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In Explosive Volcanic Eruptions?

Alexander Ross • • 6 min read
In Explosive Volcanic Eruptions?

Explosive eruptions

Explosive eruptions
In volcanology, an explosive eruption is a volcanic eruption of the most violent type. ... Such eruptions result when sufficient gas has dissolved under pressure within a viscous magma such that expelled lava violently froths into volcanic ash when pressure is suddenly lowered at the vent.
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occur where cooler, more viscous magmas (such as andesite) reach the surface. Dissolved gases cannot escape as easily, so pressure may build up until gas explosions blast rock and lava fragments into the air! Lava flows are much more thick and sticky so do not flow downhill as easily.

What happens during an explosive volcanic eruption?

Explosive eruptions

If a lot of gas is trapped within magma, pressure will build and build until eventually the magma erupts explosively out of the volcano. ... This eruption formed a new island. Explosive eruptions can form pyroclastic flows that sweep down valleys, destroying everything in their path.

What causes an explosive volcanic eruption?

A volcano's explosiveness depends on the composition of the magma (molten rock) and how readily gas can escape from it. As magma rises and pressure is released, gas bubbles (mainly of water vapor and carbon dioxide) form and expand rapidly, causing explosions.

Alexander Ross
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Alexander Ross

Alexander Ross has covered the video game industry for a decade, writing deep dives on game design, esports tournaments, VR developments, and gaming culture.