TERMIUM Plus®

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REGIONAL METAMORPHISM [1 record]

Record 1 2010-12-16

English

Subject field(s)
  • Petrography
DEF

The recrystallization of pre-existing rocks in response to simultaneous changes of temperature, lithostatic pressure, and in many cases shear stress, occurring in orogenic belts where lithospheric plates are converging.

OBS

The broad areas covered by orogenic belts cause the associated metamorphism to be developed on a regional scale, hence the name attached to this type of metamorphism.

OBS

As opposed to "local metamorphism."

OBS

regional metamorphism: term used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Pétrographie
DEF

Métamorphisme qui affecte l'ensemble des roches sur des épaisseurs et des surfaces importantes.

CONT

Le métamorphisme régional est généralement attribué à l'enfouissement des roches considérées, accompagné d'une augmentation de température et de pression.

OBS

métamorphisme général : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

Campo(s) temático(s)
  • Petrografía
DEF

[Metamorfismo] que se produce debido al hundimiento de las series sedimentarias hacia niveles más profundos, a distintas condiciones de presión y temperatura.

CONT

El metamorfismo general o regional, que es el más común de todos, afecta a las rocas que, al hundirse a profundidades de 10 a 20 km, son modificadas por el calor y la presión. Generalmente se extiende por el fondo de un geosinclinal y en un espesor de hasta decenas de kilómetros. Es el caso de los neis y los micaesquistos.

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