spatter rampart

spatter rampart

[′spad·ər ‚ram‚pärt]
(geology)
A low, circular ridge of pyroclastics built up around the margins of small volcanoes.
References in periodicals archive ?
Hummocky ridges are formed when the fissure eruption becomes confined to several vents along its length, similar to spatter cones or spatter ramparts that form along fissures in Iceland and Hawaii.