Question

How deep below earths surface do rocks start to melt

Answer 1

Magma rises with convective currents, then cools and spreads out to form ocean-floor crust. The starting point for melting has long been thought to be at 70 kilometers beneath the seafloor.

Answer 2

Magma rises with convective currents, then cools and spreads out to form ocean-floor crust. The starting point for melting has long been thought to be at 70 kilometers beneath the seafloor.