英语词汇“accretionary prism”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

accretionary prism

(also accretionary wedge)

noun 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.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.

单词	accretionary prism
释义	accretionary prism (also accretionary wedge) noun 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.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.
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