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3.1.1.2 Tectonic hazards (part a) Typeit
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Earthquakes and volcanoes typically occur along plate . Some are constructive. Here, plates are being forced . Shallow focus earthquakes can occur as the move. Magma rises to fill the gaps between plates. This forms . Some margins are destructive. Here, plates are pushing into each other. These margins are characterised by focus earthquakes. When one oceanic plate and one continental plate collide in this way, the plate melts and magma rises to the surface. It forms volcanoes such as Soufrière Hills, Montserrat.