lava dome

短语

火山穹丘

词形变化

lava domes 复数 lava domes

释义与例句

n.
  1. 1.

    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.

    火山穹丘

    地质

    Lava domes are rarely seen in shield volcanos.

    Mount St. Helens has been building a new lava dome since the May, 1980 eruption.