plug dome

plug dome

[′pləg ‚dōm]
(geology)
A volcanic dome characterized by an upheaved, consolidated conduit filling.
References in periodicals archive ?
Lassen Peak is one of the largest plug dome volcanoes in the world, and its most recent violent eruptions from 1914 to 1917, photographed by B.
Eruptions from 1914 to 1921 put this 10,457-foot plug dome on the map.
If the dome plugs the vent, it is called a plug dome volcano.