Determine in brief about the Residual soils

Residual soils are generally very complex and varied. They are the products of in-situ disintegration of rocks and weathering. The grain size. Density and cementation are varied. Where the minerals are stable to weathering like quartz, the compressibility of soil is low. Where feldspars are present, the hydration of aluminium silicates may produce clay minerals for large depths in tropical climate. Black cotton soil is an example.