Question

Magma chambers are found in lower mantle.
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Answer 1

Answer:

Magma chambers have been detected beneath the crest of the East Pacific Rise by seismic experiments. 

Explanation:

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Answer 2

Explanation:

The molten rock, or magma, in such a chamber is less dense than the surrounding country rock, which produces buoyant forces on the magma that tend to drive it upwards. If the magma finds a path to the surface, then the result will be a volcanic eruption; consequently, many volcanoes are situated over magma chambers.