Thus, several authors suggest that the accumulation of sandy deposits in a fluvially dominated, prograding
delta is the most possible sedimentary environment for the Sietini Fm.
lithofacies model for the Guaduas formation indicating continentalization of the basin.
--The Higueruelas and Villar del Arzobispo Fms were deposited in a prograding
carbonate platform affected by storms with an upwards decrease in oncoid development and increase in siliciclastic discharges from continental areas.
At the eastern, along the prograding
zone of the spits of the rivers, where the waves reached up to 0.5 m in some areas, mangroves were influenced the least by the waves.
Further, both of these spots showed similar rapidly prograding
longitudinal drifts with respect to System 3.
It extends and narrows back from the prograding
shoreline of Golden Bay as a triangle-shaped wedge of land.
The foreland basin was later overridden by and buried under the prograding
Oligocene-Recent shelf-slope system.
The shallower sands from C to G are very likely to be products of generally prograding
, proximal, and delta-front deposits, consisting of shore-face, lower and upper mouth bars and continental shelf deposits; this is buttressed by the high net-to-gross sand ratio observed in these reservoirs while the relatively deeper sands A, B, and H are likely to have been deposited in distal, shallow marine environments which is evidenced by the low net-to-gross sand ratio.
How much a beach is eroding or prograding
in any given location is due to some combination of these factors, which vary from place to place.
 Based on their lithologic column, Rashid et al., () had suggested a prograding
upward sequence for the Patala Formation.
A high proportion of these occur in the most actively prograding
areas in conjunction with recently formed estuarine wetlands.
The formation delineates prograding
clastic wedges that were associated with the Devonian Acadian orogeny (e.g., Dennison and Hasson, 1976; Faill, 1985).