Why does it make sense that the breaking of the supercontinent into two land masses was accompanied by massive volcanic eruptions?

Answer 1

The breaking of a supercontinent into two land masses is often associated with tectonic activity, which can lead to rifting and the formation of new oceanic crust. This process generates significant geological stress and heat in the Earth's mantle, resulting in the melting of rocks and the ascent of magma to the surface. The release of pressure and the movement of tectonic plates can trigger massive volcanic eruptions, as hot magma finds pathways to escape. Thus, the volcanic activity is a natural consequence of the dynamic processes involved in continental breakup.