Andosol

Andosols (from Japanese an meaning dark and do soil, a synonym of kuroboku) are soils found in volcanic areas formed in volcanic tephra. In some cases can andosols also be found outside active volcanic areas. Andosols cover an estimated 1–2% of earth's ice-free land surface. Andosols are closely related to other types of soils such as vitrosols, vitrandosols, vitrons and Pumice Soils that are used in different soil classification systems.