A dense, destructive mass of very hot ash, lava fragments, and gases ejected explosively from a volcano and typically flowing at great speed.
〔地质〕火山碎屑流，火山灰流
Example sentencesExamples
They may be buried in place by inundation of sediment or even by lavas or pyroclastic flows.
The eruption has been characterized by lava dome extrusion, dome-collapse pyroclastic flows and explosive activity.
The pyroclastic deposits mainly consist of block-and-ash, blast, tephra fallout and secondary pyroclastic flow deposits.
Even scarier and more destructive than volcanic mudflows are pyroclastic flows or glowing avalanches.
And they also say there's a potential danger from pyroclastic flows.
Definition of pyroclastic flow in US English:
pyroclastic flow
noun
Geology
A dense, destructive mass of very hot ash, lava fragments, and gases ejected explosively from a volcano and typically flowing downslope at great speed.
〔地质〕火山碎屑流，火山灰流
Example sentencesExamples
The eruption has been characterized by lava dome extrusion, dome-collapse pyroclastic flows and explosive activity.
And they also say there's a potential danger from pyroclastic flows.
The pyroclastic deposits mainly consist of block-and-ash, blast, tephra fallout and secondary pyroclastic flow deposits.
Even scarier and more destructive than volcanic mudflows are pyroclastic flows or glowing avalanches.
They may be buried in place by inundation of sediment or even by lavas or pyroclastic flows.