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 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.
The region where the lithosphere pieces contact each other is called a subduction zone and a trench is formed there.
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.
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, ...
Subduction zones are places where two plates, usually an oceanic plate and a continental plate, collide. In this case, the oceanic plate subducts, or submerges under the continental plate forming a deep ocean trench just offshore.
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.
Both The mantle Basalt Granite Subduction zone Seafloor spreading Fold mountains Pangaea Alfred Wegener Glossopteris or Mesosaurus
Planets Around sunrise or sunset Venus Venus Yes Yes Yes No Strong (or extreme) seasons Yes 1930 ...
The trench is associated with a complex transition between the subduction zone to the south along the Lesser Antilles island arc and the major transform fault zone or plate boundary that extends west between Cuba and Hispanio...
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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.
The inner core composed of solid nickel-iron and some sulfur. The Earth's center of figure is offset from its center of mass by 2.1 km. There is no correlation between gravity and topography, although geoid highs are found at subduction zones.
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: Planet, Subduction, Earth, Ocean, Temperature
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