What is the simple definition of subduction?

Definition of subduction

: the action or process in plate tectonics of the edge of one crustal plate descending below the edge of another.

What process is subduction?

Subduction occurs when two plates collide at a convergent boundary, and one plate is driven beneath the other, back into the Earth’s interior. Not all convergence leads to subduction. Continental rocks are too buoyant to be forced downward, so when continents collide, they crumple but stay at the surface.

What is subduction in plate tectonics?

When tectonic plates converge, one plate slides beneath the other plate, or subducts, descending into the Earth’s mantle at rates of 2-8 centimeters (1–3 inches) per year.

What is an example for subduction?

An oceanic plate can descend beneath another oceanic plate – Japan, Indonesia, and the Aleutian Islands are examples of this type of subduction. Alternately, an oceanic plate can descend beneath a continental plate – South America, Central America, and the Cascade Volcanoes are an example of this type of subduction.

What is the simple definition of subduction? – Related Questions

Which best describes subduction?

What sentence best describes subduction? One plate sinks beneath the other.

What is another word for subduction?

What is another word for subduction?
subtraction deduction
taking away lessening
markdown rollback
knock-off abstraction
discounting docking

What are the three types of subduction?

There are three types of convergent boundaries, and therefore, three types of subduction zones.
  • Ocean-ocean boundaries, where two oceanic plates converge with each other.
  • Ocean-continent boundaries, where an oceanic plate collides with a continental one.
  • Continent-continent boundaries, where two continents collide.
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What is a subduction zone for kids?

Subduction zones are convergent boundaries where at least one of the tectonic plates is an oceanic crust. The new oceanic crust that forms in spreading centers is recycled in these zones. Subducting oceanic plate. The oceanic crust melts as it descends into the lithosphere and upper mantle.

Where does subduction occur?

Subduction zones are where the cold oceanic lithosphere sinks back into the mantle and is recycled. They are found at convergent plate boundaries, where the oceanic lithosphere of one plate converges with the less dense lithosphere of another plate.

Does subduction cause volcanoes?

Volcanoes form here in two settings where either oceanic plate descends below another oceanic plate or an oceanic plate descends below a continental plate. This process is called subduction and creates distinctive types of volcanoes depending on the setting: ocean-ocean subduction produces an island-arc volcano.

Why does earthquake occur in subduction?

Why do so many earthquakes originate in this region? The belt exists along boundaries of tectonic plates, where plates of mostly oceanic crust are sinking (or subducting) beneath another plate. Earthquakes in these subduction zones are caused by slip between plates and rupture within plates.

What landform is created from the subduction?

Trenches. The deepest landforms on Earth are the trenches in the ocean. These landforms are created when one plate slides underneath another. This action is known as subduction.

Which types of boundaries produce subduction?

If two tectonic plates collide, they form a convergent plate boundary. Usually, one of the converging plates will move beneath the other, a process known as subduction.

What is the opposite of subduction?

What is the opposite of subduction?
accession addition
development enlargement
expansion growth
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How subduction cause the formation?

Due to the heat caused by it rubbing against the other plate as well as the natural heat of the mantle, the plate melts and turns into magma. The area where subduction occurs is known as the subduction zone. When one plate begins to slip underneath another one a trench is formed.

How many subduction zones are there?

There are 2 main types of subduction zones: Oceanic-oceanic plate boundaries: If the subducting plate subducts beneath an adjacent oceanic plate, an island arc is formed. Examples include the Aleutians, the Kuriles, Japan, and the Philippines, all located at the northern and western borders of the Pacific plate.

What plate is the largest?

The Hawaiian Islands were created by the Pacific Plate, which is the world’s largest plate at 39,768,522 square miles.

How deep are subduction zones?

Subduction zones are characterised by seismicity from the surface down to almost 700 km depth, and are often referred to as Wadati–Benioff zones (Benioff, 1949; Wadati, 1928, 1935). Seismicity is often classified as shallow (0–70 km), intermediate (70–300 km) and deep (300–700 km).

What does subduction produce on the surface?

Trenches, accretionary wedges (prisms) and volcanic or island arcs are key surface features produced by subduction.

What happens to subducted plates?

When a tectonic plate gets subducted, it sinks underneath another tectonic plate. The crust is heated and melts as it enters the mantle and the rock is recycled. As this is happening, the magma in the mantle may bubble up, forming volcanoes.

What type of volcanoes form at subduction zones?

The volcanoes produced by subduction zone volcanism are typically stratovolcanoes. Incipient island arcs tend to be more basaltic in composition, whereas mature continental volcanic arcs tend to be more andesitic in composition.


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