Chapter 1: Lithostratigraphy: subdividing rock strata based on lithology

This document contains, for ease of download and use in the field, a flow chart of the steps in defining or using lithostratigraphical schemes, a schematic cross-section, a worked example illustrating hierarchical subdivisions of lithostratigraphical units, a worked example of the application of lithological, petrographic and geochemical features in a volcanic succession, and a table showing the requirements for providing a formal description of a lithostratigraphical unit.