Sorting (sediment)
（重定向自Well sorted）
![Sediment consisting of well sorted grains (left) compared with poorly sorted grains (right).](/Images/godic/202502/20/Sorting_in_sediment.svg3200.png")
Sorting describes the distribution of grain size of sediments, either in unconsolidated deposits or in sedimentary rocks. Very poorly sorted indicates that the sediment sizes are mixed (large variance); whereas well sorted indicates that the sediment sizes are similar (low variance).