Lava-dome Definition

noun

(geology) A roughly circular mound-shaped bulge that builds up from the slow eruption of viscous felsic lava from a volcano.

Lava domes are rarely seen in shield volcanos, but are common in stratovolcanos because the latter have more silicic magmas.
Mount St. Helens has been building a new lava dome since the May, 1980 eruption.
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Other Word Forms of Lava-dome

Noun

Singular:
lava-dome
Plural:
lava-domes

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