USGS CMG InfoBank: Explosiveness of An Eruption

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Comment: 08:18 - 08:40 (00:22)
Source: Annenberg/CPB Resources - Earth Revealed - 13. Volcanism
Keywords: volcano, "volcanic gas", eruption, temperature, composition, magma, silica, viscosity

Our transcription: Along with the impact of gas content, the explosiveness of an eruption is also influenced by the temperature and chemical composition of its magma.
Magma rich in silica is typically cooler and more viscous than magma with a lower silica content.
This results in eruptions that are extremely explosive.

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