Catalonia PAU Geology & Env Sci Practice Questions - Catalonia PAU Geology And Environmental Sciences (Geologia I Ciències Ambientals - PAU Catalunya 2026) Exam

Access More Questions

Which mechanism is primarily responsible for generating calc-alkaline magmatism and explosive volcanism at island arc systems?

Flux melting of the mantle wedge triggered by dehydration of subducted oceanic crust. Decompression melting of upwelling asthenospheric mantle beneath continental rifts. Isothermal decompression along mid-ocean ridge transform offsets. Conductive heating of continental lithosphere over a stationary mantle plume.

Correct Answer:

Flux melting of the mantle wedge triggered by dehydration of subducted oceanic crust.

Access more questions from this quiz

Continue to Catalonia PAU Geology & Env Sci Practice Questions - Catalonia PAU Geology and Environmental Sciences (Geologia i Ciències Ambientals - PAU Catalunya 2026) Exam for more practice questions and the full quiz experience.

Access More Questions