3D model of Mount St. Helens after the 1980 eruption

Posted By sculpteo on Jan 31, 2011 | 0 comments

The eruption itself was preceded by two months of earthquakes and steam jets caused by the infiltration of magma at shallow depth below the mountain.

This magma provoked a network of fractures and deformations in the north side of the volcano; on May 18, 1980 at 8:32 am, an earthquake triggered a massive landslide on the north face. In less than twenty seconds, the magma erupted in the form of a pyroclastic flow.