1.4a A volcano that has had an eruption of VEI 8 is known as a supervolcano

A supervolcano is any volcano that is known to have had an eruption of VEI 8 on the eruption scale. Yellowstone caldera and Lake Tobo are both supervolcanoes. Eruptions of supervolcanoes are often associated with mass extinction events .

Previous: 1.4 The Volcanic Explosivity Index is a scale used to measure the size of explosive eruptions.