Turbidites are sedimentary rocks formations that result from turbidity currents. Turbidity currents are essentially underwater avalanches or landslides of sand or mud.The debris deposited as a result of these subaqueous flows typically forms a graded bed of sediment built up at the base of a submarine slope.urbidity currents are rapid, underwater avalanches or landslides of sand or mud. What is important is that because of the stirred up sediment that the current contains, its density is greater than water and so it flows down slopes and spreads out on horizontal surfaces at the bottom of the slope.