Topic Summaries

Key features of plate margins

IGCSE > Geography > CIE > IGCSE Geography Topic Summaries > Tectonic plate margins > Key features of plate margins
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Weather hazards and atmospheric circulation

Tropical storm hazards

Responding to tropical storms

Hot desert ecosystems

Cold environment ecosystems

Glacial landscapes

Glacial landform processes

Water supply

Energy supply

Destructive margins Constructive margins Conservative margins
Crust is destroyed in subduction zones New crust is created from magma No crust created or destroyed
Severe earthquakes Shallow earthquakes Powerful earthquakes
Explosive volcanoes with silica-rich magma Volcanoes with basaltic lava (runny, less explosive) No volcanic activity as no magma rises
Creates fold mountains and trenches Creates mid-ocean ridges Creates fault lines

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