In India soils could be alluvial …

Alluvial soils are loamier and more clayey in nature. The colour of the alluvial soils varies from the light grey to ash grey. Black cotton soil (regur soil) is highly clayey. It is deep and impermeable and thus has high water retention capacity. These soils are black in colour. Res soil's texture varies from sand to clay and loam. The soil develops a reddish colour due to a wide diffusion of iron in crystalline and metamorphic rocks. Laterite soils are widely used as bricks because they are hard. They are Reddish brown in colour. Desert soils are sandy and gravelly. Desert soils may be gray-colored, brown, or even brick red. The texture of mountain soils can be loamy, clayey. Their colour is dark brown.