Question
Describe magma formation in a spreading center, a hot spot, and a subduction zone.
Step 1
This separation creates a gap that is filled by hot, plastic asthenosphere that wells upwards. As the asthenosphere rises, the surrounding pressure drops, and pressure release melting forms magma. This process is also known as decompression melting. Show more…
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Describe three processes that generate magma in the asthenosphere.
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