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Definition of pyroclastic flow in English: pyroclastic flownoun Geology A dense, destructive mass of very hot ash, lava fragments, and gases ejected explosively from a volcano and typically flowing at great speed. 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 flownoun 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. 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.
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