What Forms When Two Continental Plates Collide? | Sciencing
THE SPACE WHERE TWO TECTONIC PLATES MEET IS CALLED A PLATE BOUNDARY. Because there are different types of crust and different ways the crust. When two oceanic plates collide one oceanic plate is eventually subducted This benioff zone is a zone of shallow,intermediate and deep focused earthquakes. The magma that forms is andesitic in composition and begins to form when. Convergent boundaries include when two continental plates collide, two oceanic plates converge or when an oceanic plate meets a continental.
Ocean-Ocean Convergent Plate Boundaries ( Read ) | Earth Science | CK Foundation
The backarc region is located behind the arc and can be compressed or extended. Ocean-ocean collision zone Ocean-Continent Collisions When an oceanic and a continental plate collide, eventually the oceanic plate is subducted under the continental plate due to the high density of the oceanic plate.
Once again a benioff zone forms where there are shallow intermediate and deep focus earthquakes. As the oceanic plate is subducted sediment is scraped off to form an acretionary wedge at the point of collision between the two plates.
When the oceanic plate is subducted due to partial melting of the asthenosphere magma with an andesitic composition is formed. The magma formed is less dense than the surrounding material so it rises to the surface to form a magmatic arc on the edge of the continent which the oceanic plate is subducted under.
If two oceanic plates collide, what would happen? - Quora
Over time the continental margin, due to compression forms into a folded mountain belt. As time goes on the hot magma rising upward from the subduction zone causes further compression of the mountain belt.
Deep mountain roots form and are gradually metamorphosed and intruded with granitic plutons. Explosive volcanic activity is commonly associated with this type of collision boundary.
This is shown in the diagram below. The major componants of an oceanic - continental collision zone and a accretionary wedge are also shown in the diagrams below. Deformation at an ocean-continent collision zone Continent-Continent Collision When two continental plates collide neither plate can be subducted due to their high bouyancy.
With this type of collision there are no features such as a subduction zone, trench or acretionary wedge. The collision of two continental plates occurs when a sea becomes narrower until both plates collide.
Slip, Slide, & Collide
After collision the oceanic lithosphere breaks off and sinks into the mantle. The crust is thickened by the underthrusting of one continent under the other.
Illustration depicting how island arcs are formed.
A subduction zone is also generated when two oceanic plates collide — the older plate is forced under the younger one — and it leads to the formation of chains of volcanic islands known as island arcs. Since the collision and subduction of plates is not a smooth process, large, powerful earthquakes are another phenomenon that result from this type of interaction.
Earthquakes generated in a subduction zone can also give rise to tsunamis. A tsunami is a huge ocean wave caused by a sudden shift on the ocean floor, such as an undersea earthquake. If the wave reaches land, it can cause incredible destruction, like the Asian Tsunami, which killed more thanpeople in 11 countries across the Indian Ocean region in December Collision Zones and Mountains What happens when two continental plates collide?
Because the rock making up continental plates is generally lighter and less dense than oceanic rock, it is too light to get pulled under the earth and turned into magma.
What Is a Subduction Zone?
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. An example of this mountain-building process is the Himalayan range in southern Asia. Containing the highest mountain peaks in the world and traversing the modern-day countries of India, Pakistan, China TibetBhutan, and Nepal, the Himalayas were formed by the collision of the Indian and Eurasian Plates.
This process began after the breakup of Pangaea, when India became an island continent and began traveling northward toward Asia.