Mammoth Memory

Shield Volcanoes – Volcanoes that are found on constructive plate margins

The shield that the Vulcan (shield volcano) used was easy to construct – you just cut out a plate and paint the margins (constructive plate margins).

The shield that the Vulcan (shield volcano) used was easy to construct – you just cut out a plate and paint the margins (constructive plate margins).

Shield volcanoes happen on constructive plate margins. This is where two plates move away from each other. A shield volcano has these characteristics:

  • Basic lava, which is non-acidic and very runny (low viscosity)
  • Gently sloping sides, because the lava flows for long distances before it solidifies
  • No layers, because the volcano consists of lava only
  • Less violent eruptions
  • Usually shorter periods between eruptions

 

Shield Volcano.

Shield Volcano.

 

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