Differential compaction as a control on depositional architectures across the Maiella carbonate platform margin (central Apennines, Italy)

摘要: Abstract The role of differential compaction as a control in the creation accommodation and on compaction-modified depositional features stratal geometries across Maiella platform margin, has been investigated through combined analysis seismic scale outcrops, porosity evaluation modeling. Geologic evolution large exposures make margin an ideal place to investigate effects compaction. A high-relief cemented carbonate platform, deep basin filled with highly compactable deposits, prograding grain-rich succession sealing morphologic differences represent suitable for promoting Stratal relationships exhibit evidence compaction-induced effects, such basinward divergence thickening strata, updip pinch-out wedge-shaped packages, anticline hinge. Porosity modeling indicate that, progressive loading, mechanical chemical processes act concert destroy most porosity. Mechanical appears have played greatest part total budget However, seems prominent formation geometrically consistent profiles during progradation. Due hinge formed concomitantly beginning progradation, producing basin-facing monocline characterized by steepening dips. resulting deformation, together sea level changes, controls distribution, timing packages late Cretaceous Paleocene distribution coral–algal reef buildups, Eocene–early Oligocene. development usually follows increase but decrease dissipation may be caused overburdening deposits. This will cause delayed subsidence, whose produced after deposition, i.e. loading interruption. mechanism is thought important subsidence throughout end early Tertiary, it considered, level, main controlling process occurrence downslope sediments, long-lasting period emersion.