1. The classification of organisms or units into a graded succession or hierarchy.
2. In stratigraphy, the practice of defining stratigraphic units in terms of their rank within a hierarchy and the units of lower rank which they comprise. For example, the geologic systems are composed of series, which are themselves composed of stages. Compare TYPOLOGICAL METHOD.
"hierarchical method." A Dictionary of Earth Sciences. . Encyclopedia.com. (September 22, 2018). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/hierarchical-method
"hierarchical method." A Dictionary of Earth Sciences. . Retrieved September 22, 2018 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/hierarchical-method