The Peru-Chile Trench off the west coast of South America is formed by the oceanic crust of the Nazca plate subducting beneath the continental crust of the South American plate.
Error message | View complete answer on https://www.nationalgeographic.org
How was this trench is formed?
Trenches are formed by subduction, a geophysical process in which two or more of Earth’s tectonic plates converge and the older, denser plate is pushed beneath the lighter plate and deep into the mantle, causing the seafloor and outermost crust (the lithosphere) to bend and form a steep, V-shaped depression.
Error message | View complete answer on https://www.whoi.edu
What type of convergent plate boundary is the Peru-Chile Trench?
The eastern margin of the Nazca Plate is a convergent boundary subduction zone under the South American Plate and the Andes Mountains, forming the Peru–Chile Trench.
Error message | View complete answer on https://lacgeo.com
What type of fault is the Peru-Chile Trench?
The trench is a result of a convergent plate boundary, where the eastern edge of the oceanic Nazca Plate is being subducted beneath the continental South American Plate.
Error message | View complete answer on https://en.wikipedia.org
How were the Andes Mountains and the Peru-Chile Trench formed?
The mountains have been formed as a result of the convergence of the Nazca plate and the South American plate. The heavier oceanic crust of the Nazca plate is pushed towards the South American plate, and because it is denser is subducted underneath.
Error message | View complete answer on https://www.coolgeography.co.uk
What type of plate boundary is the Peru Chili trench?
Some of the most familiar ocean trenches are the result of this type of convergent plate boundary. The Peru-Chile Trench off the west coast of South America is formed by the oceanic crust of the Nazca plate subducting beneath the continental crust of the South American plate.
Error message | View complete answer on https://www.nationalgeographic.org
Is the Chilean trench a divergent boundary?
The Chile Ridge, also known as the Chile Rise, is a submarine oceanic ridge formed by the divergent plate boundary between the Nazca Plate and the Antarctic Plate.
Error message | View complete answer on https://en.wikipedia.org
What type of boundary is Chile?
This type of plate boundary is called a subduction zone, and this one is intersected at 46°S by the Chile Rise, a spreading center where the Nazca and Antarctic plates separate and new oceanic crust forms (figure 1).
Error message | View complete answer on https://oceanexplorer.noaa.gov
How are trenches formed by tectonic plates?
Trenches are formed by subduction, a geophysical process in which two or more of Earth’s tectonic plates converge and the older, denser plate is pushed beneath the lighter plate and deep into the mantle, causing the seafloor and outermost crust (the lithosphere) to bend and form a steep, V-shaped depression.
Error message | View complete answer on https://www.whoi.edu
How Andes Mountains were formed?
The Andes were formed by tectonic activity whereby earth is uplifted as one plate (oceanic crust) subducts under another plate (continental crust). To get such a high mountain chain in a subduction zone setting is unusual which adds to the importance of trying to figure out when and how it happened.
Error message | View complete answer on http://www.bristol.ac.uk
How is the Peru-Chile Trench related to the Andes Mountains?
The eastern margin of the Nazca Plate is a convergent boundary subduction zone under the South American Plate and the Andes Mountains, forming the Peru–Chile Trench. Two seamount ridges within the Nazca Plate enter the subduction zone along this trench: the Nazca Ridge and the Juan Fernández Ridge.
Error message | View complete answer on https://lacgeo.com
What type of convergent plate boundary occurs between Peru and Chile forming Peru-Chile Trench?
Oceanic-continental convergence Off the coast of South America along the Peru-Chile trench, the oceanic Nazca Plate is pushing into and being subducted under the continental part of the South American Plate.
Error message | View complete answer on https://pubs.usgs.gov
What plates formed the Andes Mountains?
It’s been understood that the Andes mountain range has been growing as the Nazca oceanic plate slips underneath the South American continental plate, causing the Earth’s crust to shorten (by folding and faulting) and thicken.
Error message | View complete answer on https://www.rochester.edu
How is trench formed in the ocean?
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.
Error message | View complete answer on https://www.nationalgeographic.org
Where is a trench formed?
Trenches are found on the floor of the sea; however, their common name is deep ocean trenches because they are more often found in the deepest areas of the ocean. Trenches are formed in subduction zones where tectonic plates collide. There are many known trenches that scientists continue to study.
Error message | View complete answer on https://study.com
What type of plate boundary is the Peru-Chile Trench?
Some of the most familiar ocean trenches are the result of this type of convergent plate boundary. The Peru-Chile Trench off the west coast of South America is formed by the oceanic crust of the Nazca plate subducting beneath the continental crust of the South American plate.
Error message | View complete answer on https://www.nationalgeographic.org
Is the Chilean trench a divergent boundary?
The Chile Ridge, also known as the Chile Rise, is a submarine oceanic ridge formed by the divergent plate boundary between the Nazca Plate and the Antarctic Plate.
Error message | View complete answer on https://en.wikipedia.org
What type of boundary is Chile?
This type of plate boundary is called a subduction zone, and this one is intersected at 46°S by the Chile Rise, a spreading center where the Nazca and Antarctic plates separate and new oceanic crust forms (figure 1).
Error message | View complete answer on https://oceanexplorer.noaa.gov
What direction is the South American Plate moving at the Peru-Chile Trench?
The South American plate is moving away from the Nazca plate and moving in a direction to the north of the Chile ridge spreading center, while the Nazca plate is subducting under the South American plate at a rate of about 80–90 mm/a north of the triple junction.
Error message | View complete answer on https://en.wikipedia.org
