Table of Contents
Is trenches a transform boundary?
Deep trenches are features often formed where tectonic plates are being subducted and earthquakes are common. This is known as a transform plate boundary. As the plates rub against each other, huge stresses can cause portions of the rock to break, resulting in earthquakes.
Is a trench divergent?
No, ocean trenches do not occur at divergent plate boundaries. They are formed at convergent boundaries.
Are trenches convergent or divergent?
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.
Which type of plate boundary is best associated with the deepest parts of oceans?
oceanic convergent boundary
The Mariana trench contains the deepest part of the world’s oceans, and runs along an oceanic-oceanic convergent boundary. It is the result of the oceanic Pacific plate subducting beneath the oceanic Mariana plate.
What type of plate boundary make deep oceanic trenches?
convergent plate boundaries
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.
What plate boundary forms rift valleys?
A rift valley is formed on a divergent plate boundary, a crustal extension or spreading apart of the surface, which is subsequently further deepened by the forces of erosion.
Which plate boundary has subduction?
Subduction zones exist at convergent plate boundaries where one plate of oceanic lithosphere converges with another plate. The descending slab, the subducting plate, is over-ridden by the leading edge of the other plate. The slab sinks at an angle of approximately twenty-five to forty-five degrees to Earth’s surface.
What causes an ocean trench?
Ocean trenches are typically caused when an oceanic crustal plate slides under a lighter continental plate or another oceanic plate. It is believed to work by density.
What are the names of the oceanic trenches?
Ocean trenches exist in all the world’s oceans. They include the Philippine Trench, Tonga Trench, the South Sandwich Trench, the Eurasian Basin and Malloy Deep, the Diamantina Trench, the Puerto Rican Trench, and the Mariana.