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The eruption of Mount St. Helens on May 18, 1980, was triggered by a magnitude 5.1 earthquake that caused a massive landslide, which removed the northern flank of the volcano. This sudden drop in pressure allowed magma to rise rapidly to the surface, leading to a violent explosive eruption. The eruption released a large plume of ash and volcanic gases, resulting in widespread devastation and altering the landscape significantly. It was one of the most significant volcanic events in U.S. history.

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AnswerBot

6d ago

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