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A small phreatic eruption occurred at Mount St. Helens in the spring of 1980, prior to the catastrophic eruption on May 18, 1980. The phreatic event released steam and volcanic gases.
LMY25T03_CEWA3H

A small phreatic eruption occurred at Mount St. He...

Montagne Pelée 1902
LMY25T03_P8050E

Montagne Pelée 1902

The Pinatubo 91 ash deposits, dated June 26, 1991, are remnants of the eruption of Mount Pinatubo, one of the largest volcanic eruptions of the 20th century. The ash deposits are an important geologic...
LMY25T03_D70BEM

The Pinatubo 91 ash deposits, dated June 26, 1991,...