Volcanic eruptions along the west coast of North America are due to
A) hotspot plume activity in the mantle.
B) divergent plate boundaries resulting in a spreading ridge.
C) collision zones that result in mountain building.
D) convergent plate boundaries where subduction occurs and generates melts.
E) transform plate boundary where plates slide past one another.

Question

Quizplus · Accepted Answer

Volcanic eruptions along the west coast of North America are due to convergent plate boundaries where subduction occurs and generates melts. The subducting oceanic plate gets melted as it moves deeper into the Earth's mantle, and the resulting magma rises up to the surface, leading to volcanic activity.

Volcanic Eruptions Along the West Coast of North America Are