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Volcano Watch: Volcanoes, landslides and angry gods — a Pacific Northwest connection

May 28 2017 - 12:05am || Comments

Eruptions are not the only hazard created by volcanoes. They can create havoc millions of years after their fires have grown cold because with time, their deposits can weaken to produce landslides. This happens because volcanic deposits are commonly rich in volcanic glass, a non-crystalline form of silica. In wet climates, this glass can readily transform into soft, weak minerals (primarily clay) through chemical weathering.