Here's a breakdown:
* Eurasian Plate: This is the larger plate that Iceland sits upon.
* North American Plate: This plate is moving westward, pushing against the Eurasian Plate.
This collision between the plates creates a divergent plate boundary where the plates are pulling apart. This separation allows magma from the Earth's mantle to rise to the surface, creating volcanoes.
Eyjafjallajökull is one of many volcanoes that have been formed by this process. The 2010 eruption was caused by the movement of magma beneath the volcano, which eventually broke through the surface and erupted.
