lava dome
nounDefinitions
A convex volcanic structure made of generally viscous, felsic lava, which grows slowly…
A convex volcanic structure made of generally viscous, felsic lava, which grows slowly over time by extrusion from a volcanic edifice, either endogenously, by inflating from within, or exogenously, as erupted flow lobes of lava.
- Lava domes are rarely seen in shield volcanos.
- Mount St. Helens has been building a new lava dome since the May, 1980 eruption.
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sense glosses and etymology drawn from English Wiktionary · source · CC-BY-SA