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How does magma form at a subduction zone?
it is a chemical interaction started by the water the subducted plate brings down with it which causes melting and forms magma which creates volcanoes
Why do volcanoes occur at constructive plate margins and subduction zones?
Because the subducting plate is water saturated oceanic crust, and as it moves down into the mantle it vaporizes the water and forces steam upwards. At the same time, the descending plate causes friction and circulation, leading to pressure-release melting. All of these processes melt the upper mantle to form magma chambers and thus, volcanoes.
Where does the water involved in melting at subduction zones come from?
Water contained within minerals in the subducting plate is released during metamorphism.
Why is water a necessary component of the melting process in subduction zones?
Water plays a crucial role in the melting process at subduction zones by lowering the melting temperature of the Earth's mantle rocks. As the subducting oceanic plate sinks into the mantle, water is released from the subducted crust and sediments, which then infiltrates the mantle wedge above the subducting slab. This water reduces the melting point of the mantle rocks, leading to the formation of magma that rises to the surface and contributes to volcanic activity at subduction zones.
What two ingredients in magma affects the type of explosion and shape of a volcano?
water and mantle rock +++ More specifically, the silica proportion, plus water and gases from entrained wet, organic-rich sediment if the volcano is from subduction rather than a constructive plate margin. Increasing silica increases the magma's viscosity; the water and gas make it effervesce in the eruption.
How does magma form at a subduction zone?
it is a chemical interaction started by the water the subducted plate brings down with it which causes melting and forms magma which creates volcanoes
What would happen if water was present in wet magma?
wet magma is nothing but magma which is cooling down.if wet magma touches water, it will cool down the magma.2. Much volcanic material, magma included contains water - hence forming clouds above an active volcano. But seldom is material ejected from the throat steaming when it lands, therefore most of the moisture is rapidly dissipated.Volcanic glasses can occasionally contain water, under large pressure and temperature, and upon the explosive ejection, may form pumice or ignimbrite.Presumably the water in the magma was entrained during the subduction phase of the cycle.
Does Mount Fuji has any type of magma?
Its lava (not magma) is a water saturated granitic lava that is typical of subduction zone volcanoes. It tends to erupt explosively due to the sudden flash evaporation of the water as the lava leaves the volcano.
When subduction happens does the magma leaks out?
Magma does not "leak" out in a subduction situation, it does rise after the melting of the subducted plate and eventually rupture the crust and possibly create a volcano. In the area of contact, where the two plates collide, no magma leaks. Consider that the crust is miles thick and IF any magma were to go through cracks in the crust where the collision occurs, it would move slowly (the fastest of moving crusts move mere inches a year) and before it reaches the surface to leak, it will harden and fill what was once a crack, with hardened rock. So no, magam will not "leak".
Why do volcanoes occur at constructive plate margins and subduction zones?
Because the subducting plate is water saturated oceanic crust, and as it moves down into the mantle it vaporizes the water and forces steam upwards. At the same time, the descending plate causes friction and circulation, leading to pressure-release melting. All of these processes melt the upper mantle to form magma chambers and thus, volcanoes.
How does subduction create mountains?
Subduction occurs when one tectonic plate slides beneath another. As the descending plate moves deeper into the Earth's mantle, it heats up and releases water and gases. This causes the overlying plate to melt and form magma, which rises to the surface and creates volcanic activity. The accumulation of this magma and the compression of the overlying plate lead to the formation of mountains.
Where does the water involved in melting at subduction zones come from?
Water contained within minerals in the subducting plate is released during metamorphism.
Why is water a necessary component of the melting process in subduction zones?
Water plays a crucial role in the melting process at subduction zones by lowering the melting temperature of the Earth's mantle rocks. As the subducting oceanic plate sinks into the mantle, water is released from the subducted crust and sediments, which then infiltrates the mantle wedge above the subducting slab. This water reduces the melting point of the mantle rocks, leading to the formation of magma that rises to the surface and contributes to volcanic activity at subduction zones.
How do subduction zones lead to the formation of volcanic activity?
Subduction zones lead to the formation of volcanic activity because the water combined with crust and mantle material lowers the rock's melting point temperature, causing the rock to melt and produce magma, which then creates volcanic activity.
What causes a geyser to erupt?
A geyser erupts when water beneath the ground is heated by magma, creating pressure that forces the water to shoot out of the ground in a powerful burst.
What two ingredients in magma affects the type of explosion and shape of a volcano?
water and mantle rock +++ More specifically, the silica proportion, plus water and gases from entrained wet, organic-rich sediment if the volcano is from subduction rather than a constructive plate margin. Increasing silica increases the magma's viscosity; the water and gas make it effervesce in the eruption.
What properties of magma help to determine the type of eruptions?
The properties of magma that help to determine the type of eruption are the magma's viscosity and its silica content. Those volcanoes that exhibit massive eruptions have a high viscosity and high silica content.
