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At a(n) convergent boundary partial melting can form a volcanic island arc.

This statement is True.

What is a Volcanic arc?

  • A volcanic arc, also called a magmatic arc 6.2, is a belt of volcanoes that erupted above an oceanic tectonic plate that is subducting.
  • From above, the belt appears to be arranged in the shape of an arc.
  • Volcanic arcs commonly run parallel to oceanic trenches, but the arc is farther away from the subducting plate.
  • The oceanic plate is largely made up of hydrous minerals like micas, amphiboles, and serpentine minerals, which are saturated with water.
  • As the oceanic plate subducts, the pressure and temperature on it rise as the depth increases.

How do volcanic islands form?

  • At the edge of subduction zones, volcanic island arcs emerge.
  • They are created when a subducting plate partially melts.
  • Trenches or large oceanic depressions are also present with them.
  • Two tectonic plates colliding causes subduction to happen.

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