In What Direction Is The Molten Rock Most Likely To Move Through The Viscous Asthenosphere?

In What Direction Is The Molten Rock Most Likely To Move Through The Viscous Asthenosphere? Because the cooler and denser lithosphere is more rigid than the asthenosphere, the asthenosphere is pushed outward and upward. During subduction, the downward moving plate is heated, melting occurs, and molten rock flows upward to Earth’s surface. How does molten