Silt

Sediment or soil particles ranging from 0.002/0.004-0.05/0.06 mm in diameter. Sediments are seldom composed entirely of silt but rather are a mixture of clay, silt, and sand. Silt is extremely fine grains of soil or sediment usually carried along in river water. Silt deposits formed by wind are known as loess, a yellow, unconsolidated rock. The term has no implications of color, organic content, or any property other than particle size or texture.

A term describing the size of particles which go to make up a sediment, soil or similar material. Silt particles are those that lie between 0.06 and 0.002mm (BS 1377) in diameter (seeparticle size). The term has no implications of colour, organic content or any property other than particle size or texture.