Adjective "accretionary" definition and examples

(Accretionary may not be an adjective, but it can be used as an adjective, click here to find out.)

Definitions and examples


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.
  1. 'A maximum age is indicated by the Cambrian Akaz seamount in an accretionary prism, the presence of which implies the existence of a trench adjacent to the arc.'
  2. 'This higher mobility is probably due to an extremely thin crust at the advancing edge of the overriding plate, easily affected by the growth or erosion of the accretionary wedge.'
  3. 'The most widely accepted view is that of an accretionary prism developed above an active subduction zone.'
  4. 'This assemblage is interpreted as the accretionary prism of an active continental margin.'
  5. 'The Dzag schists to the north of the ophiolite zone have previously been interpreted as part of an accretionary wedge.'
  6. '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.'
  7. 'This style of flow is not unexpected at deep levels of an accretionary prism like the Otago Schist that is being thickened by underplating from below.'
  8. 'It seems unlikely that an ophiolite fragment 300 km long would remain intact and unmixed with the rest of the rocks in an accretionary wedge.'
  9. 'Episodes of differential uplift are attributed to active subcretion building culminations above blind imbricate thrusts deep in the accretionary prism beneath the coast.'
  10. 'In ancient accretionary wedges elsewhere, they typically overlie chert sequences and are commonly interpreted to have accumulated upon oceanic crust close to a convergent margin.'

More definitions

1. an increase by natural growth or by gradual external addition; growth in size or extent.

2. the result of this process.

3. an added part; addition: The last part of the legend is a later accretion.

4. the growing together of separate parts into a single whole.

5. Law. increase of property by gradual natural additions, as of land by alluvion.

More examples(as adjective)

"prisms can be accretionary."

"effects can be accretionary."

"wedges can be accretionary."

"terms can be accretionary."

"tectonicses can be accretionary."

More examples++