TERMIUM Plus®

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COUCHE BASALTIQUE [1 record]

Record 1 2012-02-09

English

Subject field(s)
  • Vulcanology and Seismology
DEF

The seismic discontinuity at a depth of around 20 km between the upper and the lower crusts beneath a continent and an island arc.

OBS

Conrad discontinuity: The term has fallen into disuse in recent years due to the lack of universality of such a discontinuity.

French

Domaine(s)
  • Volcanologie et sismologie
DEF

Limite, souvent discutée, séparant la croûte supérieure de la croûte inférieure.

CONT

La couche granitique et la couche basaltique seraient séparées par la «discontinuité de Conrad»; mais celle-ci est souvent mise en doute : jusqu'à maintenant, elle n’ a pas donné de réflexions certaines, de sorte qu'il est possible qu'on passe graduellement de la couche granitique à la couche basaltique [...]

Spanish

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

[Discontinuidad que], a unos 17 km de profundidad, marca la transición entre el sial granítico de los continentes y el sima basáltico subyacente.

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