Tag Archives: Subduction-Zone Volcanism

On May 18, 1980, Mount St. Helens, a stratovolcano in southwestern Washington State, USA, experienced a violent eruption, spewing ash and steam into the atmosphere.
1980: The Explosive Eruption of Mount St. Helens

The 1980 eruption of Mount St. Helens, marked by a massive ash cloud and landscape [...]