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PRISME ACCRETION [1 record]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2021-07-14

English

Subject field(s)
  • Plate Tectonics
DEF

A mass of deformed trench sediments and ocean floor sediments accumulated in wedgelike slices on the underside of the overlying plate above a plate undergoing subduction.

OBS

accretionary prism; accretionary wedge: terms used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Tectonique des plaques
DEF

Dans le phénomène de subduction, partie de matériaux qui reste bloquée et qui n'entre pas en subduction, mais qui au contraire s'accumule (s'accrète) et forme un coin entre la plaque chevauchante et la plaque plongeante.

CONT

Des fragments de croûte océanique et de roches sédimentaires arrachés à la plaque en subduction forment un prisme d'accrétion et un haut topographique, le «haut externe de l'arc» [...]

OBS

prisme d'accrétion; biseau d'accrétion : termes en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

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