DIFFERENTIATION OF SOILS HAVING CYCLIC OR RECURRING HORIZONS

Abstract

Irregular tonguing horizons and those that occur sporadically in soil sections are not only difficult to describe consistently but also pose problems in correlating and classifying soil series. Average measurements of the frequency of occurrence and of the maximum and minimum depths of horizon variations can be used to describe and compare these variations in soils. Theoretical values of these parameters are combined and grouped into five variability classes that serve as guidelines with which actual field data can be compared.