Explain the similarities and differences between the Andean and Hawaiian style volcanism. Include information about their composition and plate tectonic environment (type of boundary if applicable).

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Andean Volcanic is a major volcanic along the Andean cordillera in South America while a Hawaiian eruption is a volcanic eruption where lava flows from the vent in a low level eruption.

Differences between Andean Volcanic and Hawaiian style volcanism

The characteristics of pyroclastic (Andean volcanic) deposits are influenced by accumulation rate and by the amount and rate of cooling. Hawaiian vocanic demonstrates that welding and agglutination can occur at distances of a few kilometres from the vent.

The acts generates:

  • eruptive parameters such as exit velocity, ejection angle,accumulation rate;
  • wind velocity
  • particle characteristics, size, shape,density, chemical composition and initial temperature.

Variations produce deposits ranging from brittle, unwelded lapilliand bombs to highly welded spatter with coalescence of clasts.

Therefore, the difference is that Andean volcanic is a product of accumulation and cooling while Hawaiian volcanic is erupted from a few distance of kilometers from the vent.

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