mixture of water and any combination of soil, silt, and clay

Mud is soil, silt, loam or clay, mixed with water. It is a type of soil that is also called "clay soil". Others include the sandy soil, or sand, and garden soil. Wet mud has a soft wet texture.

Travel can be difficult in mud
A pair of muddy boots

Young children sometimes play in puddles of mud. Mud is usually brown. Some animals including worms, frogs, snails, clams, and crayfish live in mud. Pigs and elephants use it to cool themselves in hot weather. Some people enjoy making mud pies out of mud.

Great river systems like the Amazon bring down to the delta immense amounts of mud which ends up in the sea outside the fan of the river mouth. Mudrock is what the mud may become millions of years later. Mudrocks make up fifty percent of the sedimentary rocks in the geologic record, and are easily the most widespread deposits on Earth.[1][2]

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  1. Boggs S. 2005. Principles of sedimentology and stratigraphy, 4th ed. Upper Saddle River N.J: Prentice Hall. ISBN 0-13-099696-3
  2. Potter P.E; Maynard J.B. & Depetris P.J. 2005. Mud and mudstones: introduction and overview. Berlin: Springer. ISBN 3-540-22157-3