What specific term is used to describe the phase marking the beginning of separation once the interior reached a molten state?

Answer

The iron catastrophe

The process often termed the iron catastrophe marks the transition when the molten interior allowed the dense iron and lighter silicates to begin separating into distinct layers.

What specific term is used to describe the phase marking the beginning of separation once the interior reached a molten state?
GeologyscienceEarthplanetdifferentiation