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At convergent boundaries involving an oceanic plate, or between oceanic plates, the heavier (more dense) oceanic plate subducts, or moves downward, underneath the less dense plate toward the mantle. As temperature increases with depth, and with the introduction of water contained within the subducting crust, partial melting occurs. The melted rock, or magma, is more buoyant than the surrounding rock, and will seek to rise toward the surface through cracks and fissures as well as by the assimilation of the surrounding rock. If it reaches the surface before solidifying, it will erupt, forming a volcano.
What else can I help you with?
What type of plate boundary causes volcanic eruptions?
There are two plate boundaries that cause volcanoes. They are the divergent and convergent plate boundaries.
What boudaries produces volcanoes?
Convergent boundaries produce volcanoes. Volcanoes form when an oceanic plate and a continental plate converge, causing the oceanic plate to subduct. The subduction causes a magma chamber to form which feeds the volcano when it erupts.
Do most earthquakes and volcanoes occur within plates or along the boundaries of plates?
Most earthquakes and volcanoes occur along the boundaries of tectonic plates, where the movement of the plates causes stress and forces to build up. These boundaries are classified as convergent, divergent, or transform, each with distinct seismic and volcanic activity associated with their movements.
Why are most volcanoes located near a fault?
Most volcanoes form at either convergent or divergent plate boundaries. Volcanoes at convergent plate boundaries form when one plate slides under another, taking seawater with it. This causes the rock in the mantle to melt as the melting point drops. This new magma can rise to form volcanoes.At divergent plate boundaries the crust is thing, which lowers pressure on the mantle, causing some material to melt.
What sphere do volcanoes occur in?
Volcanoes occur in the geosphere, which is the solid part of the Earth made up of rocks, minerals, and landforms. They are typically found at plate boundaries where tectonic activity causes magma to rise to the surface.
What causes volcanoes to form at spreading boundaries?
Please make the question clearer. There are converging and diverging boundaries but not spreading boundaries. Plates move but don't spread. Please make the question clearer
What plate process causes volcanoes to form at their boundaries?
the plate of your mom
What type of plate boundary causes volcanic eruptions?
There are two plate boundaries that cause volcanoes. They are the divergent and convergent plate boundaries.
What is the process that causes and earthquake?
Earthquakes are caused by transform faults and when stress overcomes friction. volcanoes are caused by convergent boundaries, the process of convergent boundaries is when two plates come in contact with each other. ex. for volcano is a oceanic plate sub ducts under a continental plate.
What boudaries produces volcanoes?
Convergent boundaries produce volcanoes. Volcanoes form when an oceanic plate and a continental plate converge, causing the oceanic plate to subduct. The subduction causes a magma chamber to form which feeds the volcano when it erupts.
Do most earthquakes and volcanoes occur within plates or along the boundaries of plates?
Most earthquakes and volcanoes occur along the boundaries of tectonic plates, where the movement of the plates causes stress and forces to build up. These boundaries are classified as convergent, divergent, or transform, each with distinct seismic and volcanic activity associated with their movements.
Why are most volcanoes located near a fault?
Most volcanoes form at either convergent or divergent plate boundaries. Volcanoes at convergent plate boundaries form when one plate slides under another, taking seawater with it. This causes the rock in the mantle to melt as the melting point drops. This new magma can rise to form volcanoes.At divergent plate boundaries the crust is thing, which lowers pressure on the mantle, causing some material to melt.
What sphere do volcanoes occur in?
Volcanoes occur in the geosphere, which is the solid part of the Earth made up of rocks, minerals, and landforms. They are typically found at plate boundaries where tectonic activity causes magma to rise to the surface.
At which plate boundaries do most volcanoes form?
The Convergent boundary forms a subduction zone. When the heavier plate reaches 100km the water is released from the submerged plate, and the mantle starts to melt. The mantle rises and a volcano forms on the lighter side plate. Unless it is a continent-continent convergent plate where mostly mountains are forms.
What causes volcanoes to form at spreading plate boundaries?
As two plates spread apart from each other at the boundary, magma that was trapped below wells up between them. This magma can be released in the form of volcanoes or ooze out from rift valleys.
What plate causes volcanoes?
What type of boundaries cause volcanoes? Divergent and transform fault boundaries cause volcanoes because they separate. Convergent boundaries cause earthquakes because they collide with other plates.
Why is it some areas along where two plate boundaries meet there are volcanos and in some areas there are none?
There are three types of boundaries: 1. Convergent 2. Divergent 3. Transform There are two types of plates: 1. Continental 2. Oceanic Volcanoes only form along convergent and divergent plate boundaries. To be exact, they only form along continental-oceanic convergent boundary, as well as oceanic-oceanic and continental-continental boundaries. At convergent boundaries, volcanoes are formed because of melting crust of the subduction plate (the oceanic plate subducting under the continental plate). They then seep out of the ground as subduction volcanoes. At divergent boundaries, volcanoes are formed because magma rise to the surface to fill the gap where the plates move apart. A third type of volcano that can form is a hotspot volcano. There exists a spot in the ground where magma is continuously rising. However, plates move so as the plates move, the volcanoes move with them. Hence, new volcanoes are formed and this creates a chain of volcanoes, such as Hawaii. Hope this helps! Sharon, 12th grade Geography student
