Question

Three of the images show examples of settings where decompression melting is taking place. One image shows an example of a setting where flux melting is taking place. In which geological setting is flux melting taking place? Choose one: A. continental rift O B. transform fault C. mid-ocean ridge D. subduction zone O E. hot-spot volcano F. continental shelf

Answer 1

Answer is D: Subduction zone.

Reason: Flux melting occurs when there is addition of water to the hot mantle rocks which decreases its melting point because of which there is partial melting of ultramafic mantle rocks to yield mafic magma. This occurs at the zone of subduction.