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At an oceanic subduction zone, the athenosphere is subducted under continental lithosphere, or under other oceanic lithosphere. Friction between these plates causes heat that creates magmas. At a divergent boundary upwelling mantle (athenosphere) decompresses due to reduced pressures, allowing magma to form. This magma is extruded onto the seafloor as pillow basalts, and beneath the seafloors as massive gabbros and sheeted (gabbro) dikes.

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How does a volcano erupt at a convergent boundary?

As an oceanic plate sinks into the mantle at a convergent boundary it causes rocks to melt. Some of the newly formed magma will migrate upward to volcanoes, that have formed along the convergent boundaries, and erupt.


Is the boundary of the devils tower convergent?

The boundary of Devil's Tower is not a convergent boundary. It formed through volcanic activity, where magma solidified underground and was then exposed through erosion. This process created the distinct shape of Devil's Tower.


Is Krakatoa a divergent convergent or transform boundary?

Krakatoa is located at a convergent boundary, where the Indo-Australian Plate is being subducted beneath the Eurasian Plate. This subduction zone can lead to intense volcanic activity due to the melting and rising of magma from the subducted plate.


How are volcano island formed?

It is formed by a convergent boundary of an oceanic plate and continental plate when they hit each other and goes down into the asthenosphere thus making the magma to rise above the earth's surface making a volcano.Then it solidifies and therefore it makes a volcano island.


What type of convergent plate boundary triggers the formation of active volcanoes as magma rises beneath the surface?

The type of convergent plate boundary that triggers the formation of active volcanoes is the oceanic-continental convergent boundary. In this setting, an oceanic plate subducts beneath a continental plate, leading to the melting of mantle material and the generation of magma. This rising magma can lead to volcanic activity, often resulting in the formation of volcanic arcs along the continent. An example of this is the Cascade Range in the Pacific Northwest of the United States.

Related Questions

What causes magma to form at a convergent boundary?

the mid ocean ridges cause the magma to form at a convergent plate boundary.


What causes Magma to form a convergent plate boundary?

the mid ocean ridges cause the magma to form at a convergent plate boundary.


What causes magma to form at convergent boundaries?

the mid ocean ridges cause the magma to form at a convergent plate boundary.


What causes to form at a convergent plate boundary?

the mid ocean ridges cause the magma to form at a convergent plate boundary.


How does a volcano erupt at a convergent boundary?

As an oceanic plate sinks into the mantle at a convergent boundary it causes rocks to melt. Some of the newly formed magma will migrate upward to volcanoes, that have formed along the convergent boundaries, and erupt.


What causes magma to form at a convergant plate?

the mid ocean ridges cause the magma to form at a convergent plate boundary.


Is the boundary of the devils tower convergent?

The boundary of Devil's Tower is not a convergent boundary. It formed through volcanic activity, where magma solidified underground and was then exposed through erosion. This process created the distinct shape of Devil's Tower.


Is Krakatoa a divergent convergent or transform boundary?

Krakatoa is located at a convergent boundary, where the Indo-Australian Plate is being subducted beneath the Eurasian Plate. This subduction zone can lead to intense volcanic activity due to the melting and rising of magma from the subducted plate.


How are volcano island formed?

It is formed by a convergent boundary of an oceanic plate and continental plate when they hit each other and goes down into the asthenosphere thus making the magma to rise above the earth's surface making a volcano.Then it solidifies and therefore it makes a volcano island.


How do the plates and mantle interact at a convergent plate boundary?

At a convergent plate boundary, where two tectonic plates collide, one plate is forced beneath the other in a process called subduction. The descending plate sinks into the mantle, causing it to melt and create magma. This magma can then rise to the surface, leading to volcanic activity. The interaction between the plates and the mantle at a convergent boundary is dynamic and can result in the formation of mountain ranges, earthquakes, and volcanic arcs.


What type of convergent plate boundary triggers the formation of active volcanoes as magma rises beneath the surface?

The type of convergent plate boundary that triggers the formation of active volcanoes is the oceanic-continental convergent boundary. In this setting, an oceanic plate subducts beneath a continental plate, leading to the melting of mantle material and the generation of magma. This rising magma can lead to volcanic activity, often resulting in the formation of volcanic arcs along the continent. An example of this is the Cascade Range in the Pacific Northwest of the United States.


What magma source in the mantle is below the lithosphere?

The magma source in the mantle beneath the lithosphere is primarily the asthenosphere. This region is characterized by partially molten rock that allows for the movement of tectonic plates. The asthenosphere's high temperatures and pressures facilitate the melting of mantle materials, generating magma that can rise to the surface, leading to volcanic activity.