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Triggers Of Volcanic Eruptions In Oregon's Mount Hood Investigated

A new study has found that a mixing of two different types of magma is the key to the historic eruptions of Mount Hood, Oregon's tallest mountain, and that eruptions often happen in a relatively short time--weeks or months--after this mixing occurs.

This behavior is different from that of most other Cascade Range volcanoes, including Mount Hood's nearby, more explosive neighbor, Mt. St. Helens.

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