describe what happens to plate a as it collides with plate b
Answers
Answer:
When the Plate A and Plate B collide, a volcanic arc forms at the continental plate edge.
Explanation:
Plate a as it collides with plate b
Explanation:
- As plate A continues to move downwards going to the mantle. The leading edge of plate A will melt and turns into magma. Magma rise up to the surface to form volcanoes. The leading edge melts due to high temperature in the mantle which capable of melting the lithosphere.
- Three types of Convergent boundary
Continental to oceanic convergence
Oceanic to oceanic convergence
Continental to continental convergence
Continental to oceanic convergence
- Oceanic plate will subduct beneath the continental plate since it is more denser. Several geological features will formed because of this convergence. Philippine Islands are also a product of continental to oceanic plate convergence, wherein Eurasian plate collides with Philippine sea plate which produces volcanic islands creating Philippines Island.
- Oceanic to oceanic convergence: The geological features formed in this convergence is similar to continental oceanic convergence.
- Continental to continental convergence: This type of collision will not produce a trench and volcanoes, but it produces mountain ranges and earthquake. Earthquake will occur in all type of converging plates.
- Here are the list of geological feature when two oceanic plate converged
Earthquake
Trench
Volcanoes or volcanic island
Tsunami
- Earthquake: Grinding of the two oceanic plate as they collide produces earthquake. The type of earthquake produce is tectonic earthquake since its origin is the movement of the plate. When earthquake is produce because of Volcanic activity, we called them as Volcanic earthquake.
- Trench: During the subduction of oceanic plate B beneath oceanic plate A, it produces and depression on the ocean floor which is deeper than the other. We also called them as submarine valleys.
- Volcanoes: As the leading edge of plate B, it will dive into the mantle and melts. When the leading edge of the plates melts, it turns into a magma which rise up on the surface creating volcanoes.
- Tsunami: If the edge of Plate A suddenly flicks upward, a large amount of water may be displaced on the surface of the ocean known as tsunami.
- Convergent boundary is also known as destructive boundary. As the subducted plate reaches the mantle, it will be destroyed. This type of boundary also explains most of the rock cycle. The plate will move in a certain direction because of the convection current of the mantle. Convection current in the mantle are produce because of heat in the inner core caused by radioactive decay of uranium which releases tremendous amount of heat.
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