Sediment Classification - Springerand a coarser classification (gravel, sand, and mud). In the laboratory, it is possible, using sieves of different sizes, to prepare samples with very a well-controlled.size of sand and gravel,SAND, SILT and CLAYclassification system divides the particles into four classes - gravel and stone, sand, silt, and clay. Table. 1 lists the Canadian classification system for the size.size of sand and gravel,A History of Particle-Size Limits - Iowa Publications Onlinefine sand. 0.5-0.25 very fine sand. < 0.25 and a permanent committee for soil investigation (14) proposed: Size, mm stone, gravel. > 5 fine gravel. 5-2 very coarse.
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