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thumb|upright=1.35|A pair of muddy Wellington boot|Wellington boots thumb|Gamo mud volcano in Tokamachi, Japan Mud (, or Middle Dutch) is loam, silt or clay mixed with water. Mud is usually formed after rainfall or near water sources. Ancient mud deposits hardened over geological time to form sedimentary rock such as shale or mudstone (generally called lutites). When geological deposits of mud are formed in estuaries, the resultant layers are termed bay muds. Mud has also been used for centuries as a construction resource for mostly houses and also used as a binder. An Old English word for it
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Mud is a mixture of loam, silt, or clay combined with water, typically formed after rainfall or near water sources. Over geological time, ancient mud deposits have hardened into sedimentary rocks like shale and mudstone, and humans have used mud for centuries as a building material and binder for construction.
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