Continental margin sedimentation: evolution of the seismic sequence stratigraphic model

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Passive continental margin sedimentation in deep and ultra deep water consists of inter-twined complexities in processes that include sediment supply and tectonic and sea level forcing functions, as considered in conventional sequence stratigraphic models, but also processes such as sediment reworking by deep ocean currents and sediment mass-failures at scales that have heretofore not been accounted. Lack of recognition of these latter sedimentation processes led to development of sequence stratigraphic models, vital to offshore hydrocarbon exploration, that fail to accurately capture deep water sediment distribution patterns. Canyon formation and large scale erosional unconformities further complicate the predictive capability of these models.