At an ocean-ocean convergent boundary, one of the plates (oceanic crust and lithospheric mantle) is pushed, or subducted, under the other (Figure 4.6. 1). Often it is the older and colder plate that is denser and subducts beneath the younger and warmer plate. What is the movement of P waves? p waves and s waves.
What happens to oceanic to oceanic convergence?
Oceanic – oceanic convergence In collisions between two oceanic plates, the cooler, denser oceanic lithosphere sinks beneath the warmer, less dense oceanic lithosphere. As the slab sinks deeper into the mantle, it releases water from dehydration of hydrous minerals in the oceanic crust.
What is the movement of oceanic continental?
As with oceanic-continental convergence, when two oceanic plates converge, one is usually subducted under the other, and in the process a trench is formed. The Marianas Trench (paralleling the Mariana Islands), for example, marks where the fast-moving Pacific Plate converges against the slower moving Philippine Plate.
What happens when oceanic and 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.
How are oceanic oceanic and Oceanic Continental convergent boundaries different?
The oceanic plate is pushed under the continental plate and melted. … Continental plates are much thicker that Oceanic plates. At the convergent boundaries the continental plates are pushed upward and gain thickness. The rocks and geological layers are much older on continental plates than in the oceanic plates.
What causes the motion of oceanic oceanic?
The most obvious examples are the waves and ripples on the water’s surface that are generated by wind or the ocean currents that are due to tides. … There currents are set in motion by variations in water density caused by differences in temperature and salinity, a process called convection.
Which is produced by the convergence of continental and oceanic plates?
When an oceanic plate converges with a continental plate, the oceanic crust will always subduct under the continental crust; this is because oceanic crust is naturally denser. Convergent boundaries are commonly associated with larger earthquakes and higher volcanic activity.
Which direction are the oceanic and continental plates moving?
Which direction are the oceanic and continental plates moving? Oceanic is moving to the right while the continental is moving to the right. Oceanic plate will go under continental plate because it is thinner and denser.
What landforms are created by oceanic oceanic?
| Continental Landforms | Oceanic Landforms |
|---|---|
| Plains | Abyssal Plain |
| Volcano | Seamounts (Guyot) |
What is the geologic features of oceanic oceanic?
There are many geologic features on the ocean floor. Trenches, ridges, rises, and islands are the result of continental or oceanic plate movement. Volcanic eruptions and earthquakes are also the result of tectonic plate movement.
Which of the following pair of plates shows oceanic to oceanic convergence?
Examples of ocean-ocean convergent zones are subduction of the Pacific Plate south of Alaska (Aleutian Islands) and west of the Philippines, subduction of the India Plate south of Indonesia, and subduction of the Atlantic Plate beneath the Caribbean Plate (Figure 10.21).
Which of the following is formed in the convergence of two oceanic?
When two oceanic plates converge, both a trench and a string of volcanoes are formed. These volcanoes can build to produce island chains, such as the Mariana Islands, which are located alongside the Marianas Trench.
What causes the motion of oceanic oceanic and continental continental?
Recall that both continental landmasses and the ocean floor are part of the earth’s crust, and that the crust is broken into individual pieces called tectonic plates (Fig. 7.14). The movement of these tectonic plates is likely caused by convection currents in the molten rock in Earth’s mantle below the crust.
What causes the motion of oceanic oceanic divergent plate boundaries?
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 are the 4 types of tectonic plate movement?
- Divergent: extensional; the plates move apart. Spreading ridges, basin-range.
- Convergent: compressional; plates move toward each other. Includes: Subduction zones and mountain building.
- Transform: shearing; plates slide past each other. Strike-slip motion.
Where would oceanic oceanic Convergence most likely occur?
Where would oceanic-oceanic convergence most likely occur? Sometimes earthquakes occur at a boundary between the Indian and Eurasian Plates. The collisions of these two continental plates formed the Himalayan mountain range.
What is oceanic boundary?
At an ocean-ocean convergent boundary, one of the plates (oceanic crust and lithospheric mantle) is pushed, or subducted, under the other (Figure 4.6. … Earthquakes occur relatively deep below the seafloor, where the subducting crust moves against the overriding crust. Figure 4.6.
Which plates are oceanic and continental?
An example of an oceanic plate is the Pacific Plate, which extends from the East Pacific Rise to the deep-sea trenches bordering the western part of the Pacific basin. A continental plate is exemplified by the North American Plate, which includes North America as well as the oceanic crust…
Why do tectonic plates move in different directions?
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 landform is produced during a convergence between two oceanic plates?
The subduction process that occurs when an oceanic plate converges with another oceanic plate can lead to volcanoes being formed paralleling the trench.
What 3 things are created by Convergent boundaries of oceanic and oceanic crust?
Oceanic/Oceanic Convergent Boundaries Such a convergent boundary includes a seafloor trench marking the earthquake-rattled subduction zone as well as an island arc: a line of volcanoes created by rock-melt in the mantle associated with subduction.
Where are most of the oceanic trenches located and what two major geologic features are found near these trenches?
Ocean trenches are found in every ocean basin on the planet, although the deepest ocean trenches ring the Pacific as part of the so-called “Ring of Fire” that also includes active volcanoes and earthquake zones.
Which of the following is formed in the convergence of two oceanic or oceanic and continental?
When two oceanic plates collide against each other, the older and therefore heavier of the two subducts beneath the other, initiating volcanic activity in a manner similar to that which occurs at an oceanic-continental convergent plate boundary and forming a volcanic island arc.
What is the movement of convergent plate boundaries?
Convergent (Colliding): This occurs when plates move towards each other and collide. When a continental plate meets an oceanic plate, the thinner, denser, and more flexible oceanic plate sinks beneath the thicker, more rigid continental plate. This is called subduction.
Which type of boundaries movement causing the formation of oceanic ridges?
Mid-ocean ridges occur along divergent plate boundaries, where new ocean floor is created as the Earth’s tectonic plates spread apart. As the plates separate, molten rock rises to the seafloor, producing enormous volcanic eruptions of basalt.
What geologic process is associated with oceanic oceanic divergence?
Divergent Plate Boundary – Oceanic When a divergent boundary occurs beneath oceanic lithosphere, the rising convection current below lifts the lithosphere, producing a mid-ocean ridge. Extensional forces stretch the lithosphere and produce a deep fissure.
What is the motion of divergent boundary?
At divergent boundaries, plates move away from each other. At convergent boundaries, plates move towards each other. At transform boundaries, plates move alongside each other.
