Constructive Margin

• What are the arrows like a constructive plate margin?

  Moving away from each other
• What plate boundary is this?

  Constructive

  
• Earthquakes forming at a constructive plate margin:


  • As plates move apart, faults are formed at the margin and earthquakes can occur here which are usually of low magnitude.
  • Some may be linked to volcanic activity, most happen at shallow depths below the surface where the plates are moving apart
• Volcanoes forming at a constructive plate margin:


  • As two plates move apart, magma rises through the crust and some can erupt producing volcanoes, usually gentle sided basic lava cones
• Which plate margin do shield volcanoes form?


  Constructive
• Give an example of a shield volcano and its characteristics:


  Mount Kīlauea

  -Low gentle sloping side

  -Eruption of thin, runny basic lava

  -Lots of eruptions but relatively non-violent