Definition: subduction zone: A place on the surface of the Earth where two plates move toward each other, and the oceanic plate plunges beneath the other tectonic plate.
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SUBDUCTION ZONE
A subduction zone is an area on a planet's crust in which the edge of an oceanic continental plate is being pushed beneath another plate.
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Subduction: The process describing when one lithospheric plate collides with and is overridden by, or descends under, an adjacent plate.
Sublimation: Phase transformation from solid to gas.
Subduction
the process of one lithospheric plate descending beneath another.
subduction zone: A region of a planetary crust where a tectonic plate slides downward.
subsolar point: The point on a planet that is directly below the sun.
Subduction - The process through which lithospheric plates of a planet or satellite are forced downward into the mantle ...
Subduction (Plate Divergence)
Label the subduction of an oceanic plate under a continental plate (plate convergence).
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Volcanos
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Subduction
In geology, subduction is the process that takes place at convergent boundary by which one tectonic plate moves under another tectonic plate, sinking into the Earth's mantle, as the plates converge....
The ease of subduction depends on age, velocity, the presence of a continent, etc.
Examples of ocean-continental plate subduction include the Juan de Fuca plate off the coast of northwestern United States subducting under the North American continental plate to create the Cascade Volcano range, ...
This contrasts strongly with Earth's more or less steady state of ongoing subduction and continential drift, but the venusian behavior corresponds well with Earth modeled then changed by removing the lubricant—the oceans.
The other type of volcano, found near areas of subduction, are Composite Volcanoes.
Billions of years ago basaltic lava on Earth was about that hot, but now -- thanks to mixing in subduction zones -- terrestrial basalts have a lower melting point. Lavas we see now on Earth are about 300 K cooler than they used to be.
It is characterized by two major processes: spreading and subduction. Spreading occurs when two plates move away from each other and new crust is created by upwelling magma from below.
These felsic protocontinents probably formed at hotspots rather than subduction zones, from a variety of sources: igneous differentiation of mafic rocks to produce intermediate and felsic rocks, ...
At other collision locations, called subduction zones, one plate slides under the other, ultimately to be destroyed as it sinks into the mantle. Subduction zones are responsible for most of the deep trenches in the world's oceans.
Where an oceanic plate collides with a continental plate, the oceanic plate tips down and slides beneath the continental plate forming a deep ocean trench (long, narrow, deep basin.) An example of this type of movement, called subduction, ...
Few underwater craters have been discovered because of the difficulty of surveying the sea floor; the rapid rate of change of the ocean bottom; and the "subduction" of the ocean floor into the Earth's interior by processes of continental drift.
When, over millions of years, seafloor rocks are transported back into the Earth's mantle at subduction zones - sites on the seafloor where tectonic plates have collided, forcing one plate beneath the other - they deliver more oxygen into the mantle.
Under the modern the theory of plate tectonics, some plates move away from each other and new crust is created by upwelling magma from below in a process called "spreading." Other plates are being destroyed through the process of "subduction, ...
Similarly plate tectonics, which cause earthquakes and volcanoes on Earth, are vital for life because they regulate the amount of carbon dioxide in our atmosphere (belching it out in volcanoes, and sucking it underground in subduction zones) as well ...
 See also: Earth, Ocean, Planet, Plate, Time
  
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