1 Recognise the command terms



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Case Study - All Combined Studies
Case Study Detail
Mount St Helens is on the plate boundary between the Juan de Fuca plate and North American plate. When it erupted it permanently changed the surrounding landscape. A destructive plate boundary. Prior to the eruption there were over
10,000 earthquakes. The final earthquake triggering a massive landslide (the largest landslide recorded. The volcanic plug blocked the exit to the volcano so magma started to push its way sideward and created a cryptodome to the North of the mountain. The landslide triggered the eruption creating a lateral eruption and released a pyroclastic flow travelling well over mph and over o c.

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