Increases in clastic sediment accumulation rates are related to
either a tectonically driven uplift in the drainage basin, a climatic
change toward more seasonal and erosive conditions, an eustatic
sea-level fall exposing the continental shelf, or a combination of
these parameters. Differentiating between the tectonic, climatic
and eustatic causes of recorded high sediment fluxes is often
difficult (Bonnet and Crave, 2003).