Apedal soils

Structureless soils are subdivided into single grain and massive. Single-grain soil material has a loose, soft or very friable consistence, such loose sand.
Structureless single grain sand in Dubai desert.
Massive soil material normally has a stronger consistence and can crack by drying, forming bigger blocks or is layered. 
Massive wet clay (blue) in the bottom of soil pit in Estonia.
Massive blocks in Algeria.
Layered apedal soil in Altai mountain.