In which type of soil is a particle size class >90% fragments predominant?

Fragmental soils are characterized by a high proportion of soil particles that are classified as fragments, which typically includes stones, gravel, and larger rock particles. When the particle size class is greater than 90% fragments, it indicates that the soil primarily consists of these larger materials rather than finer particles like sand, silt, or clay. This class of soil is unique in that it lacks the finer texture typically associated with other soil types and is instead dominated by coarse fragments. The high percentage of fragments influences various soil properties, such as drainage, stability, and root penetration, making fragmental soils distinct from clayey soils, sand-dominated soils, and loamy soils, which contain significant amounts of finer particles. Therefore, the classification of fragmental soils is essential for understanding their behavior and management in various agricultural or environmental contexts.