Turbidity currents are important agents of transport to the deep sea. These powerful bottom currents are sediment-laden slurries which, under the influence of gravity, move rapidly downslope as turbulent underflows that push aside less dense water. It's presence and location depends on the rate of supply of carbonate and the acidity, temperature and pressure of the water.
Sediments accumulate very slowly into the ocean bottom.
Siliceous oozes form where there are abundant nutrients in the surface water. Calcareous oozes form in areas of high productivity but dissolve when they settle into deep water. Red clay deposits form far from continents and in areas with low biological activity.