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accretionary prism

Saltos de línea: ac|cre¦tion|ary prism
(also accretionary wedge)

Definición de accretionary prism en inglés:

sustantivo

Geology
A mass of sedimentary material scraped off a region of oceanic crust during subduction and piled up at the edge of a continental crustal plate.
Example sentences
  • There is a continuing loss of some sediment into the mantle at subduction zones, although the ‘conveyor-belt’ system of plate tectonics ensures that most sediment is added to the accretionary wedge of the overriding plate.
  • This assemblage is interpreted as the accretionary prism of an active continental margin.
  • The most widely accepted view is that of an accretionary prism developed above an active subduction zone.

Definición de accretionary prism en:

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