ocean trench. Chains of volcanoes, called island arcs, form over subduction zone melting occurs where the subducting plate reenters the mantle.

How are oceanic ridges and deep ocean trenches related to plate tectonics?

Mantle convection drives plate tectonics. Hot material rises at mid-ocean ridges and sinks at deep sea trenches, which keeps the plates moving along the Earth’s surface.

Which is formed when oceanic plate converges with another oceanic plate?

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. Whenever a subduction zone is formed, the subducted plate will end up being partially melted by the earth’s internal magma and molten.

What type of plate boundary make deep oceanic trenches?

convergent plate boundaries
In particular, ocean trenches are a feature of convergent plate boundaries, where two or more tectonic plates meet. At many convergent plate boundaries, dense lithosphere melts or slides beneath less-dense lithosphere in a process called subduction, creating a trench.

How are oceanic oceanic and oceanic continental convergent boundaries different?

The oceanic plate is pushed under the continental plate and melted. 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.

What geologic events are possible with the oceanic oceanic convergence?

Effects that are found at this type of plate boundary include: a zone of progressively deeper earthquakes; an oceanic trench; a chain of volcanic islands; the destruction of oceanic lithosphere.

How are deep-ocean trenches related to plate boundaries quizlet?

How are deep-ocean trenches related to plate boundaries? Deep-ocean trenches are sites of plate convergence where an oceanic plate subducts under another plate. New oceanic crust and lithospheric mantle are generated by the cooling of molten rock upwelling from the mantle.

What happens to the oceanic crust at a deep-ocean trench?

What happens to oceanic crust at a deep-ocean trench? At a deep-ocean trench, the oceanic crust bends downward. In a process taking tens of millions of years, part of the ocean floor sinks back into the mantle at deep-ocean trenches.

What geologic process produces oceanic trench?

What happens to the oceanic crust at a deep ocean trench?

What are the three types of convergent boundary?

Convergent boundaries , where two plates are moving toward each other, are of three types, depending on the type of crust present on either side of the boundary — oceanic or continental . The types are ocean-ocean, ocean-continent, and continent-continent.