Question

At subduction zones, magma is generated by _________________, while most other environments (e.g. hot spots, divergent) produce magma by __________________.

Answer 1

Magma is generated by subduction zones through the release of water from hydrated minerals in the subducting oceanic crust. On the other hand, most other environments such as hot spots and divergent plate boundaries produce magma by an increase in temperature of the rock due to mantle plumes or reduced pressure conditions, respectively.

Step-by-step explanation:

Magma is generated by subduction zones through the release of water from hydrated minerals in the subducting oceanic crust. This water lowers the melting temperature of the mantle and causes magma to be produced. On the other hand, most other environments such as hot spots and divergent plate boundaries produce magma by an increase in temperature of the rock due to mantle plumes or reduced pressure conditions, respectively.

Answer 2

Answer: At the subduction zone, magma is generated by Flux Melting

while

Most other environments (e.g. hot spots, divergent) produce magma by Decompression Melting.