The mineral material from which a soil forms is called parent material.

Physical disintegration is the first stage in the transformation of parent material into soil.

Below these layers is the parent material of glacial till.

They are common in lowland areas (below 1,000 feet) on permeable parent material.

The soils are formed on parent material of windblown sand.

I've come a long way from my family history, but I'm still the child of an abusive alcoholic and we don't make great parent material.

A catena can form on various underlying or parent materials and in different climates.

Within water transported parent material there are several important types.

Can you get a reading of the parent material?

The rock from which soil is formed is called parent material.