pyroclastic density current

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Noun

1. a [[pyroclastic flow]]; a [[gas]]-rich, [[hot]], [[dense]], ground-hugging [[torrent]] of [[ash]], [[lapilli]], and [[volcanic]] blocks that results from the [[gravitational]] [[collapse]] of a [[volcanic]] [[eruption column]], associated with [[explosive]] [[plinian]] and [[ultraplinian]] volcanic eruptions, and which produces a type of [[volcaniclastic]] [[deposit]] called an [[ash-flow]] [[tuff]] or an [[ignimbrite]].

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.