Plate Margins

Plate Margins

1. Conservative Plate Margin

   • Two plates rubbing against each other in almost similar direction but at different angles and speeds.
   • One is going faster than the other and eventually they get stuck.
   • As they remain stuck, pressure builds up between the two plates causing them to move apart, releasing the pressure.
   • This release in pressure causes an Earthquake.

2. Destructive Plate Margin

   • Oceanic crust subducts under continental crust
     • Collision boundary
       • This is when two continental plates collide head-on
       • But instead of one sinking under the other, they buckle.
   • Friction and heat from mantle cause Oceanic crust to melt
   • Pressure is exerted when Oceanic crust melts, this results in an Earthquake.
   • Magma rises up and forms a volcano in the continental crust

3. Constructive Plate Margin

   • In a constructive plate margin, the plates are moving apart.
   • This means there is a gap where there once was solid land.
   • Cracks and fissures begin to open up in the land and magma and ash make their way through.
   • The magma then goes through to the atmosphere and ocean and this forms volcanoes.