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.
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:
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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