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The subducting plate (oceanic) dives downward toward the mantle. Because of the geothermal gradient, temperature with depth increases; this, along with the introduction of large amounts of water which is present in the oceanic crust, will result in partial melting of the subducting lithosphere . The melting occurs in the asthenosphere, which is the ductile rock of the upper mantle. Because the magma is less dense than the surrounding rock, it will rise, and may result in the formation of plutonic rock deep underground, or in the eruption of lava onto the surface.
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∙ 12y ago
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∙ 14y agoCould be a trench, a volcano, magma, a mountain, or an earthquake.
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∙ 13y agoWe know that volcanoes form near subduction zones.
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∙ 11y agoCha Cha says "ocean trenches"
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∙ 11y agoA deep-sea trench.
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∙ 12y agodeep sea trench
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∙ 11y agoa long narrow trench
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∙ 11y agoearthquakes
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What is the major type of stress at convergent plate boundaries?
Subduction, is when one plate is pushed down into the magma, by the other plate sliding over the top.
What types of boundaries do subduction zones form?
This forms on the plate tectonic boundaries.... particularly the convergent plate boundries.
Are subducting plate boundaries the same as convergent plate boundaries?
A subduction zone can be a result of a convergent plate boundary, but the terms are not synonymous. If the two convergent plates are continental, neither of them will subduct.
Is subduction common at divergent plate boundaries?
Subduction doesnt occur at divergent boundaries, but rather they are found at convergent boundaries.
Where does most magma originate?
Most melts on earth originate from plate boundaries. These are areas where there is decompression melting or hydrous melting because of subduction zones.
Movement of lithospheric plates allows for the formation of volcanoes?
Movement of lithospheric plates at convergent boundaries can result in the subduction of one plate beneath another. This subduction creates conditions for magma to form as the subducting plate melts. The rising magma then reaches the surface, leading to the formation of volcanoes.
What is the major type of stress at convergent plate boundaries?
Subduction, is when one plate is pushed down into the magma, by the other plate sliding over the top.
Do volcanoes occur where two tectonic plates moves apart and magma rises up to create new crust?
No. Generally volcanoes occur at plate boundaries called subduction boundaries. At a subduction boundary one tectonic plate rides over another and the lower plate is forced down and magma is forced up
Collision boundaries and subduction boundaries are types of what boundaries?
The older denser plate sinks under a deep ocean trench into the mantle. Some rock above the subducting plate melts and forms magma. Since the magma is less dense than the surrounding rock, it rises toward the surface. Eventually, the magma breaks through the ocean floor, making a volcanoe.
Where on earth would you find a subduction zone?
You could find subduction zones in the depths of the oceans, at some plate boundaries. At this location, you would observe one tectonic plate (a plate of lower density then the other) being slipped under another plate into magma. These are also known as destructive boundaries, because crust is being destroyed, (as opposed to diverent boundaries where leaking magma creates new crust.)
What types of boundaries do subduction zones form?
This forms on the plate tectonic boundaries.... particularly the convergent plate boundries.
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.
Are subducting plate boundaries the same as convergent plate boundaries?
A subduction zone can be a result of a convergent plate boundary, but the terms are not synonymous. If the two convergent plates are continental, neither of them will subduct.
Is subduction common at divergent plate boundaries?
Subduction doesnt occur at divergent boundaries, but rather they are found at convergent boundaries.
Subduction zones are found near what kind of boundaries?
Convergent plate boundaries, usually oceanic plate to continental plate.
Where does most magma originate?
Most melts on earth originate from plate boundaries. These are areas where there is decompression melting or hydrous melting because of subduction zones.
What boundary do subduction zones form on?
Subduction zones form along some tectonic plate boundaries. Of the three general types of tectonic plate boundaries, we will see them form at some (but not all) of what are called convergent plate boundaries.
