Often asked: What Does Subduction Mean In Science?

What is definition of subduction?

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

What is an example of 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’s another word for subduction?

What is another word for subduction?

subtraction deduction
deletion detraction
discount removal
withdrawal abatement
rebate stoppage

Where is the subduction zone?

Subduction zones occur all around the edge of the Pacific Ocean, offshore of Washington, Canada, Alaska, Russia, Japan and Indonesia. Called the ” Ring of Fire,” these subduction zones are responsible for the world’s biggest earthquakes, the most terrible tsunamis and some of the worst volcanic eruptions.

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What is subduction and what causes it?

Subduction occurs when two plates collide at a convergent boundary, and one plate is driven beneath the other, back into the Earth’s interior. When an oceanic plate collides with a continental plate, the denser oceanic plate is bent downward and slides under the edge of the continent.

What causes subduction?

Subduction is a process in geology where one tectonic plates slides underneath another one and merges into the Earth’s mantle. The plate that slips under does not stay that way. 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.

What are 2 examples of subduction zones?

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 are the two types of subduction zones?

Features & Location of Subduction Zones There are two kinds: oceanic plates and continental plates.

What are the features of a subduction zone?

Three main features are associated with subduction zones.

  • Oceanic Trenches. Oceanic trenches are formed at subduction zones.
  • Volcanic Arcs. Volcanic arcs form parallel to subduction zones.
  • Earthquakes. Earthquakes occur along the subduction zone.
  • Other Subduction Features.

What is definition of lithosphere?

The lithosphere is the rocky outer part of the Earth. It is made up of the brittle crust and the top part of the upper mantle. The lithosphere is the coolest and most rigid part of the Earth.

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What happens when two continental plates collide?

What happens when two continental plates collide? Instead, a collision between two continental plates crunches and folds the rock at the boundary, lifting it up and leading to the formation of mountains and mountain ranges.

What’s it called when one plate goes under another?

When one tectonic plate is forced under another tectonic plate, the area this occurs is called a subduction zone.

What is created at a subduction zone?

Where two tectonic plates converge, if one or both of the plates is oceanic lithosphere, a subduction zone will form. An oceanic plate will sink back into the mantle. Remember, oceanic plates are formed from mantle material at midocean ridges.

Why does earthquakes occur in subduction zone?

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.

Why do subduction zones have the biggest earthquakes?

Eventually stresses exceed the fault’s strength and it breaks free, releasing the stored energy as seismic (shaking) waves in an earthquake. The massive size of these faults produce the largest earthquakes on Earth.

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