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Describe what happens in the three different kinds of plate collisions?
Subduction (where one plate is forced beneath another less dense plate - may occur at oceanic-oceanic and oceanic-continental boundaries), obduction (where oceanic plate is forced over a continental plate) and orogenesis where two continental plates collide and mountains are formed (e.g. the Himalayas).
What takes place when one plate is forced down into the mantle beneath another plate?
Subduction! :)
What happens when two plates carrying oceanic crust collides?
When two oceanic crusts collide, the older plate is forced under the younger one and is pulled under it, forming a subduction zone. This leads to the formation of chains of volcanic islands known as island arcs.
When 1 plate is forced beneath another?
Subduction
What does the phrase 'the less buoyant plate is subducted' mean?
This means that the cooler, heavier oceanic plate at an oceanic to oceanic convergent boundary is forced into the mantle - under the hotter, lighter oceanic plate. OR At oceanic to continental boundary the heavier oceanic plate is forced into the mantle under the lighter continental plate.
What are the types of collisions that happen at convergent boundaries?
Subduction (where one plate is forced beneath another less dense plate - may occur at oceanic-oceanic and oceanic-continental boundaries), obduction (where oceanic plate is forced over a continental plate) and orogenesis where two continental plates collide and mountains are formed (e.g. the Himalayas).
What forms when one oceanic plate is forced beneath another plate a rift valley an ocean basin an ocean ridge a subduction zone?
a subduction zone
What forms when one oceanic plate is forced beneath another plate a. an ocean basin b. an ocean ridge c. a subduction zone d. a rift valley?
C. subduction zone
When does a part of oceanic plate sink into the mantle?
Usually when it meets another tectonic plate at a convergent plate boundary. If the oceanic plate converges with a continental plate the denser oceanic plate will be forced under the continental plate. If it converges with another oceanic plate the older (and therefore cooler and denser) plate will be forced under the younger plate.
What is it called when one oceanic plate is forced beneath another plate?
Subduction.This specific process occurs at a destructive plate margin.The oceanic plate subducts at around 25-45 degrees into the mantle and the friction produced between the two plates triggers earthquakes.
Why do oceanic plates subduct?
Bacause they are composed of material that is denser than that of the continental crust. As such ocernic crust is less bouyant than contiental crust and so where oceanic crust collides with continental crust, the oceanic srust tends to be forced beneath the continetal crust.
What happens when a plate carrying oceanic oceanic crust collides with a plate carrying continental crust?
The contiental cdrust is forced under the continental crust in a process called subduction.
What boundary is it when 2 oceanic plates move under each other?
The boundary is known as the Subduction Zone. One plate is forced down beneath the other and into the mantle.
Process where one of Earth's plates is forced beneath the edge of another?
subduction zone
What takes place when one plate is forced down into the mantle beneath another plate?
Subduction! :)
Describe what happens in the three different kinds of plate collisions?
Subduction (where one plate is forced beneath another less dense plate - may occur at oceanic-oceanic and oceanic-continental boundaries), obduction (where oceanic plate is forced over a continental plate) and orogenesis where two continental plates collide and mountains are formed (e.g. the Himalayas).
Where is the oceanic crust sinking into mantle?
Usually when it meets another tectonic plate at a convergent plate boundary. If the oceanic plate converges with a continental plate the denser oceanic plate will be forced under the continental plate. If it converges with another oceanic plate the older (and therefore cooler and denser) plate will be forced under the younger plate.
