Large plinian eruptions--such as during 18 May 1980 at Mount St. Helens or, more recently, during 15 June 1991 at Pinatubo in the Philippines--can send ash and volcanic gas tens of miles into the air.

The following are examples of famous volcanic eruptions. ... For a list of other volcanic eruptions, see Recent Volcanic Activity and Earthquakes and Volcanic Eruptions at Infoplease.com.

More on Types of Volcanic Eruptions from Fact Monster: ... Volcanic Eruptions - Volcanic Eruptions A volcanic eruption occurs when molten rock, ash and steam pour through a vent ...

Deadliest Volcanic Eruptions Since 1500 A.D. ... 2 Blong, R.J., 1984, Volcanic Hazards: A Sourcebook on the Effects of Eruptions: Orlando, ... NEXT - 20th Century Volcanic Eruptions and Their Impact

Volcanic activity is classified by how often a volcano erupts. A volcano may be active, intermittent, dormant, or extinct. Active volcanoes erupt constantly.

This interactive exhibit, part of the Exhibits Collection, explores why volcanic eruptions occur.

The following table lists the deadliest volcanic eruptions in the world on record according to name, year, number of deaths, and major cause of deaths.

Aso Volcano, continuous volcanic tremor following very small phreatic eruptions (07/28/03)

This website is an educational resource that describes the science behind volcanoes and volcanic processes. ... HISTORICAL ERUPTIONS

Recent Volcanic Eruptions/Activit ... ; THE 30 BIGGEST VOLCANIC EVENTS (January 1998 - present) ... 2) Rincon de la Viaje, Costa Rico 12) Masaya, Nicaragua 22) Guagua Pichincha, Ecuador