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Progradation
In
sedimentary geology
and
geomorphology
, the term
progradation
refers to the growth of a
river delta
farther out into the sea over time. This occurs when the
mass balance
of sediment into the delta is such that the
volume
of incoming
sediment
is greater than the volume of the delta that is lost through
subsidence
,
sea-level rise
, and/or
erosion
.
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