progradation


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progradation

(ˌprəʊɡrəˈdeɪʃən)
n
(Physical Geography) (of shore or shoreline) the advance seawards due to the build up of sediment
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Ponten & Plink-Bjorklund (2007) advocated that there was a change from the progradation to aggradation from the lower to the upper part of the Gauja RS, coupled with a decrease in tidal influence and a decrease in the coarsegrained sediment input.
Human influence and the changing geomorphology of Mediterranean deltas and coasts over the last 6000 years: From progradation to destruction phase?
This unusual character of incised valley-fill sequence can be accounted for by rapid and high amplitude sea level fall and progradation occurred on a narrow and steeper gradient continental shelf.
2012): Footwall progradation in syn-rift carbonate platform slope systems (Early Jurassic, Northern Apennines, Italy).
Variations that occur in peat type within the deposits reflect the succession and lateral migration of the surface vegetation and the associated environment concurrent with coastal progradation (Murtedza et al.
Specimen assemblages variously composed of freshwater, freshwater-tolerant, brackish, and marine taxa indicate mixing on a floodplain with limited sediment accumulation through deltaic progradation or river avulsion as, in part, envisaged by Ludvigson and Witzke (14).
We attribute this change to the progradation of a megafan-like wedge of sediment from the Caledonia Highlands that caused differential loading, trapping of coarse-grained clastics in proximal areas, rapid salt withdrawal, and pronounced uplift of the Minudie Anticline diapir.
Regarding the effects on the Amazonian coastal region, Muehe and Neves (1995) suggest that progradation of tide into the low elevation rivers such as those in northern Brazil will reflect mangrove loss resulting from coastal erosion.
Second, temporal patterns in the formation of mound groups show that despite the existence of earlier mound deposits, discard foci shifted seaward--towards estuaries--in contexts in which shorelines moved as a result of progradation.
The progradation of fans and denudation deduced from the gravel dispersal suggests that the Recent and Sub-recent deposits are continually uplifted, due to deformation along the Salt Range Thrust.
Such a sedimentary switch might represent the local progradation of higher energy transverse deposits over lower energy axial or centripetal systems, not a Zagros wide pulse of deformation.
The basin had evolved through a deep foreland basin ('flysch') phase during late Eocene-Oligocene times, followed by post-Oligocene ('molasse') phase of shallow marine shelf progradation to present day.