Spreading centres are ideal locations for peaceful volcanism because:

Question

Quizplus · Accepted Answer

All of the given options contribute to spreading centres being ideal locations for peaceful volcanism. The high-temperature asthenosphere (option A) provides a source of heat for melting rocks, while the low percentages of SiO₂ (option B) mean that the magma produced is less viscous and more easily able to flow. Option C also plays a role, as the oceanic plate pulling apart allows for the ascending hot asthenosphere rock to melt and create magma. Finally, the low-viscosity nature of basaltic magma (option D) means that gases can escape more easily, leading to less explosive eruptions.

Spreading Centres Are Ideal Locations for Peaceful Volcanism Because