Sand is an example of a clastic sediment.
Silt and saand size particles are carried in suspension by wind, water and ice. Chemical or precipitated sediments which are carried in aqueous solution. Organic or biogenic sediments, precipitated or accumulated by biological agents. Many organisms promote the precipitation of calcite to form biogenically precipitated calcareous muds. Sediments are classified on the basis of the origin, size and mineralogical composition of the particles.