On the nature and chronostratigraphic position of the Rupelian and Chattian stratotypes in the southern North Sea basin

Abstract

different from the area in which historically the unit stratotype of the stage itself was defined. As a consequence, it is a common challenge to define boundaries in such a way that the full stratigraphic range of the historical stratotypes is respected as much as possible. It is essential to do so for continuity in stratigraphic communication.