Explain what constitutes a loam soil. Explain how soil particle size and weight affect deposition. Humus is an essential component of soils. It enhances the soil's ability to retain water. The mineral portion of soil is usually much greater than the organic portion of soil.
Sand is a type of sediment derived from the weathering of rocks such as granite.
The feldspar in granite weathers to clay, and the quartz grains in granite are released as sand particles. Silt forms form the weathering of rocks. Clay is both a size term and a mineral term. Clay is produced when certain minerals, such as feldspar, are weathered in the presence of water. Soils contain particles of different sizes.