Two plates move apart from each other, creating a gap or rift between them. Magma rises up and fills in the gap, creating new crust. Examples include the Mid-Atlantic Ridge and the East African Rift Zone.
Two plates move apart from each other, creating a gap or rift between them. Magma rises up and fills in the gap, creating new crust. Examples include the Mid-Atlantic Ridge and the East African Rift Zone.