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progradation

1. n. []

The accumulation of sequences by deposition in which beds are deposited successively basinward because sediment supply exceeds accommodation. Thus, the position of the shoreline migrates into the basin during episodes of progradation, a process called regression.

Antonyms: retrogradation

See: accommodationbedregressionsequence stratigraphy

Onlap, downlap, and progradation.