These earthquakes are caused by the movement of magma beneath the Earth's surface. They are often associated with volcanic eruptions, but they can also occur before or after an eruption.

Tectonic earthquakes

These earthquakes are caused by the movement of tectonic plates. Tectonic plates are large pieces of the Earth's crust that are constantly moving. When two tectonic plates collide, the energy released can cause an earthquake.

Collapse earthquakes

These earthquakes are caused by the collapse of underground caverns or mines. They are often small, but they can sometimes be quite large.

Induced earthquakes

These earthquakes are caused by human activity, such as the injection of fluid into the ground or the extraction of oil and gas. Induced earthquakes are becoming more common as human activity increases.

Aftershocks

These earthquakes are smaller earthquakes that occur after a larger earthquake. They are caused by the continued movement of the Earth's crust after the main earthquake.