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Index / Natural Phenomena / Volcanic Eruption

Natural Phenomena

Volcanic Eruption

Magma breaching the crust

Molten rock, gas, and ash rise through a conduit when buoyancy and dissolved volatiles overcome overburden pressure. Silica-rich magmas trap gas and erupt explosively; low-silica basalts flow. A single VEI 7 eruption can inject enough sulphate aerosol to cool the planet for years.

Key specifications

Lava temp

700 – 1,200 °C

Plume height

up to 40 km (VEI 8)

Scale

VEI 0 – 8 (logarithmic)

Active volcanoes

~1,350 on land

Sheet 003 · Plate 1 of 1 · 1:1 infographic

Volcanic Eruption
FIG. 003 — Volcanic EruptionBlueprint Atlas · Natural Phenomena

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