4. Pedofeatures

The following subtypes can be distinguished in accordance with their fabric:

Typic. They have an undifferentiated fabric.

Concentric. They have concentric fabric.

Nucleic. They have a distinctive core.

Geodic. They have an interior void.

Septaric. They have a radiating crack pattern.

Pseudomorphic. Their internal fabric is pseudomorphic with another substance.

Halo. They have a strongly impregnative core and a weaker impregnative cortex.

They are also defined by their degree of impregnation (pure, strong, moderate and weak impregnation) and by the sharpness of their boundary (net and diffuse).