溶よう岩がん円えん頂ちょう丘きゅう

noun

lava dome

A mound-shaped protrusion formed by the slow extrusion of viscous lava from a volcano. Technical term used in geology and volcanology.

• 昭しょう和わ新しん山ざんは溶よう岩がん円えん頂ちょう丘きゅうの一いち例れいです。

  Shōwa-shinzan is an example of a lava dome.