SACE Stage 2 Earth And Environmental Science Practice Questions - SACE Stage 2 Earth And Environmental Science External Assessment Exam

How does partial melting of mantle peridotite at a mid-ocean ridge boundary produce basaltic magma?

Addition of water lowers the solidus temperature of the mantle rocks. Decompression melting occurs as mantle material rises without heat loss. Thermal conduction from continental crust raises the temperature above the liquidus. Increase in lithospheric pressure converts solid peridotite directly into basaltic liquid.

Correct Answer:

Decompression melting occurs as mantle material rises without heat loss.

Access more questions from this quiz

Continue to SACE Stage 2 Earth and Environmental Science Practice Questions - SACE Stage 2 Earth and Environmental Science External Assessment Exam for more practice questions and the full quiz experience.

Access More Questions