A pedofeature forming segregated lumps of material with diverse composition (similar to cutans) as part of a soil groundmass. The non-planar shapes and more distinct outlines differentiate glaebules from cutans. Three common glaebules include mottles, nodules, and concretions.
– nodule : a glaebule that is irregular to nearly spherical, with a massive internal structure.
– concretion : a nodule-shaped glaebule showing an internal structure of concentric layers.
– mottle : poorly differentiated glaebules occurring as diffuse patches in the groundmass.