EntityQ431543· pop 15· linked from 260 articlesparent materialSign in to saveunderlying geological material in which soil horizons formConnectionsmineralEntitypodzolEntityOxisolEntityGelisolEntityriverEntitylakeEntityInternational Standard Book NumberEntitysandEntityglacierEntityclayEntitymudEntitypeatEntityduneEntitygravelEntityfloodplainEntityweatheringEntityalluviumEntityice sheetEntitySphagnumEntityloessEntityCategoriesPedology