Quick Answer: What Geologic Features Form When Two Oceanic Plates Collide?

What is an example of oceanic oceanic convergence?

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..

Was Himalayas underwater?

The Himalayas were once under water, in an ocean called the Tethys Ocean. After the subduction occurred when the Indian plate collided with the…

What happens when two continental plates collide at a convergent boundary?

If the two plates that meet at a convergent plate boundary both consist of continental crust, they will smash together and push upwards to create mountains. Large slabs of lithosphere smashing together create large earthquakes. … The amazing Himalaya Mountains are the result of this type of convergent plate boundary.

What is formed when two oceanic plates collide?

When two oceanic plates converge, the denser plate will end up sinking below the less dense plate, leading to the formation of an oceanic subduction zone. … Old, dense crust tends to be subducted back into the earth. An example of a subduction zone formed from a convergent boundary is the Chile-Peru trench.

What are the 3 theories of plate tectonics?

Plates interact at three types of plate boundaries: divergent, convergent and transform. Most of the Earth’s geologic activity takes place at plate boundaries. At a divergent boundary, volcanic activity produces a mid ocean ridge and small earthquakes.

Why do plates move towards each other?

The plates can be thought of like pieces of a cracked shell that rest on the hot, molten rock of Earth’s mantle and fit snugly against one another. The heat from radioactive processes within the planet’s interior causes the plates to move, sometimes toward and sometimes away from each other.

What are the 4 ways plates move?

There are three main types of boundaries: transform, convergent, and divergent. At transform boundaries, plates move past each other. This is one of the most common causes of earthquakes. At convergent boundaries, plates move toward each other.

What are the characteristics of oceanic plates?

oceanic plates are formed at divergent boundaries mainly at mid ocean ridges. The material that is poured out are basaltic lave in nature. Basalt is denser and heavier than the granite that makes up continental plates. Oceanic plates are much thinner than the continental 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.

What geologic features resulted from the collision of the two continental plates?

The collision buckles the edge of one or both plates, creating a mountain range or subducting one of the plates under the other, creating a deep seafloor trench. At convergent boundaries, continental crust is created and oceanic crust is destroyed as it subducts, melts, and becomes magma.

What happens when two oceanic plates move towards each other?

When oceanic or continental plates slide past each other in opposite directions, or move in the same direction but at different speeds, a transform fault boundary is formed. No new crust is created or subducted, and no volcanoes form, but earthquakes occur along the fault.

What are the three types of boundaries?

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 2 types of plates?

The two types of tectonic plates are continental and oceanic tectonic plates.

What are the 4 types of boundaries?

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.

What happens when two plates collide?

If two tectonic plates collide, they form a convergent plate boundary. Usually, one of the converging plates will move beneath the other, a process known as subduction. … The new magma (molten rock) rises and may erupt violently to form volcanoes, often building arcs of islands along the convergent boundary.

What are the small plates called?

Saucer: a small plate with an indentation for a cup. Appetizer, dessert, salad plate, and side plates: vary in size from 4 to 9 inches (10 to 23 cm) Bread and butter plate: small (about 6–7 inches (15–18 cm)) for individual servings.

How do oceanic plates move?

As the lithosphere formed at divergent plate margins is hot, and less dense that the surrounding area it rises to form oceanic ridges. The newly-formed plates slide sideways off these high areas, pushing the plate in front of them resulting in a ridge-push mechanism.

Where is a oceanic oceanic convergent boundary?

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 happens when 2 plates carrying oceanic crust collide?

When two plates collide, the density of the plates determines which one comes out on top. Oceanic crust becomes cooler and denser as it spreads away from the mid-ocean ridge. Where two plates carrying oceanic crust meet at a trench, the plate that is more dense sinks under the other plate.

What 2 features form when you have oceanic oceanic convergence?

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.

What forms when two of Earth’s plates pull apart?

When two continental plates diverge, a valleylike rift develops. This rift is a dropped zone where the plates are pulling apart. As the crust widens and thins, valleys form in and around the area, as do volcanoes, which may become increasingly active.