What is an example of oceanic oceanic convergence?
Examples of ocean-ocean convergent zones are subduction of the Pacific Plate south of Alaska (creating the Aleutian Islands) and under the Philippine Plate, where it creates the Marianas Trench, the deepest part of the ocean.
What is an example on earth of an oceanic oceanic convergent plate boundary?
An example of an oceanic/oceanic convergent boundary is that between the Pacific and Mariana plates, which includes the Mariana Islands arc and a subduction zone encompassing the Mariana Trench, the deepest part of the World Ocean. The World Ocean is the name for the collective group of oceans on the planet.
What happens at Oceanic Oceanic convergent?
If the two plates that meet at a convergent plate boundary both are of oceanic crust, the older, denser plate will subduct beneath the less dense plate. The older plate subducts into a trench, resulting in earthquakes. Melting of mantle material creates volcanoes at the subduction zone.
Which one is an example of the features formed by oceanic continental convergence?
What does oceanic continental convergence form?
Ocean-Continent Convergence. When oceanic crust converges with continental crust, the denser oceanic plate plunges beneath the continental plate. Subduction of an oceanic plate beneath a continental plate causes earthquakes and forms a line of volcanoes known as a continental arc.Esfand 5, 1390 AP
What are three types of convergent boundaries answers?
Three types of convergent boundaries are recognized: continent‐continent, ocean‐continent, and ocean‐ocean.
- Continent‐continent convergence results when two continents collide.
- Ocean‐continent convergence occurs when oceanic crust is subducted under continental crust.
What landforms are created by convergent boundaries?
Deep ocean trenches, volcanoes, island arcs, submarine mountain ranges, and fault lines are examples of features that can form along plate tectonic boundaries. Volcanoes are one kind of feature that forms along convergent plate boundaries, where two tectonic plates collide and one moves beneath the other.
How dangerous is a convergent boundary?
Often, seawater and minerals get caught up in the subduction zone, which can cause a build up of pressure and leads to the explosive, dangerous earthquakes and volcanic eruptions you get at a convergent plate boundary. A convergent boundary can cause the formation of massive mountains.
What does a divergent boundary create?
A divergent boundary occurs when two tectonic plates move away from each other. Along these boundaries, earthquakes are common and magma (molten rock) rises from the Earth’s mantle to the surface, solidifying to create new oceanic crust.
What happens when two continental plates collide?
What happens when two continental plates collide? 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.
Why is there no subduction when two continental plates collide?
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. After collision the oceanic lithosphere breaks off and sinks into the mantle.
Does melting happen when two continents collide?
The continental crust can partially melt to generate silicic magmas. This chapter discusses the nature of the melts and solid residues likely to be formed in response to continental collision. In the absence of H2O-rich fluids, melting of metamorphic rocks is triggered by the breakdown of hydrous minerals.
Why do tectonic plates move?
The heat from radioactive processes within the planet’s interior causes the plates to move, sometimes toward and sometimes away from each other. This movement is called plate motion, or tectonic shift.
Can you predict tectonically active areas?
Answer: Yes, by keeping track on the earthquakes epicenter, volcanic eruptions and distribution of major mountain belts you can predict tectonically active areas. One such area is the circum-Pacific Ring of Fire, where the Pacific plates meets many surrounding plates.
Why do continents not Subduct?
It is due to the process of subduction; oceanic crust tends to get colder and denser with age as it spreads off the mid-ocean ridges. It gets so dense, that it sinks in the upper mantle (subduction). As the continental crust is lighter than the oceanic crust, the continental crust cannot subduct.
Where is the oldest seafloor located?
Where is the oldest oceanic crust found?
What is the border between two plates called?
What are the 3 types of boundary?
There are three main types of plate boundaries:
- Convergent boundaries: where two plates are colliding. Subduction zones occur when one or both of the tectonic plates are composed of oceanic crust.
- Divergent boundaries – where two plates are moving apart.
- Transform boundaries – where plates slide passed each other.
What are the 4 types of plate tectonics?
Divergent boundaries — where new crust is generated as the plates pull away from each other. Convergent boundaries — where crust is destroyed as one plate dives under another. Transform boundaries — where crust is neither produced nor destroyed as the plates slide horizontally past each other.
Which type of crust is usually the oldest?