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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".
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∙ 15y ago
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Where is andesitic magma found?
Andesite can be found around volcanoes with magma of intermediate composition, usually near subduction zones.
What happens when oceanic and oceanic crust meets?
Subduction. denser oceanic plate moves under the continental plate. The oceanic plate is submerged into the mantle causing magma to rise to the surface.
Why do volcanoes form above subduction zones?
magma forms in mantle above slab
What happens after subduction?
trenches and hotspots are created
What is the difference between subduction and convection?
not related subduction is when some one sexually seduces you Doh!! Ok wow um your thinking about seduction. This person is asking subduction lol. ok so anyways, convection is when the upper mantle pushes magma through an opening in the crust, which becomes new land on ocean ridges. Subduction is when two plates clash and one slides under the other and turns to magma in the upper mantle.
What happens along a plate boundary that leads to high occurrences of volcanoes?
Subduction happens along plate boundaries which pushes up magma which then creates volcanoes.
What happens after magma erupts along mid ocean?
The magma spills over the ridge and pushes the old sea floor away toward a subduction zone where the old sea floor melts.
What replaces magma in the Earth?
The subduction and melting of oceanic crust replaces magma in the earth.
Where is andesitic magma found?
Andesite can be found around volcanoes with magma of intermediate composition, usually near subduction zones.
Explain the relationship between trenches and seafloor spreading?
1. New sea-floor is created by the upwelling of magma at mid-ocean spreading centers; old ocean floor is destroyed by subduction at deep sea trenches. 2. The area is a subduction zone. Magma from underground comes up and destroys that crust. That crust is then recycled and the magma cools and hardens. That creates new land, that creates the trenches. Seafloor spreading is in the ocean and happens with convection currents. That is the relationship between. 3. As new seafloor is formed at mid-ocean ridges, the old seafloor is pushed down into trenches at subduction zones.
What happens when oceanic and oceanic crust meets?
Subduction. denser oceanic plate moves under the continental plate. The oceanic plate is submerged into the mantle causing magma to rise to the surface.
What happens when oceanic and continental crust meets?
Subduction. denser oceanic plate moves under the continental plate. The oceanic plate is submerged into the mantle causing magma to rise to the surface.
What happens to magma after it erupts onto the ocean floor?
The magma spills over the ridge and pushes the old sea floor away toward a subduction zone where the old sea floor melts.
Why do volcanoes form above subduction zones?
magma forms in mantle above slab
What happens in an ocean trench?
Subduction
What was obsidian before it was obsidian?
It was liquid rock (magma) which solidified after an extrusion or eruption. Crustal rocks can re-dissolve into magma during subduction of oceanic crust.
What happens after subduction?
trenches and hotspots are created
