TERMIUM Plus®

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PIROCLASTICO [1 record]

Record 1 2012-03-07

English

Subject field(s)
  • Vulcanology and Seismology
  • Petrography
DEF

Formed by fragmentation as a result of volcanic or igneous action.

CONT

Pyroclastic (fire-broken) textures are formed by explosive fragmentation.

CONT

Pyroclastic rocks consist of fragmental volcanic material which has been blown into the atmosphere by explosive activity. They are generally produced from volcanoes whose lava is of a more viscous type.

OBS

Not to be confused with "volcanic."

PHR

Pyroclastic bed, tuff.

French

Domaine(s)
  • Volcanologie et sismologie
  • Pétrographie
DEF

S'applique aux débris de roches magmatiques éjectés par les volcans, et dont l'accumulation donne des roches pyroclastiques : cendres, lapillis, etc.

CONT

[Les] produits à haute viscosité sont projetés dans l'atmosphère, et leur chute s'observe plus ou moins loin autour de la bouche volcanique, à l'état de débris solides incohérents. On les qualifie de produits pyroclastiques (brisés par le feu) ou éjecta.

CONT

Fragments pyroclastiques.

PHR

Couche, tuf pyroclastique.

Spanish

Campo(s) temático(s)
  • Vulcanología y sismología
  • Petrografía
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