Which of the following factors causes an explosive eruption from a composite volcano? A. Mantle plumes
B. Large buildup of pressure from gases
C. Pyroclastic flows
Which of the following factors causes an explosive eruption from a composite volcano?
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The correct answer is B. Large buildup of pressure from gases.
Composite volcanoes, also known as stratovolcanoes, are characterized by their explosive eruptions, which are primarily caused by the accumulation of gas pressure in the magma beneath the surface. When this pressure becomes too great, it results in a powerful eruption, often ejecting ash, lava, and volcanic gases into the atmosphere.
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