The body is constant in its size and shape. The tail of the flow contains the least amount of sediment and thins away from the body lagging behind and depositing sediments in the low flow regime. These sedimentary structures record the decay of flow velocity as it passes a point from the upper flow regime to the lower flow regime commonly showing a fining upwards facies appearance. A has a scoured base, poorly sorted and massive. This part of the sequence was laid down in the upper flow regime however turbulence was reduced owing to factors relating to the boundary layer.
B contains laminated sand without fines signifying still in the upper flow regime.
This unit contains finer grain size and more well sorted than A. Unit C contains cross-laminations with medium to fine sand. In some sequences climbing ripples have formed symptomatic of a moderate flow regime. The uppermost unit E consists of fines from sediment as the turbidity current finally wanes in velocity depositing the suspended sediment. Biological communities that rarely experience severe disturbance are likely to lose many species because their selection regimes have not filtered out organisms with low resistance or resilience. This effect is greater owing to the organisms that live in these waters have not adapted to this type of disturbance.