Great Groups of the Regosolic Order
Two great groups of the Regosolic Order occur in Saskatchewan.
Humic Regosol Great Group:
These soils have an A horizon (including an Apk) equal to or greater than 10 cm thick and either no B horizon or one thinner than 5 cm.
Regosol Great Group:
These soils lack an A horizon or have one thinner than 10 cm, and have either a thin or no B horizon. They are most common on recent sediments such as sand dunes or floodplains.