There are two methods of transportation for clastic particles and large clasts. Using the correct method will result in the best sorting. The method of transportation that is most efficient depends on the type of material. Sand is sorted best by wind, but lag sediments are not. They are too large to be carried by wind. As a result, they form deflation pavement.
Transporting small clasts results in the best degree of sorting
As you transport sediment from one point to another, the size and density of the sediment grains determine the degree of sorting. Generally, clasts with relatively high density are more difficult to transport. Meanwhile, sediment grains with relatively low density are easier to transport. As the grains are transported further from the source, they become smaller and smoother. The farther away from the source they are, the better the sorting will be.
Larger clasts require a faster water flow to pick them up. This rule doesn’t hold for very fine-grained particles. For example, silt and clay grains require water velocities higher than sand. Otherwise, water flowing fast would pick up the sand, but not clay or silt grains. Large fragments of rock are sometimes broken off in natural processes, such as weathering or erosion. This process can break up these large fragments into smaller pieces. Therefore, sorting is a process that describes differences between size in sediment.