(also accretionary wedge)
Definition of accretionary prism in English:
A mass of sedimentary material scraped off a region of oceanic crust during subduction and piled up at the edge of the overriding 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.
Definition of accretionary prism in:
- British & World English dictionary
What do you find interesting about this word or phrase?
Comments that don't adhere to our Community Guidelines may be moderated or removed.
Most popular in the US
Most popular in the UK
Most popular in Australia
Most popular in India
Most popular in Pakistan