Destructive plate boundary This occurs when oceanic and continental plates move together. The oceanic plate is forced under the lighter continental plate. Friction causes melting of the oceanic plate and may trigger earthquakes. Magma rises up through cracks and erupts onto the surface.
Q. Which type of plate boundary is most associated with volcanism extreme earthquakes and deep trenches?
Ocean-to-continent convergence occurs when oceanic crust converges with continental crust, forcing the denser oceanic plate to plunge beneath the continental plate. This process called subduction, occurs along oceanic trenches called subduction zones where lots of intense earthquakes and volcanic eruptions can occur.
Table of Contents
- Q. Which type of plate boundary is most associated with volcanism extreme earthquakes and deep trenches?
- Q. What type of plate boundary is associated with a volcanic arc and a deep ocean trench?
- Q. Which type of plate boundary is associated with very strong and deep earthquakes?
- Q. At what type of plate boundary do mountains and volcanoes often form?
- Q. Why do volcanoes occur at a destructive plate boundary?
- Q. How do earthquakes happen at constructive plate boundaries?
- Q. What is an example of a constructive plate boundary?
- Q. How fast do constructive plate boundaries move?
Q. What type of plate boundary is associated with a volcanic arc and a deep ocean trench?
In particular, ocean trenches are a feature of convergent plate boundaries, where two or more tectonic plates meet. At many convergent plate boundaries, dense lithosphere melts or slides beneath less-dense lithosphere in a process called subduction, creating a trench.
Q. Which type of plate boundary is associated with very strong and deep earthquakes?
convergent plate boundaries
Q. At what type of plate boundary do mountains and volcanoes often form?
Typically, a convergent plate boundary—such as the one between the Indian Plate and the Eurasian Plate—forms towering mountain ranges, like the Himalaya, as Earth’s crust is crumpled and pushed upward. When subduction occurs, a chain of volcanoes often develops near the convergent plate boundary.
Q. Why do volcanoes occur at a destructive plate boundary?
At a destructive plate boundary (also called convergent boundaries) two plates move towards another. One plate is then pushed underneath the other. The plate then melts, due to friction, to become molten rock (magma). The magma then forces its way up to the side of the plate boundary to form a volcano.
Q. How do earthquakes happen at constructive plate boundaries?
At a constructive plate margin the plates move apart from one another. When this happens the magma from the mantle rises up to make (or construct) new land in the form of a shield volcano. The movement of the plates over the mantle can cause earthquakes.
Q. What is an example of a constructive plate boundary?
Constructive (tensional) plate margins occur where plates move apart. Examples below include the South American Plate and African Plate and the Eurasian Plate and the North American Plate. Iceland was formed as the result of sea floor spreading in the North Atlantic.
Q. How fast do constructive plate boundaries move?
Plates move away from constructive boundaries at speeds that can be as low as <10 mm y−1 to so-called ultra-fast spreading ridges where half spreading rates can exceed 100 mm y−1.
