Elusive Golden Spikes

When stratigraphers face the technical impossibility of specifying a GSSP in the field

Abstract

This publication explores challenges in defining Global Boundary Stratotype Sections and Points (GSSPs) and Standard Auxiliary Boundary Stratotypes (SABSs). It identifies issues with recent practices that undermine the principles of uniqueness and accessibility fundamental to these boundaries. Examples include the controversial use of cores to designate GSSPs for the Quaternary Period, the disregard for essential geological requirements, the failure to ensure field accessibility, and the lack of protection for key sites. These concerns, exemplified by the Cenomanian GSSP for the Cretaceous Period, which remains unprotected after more than 20 years, highlight the need for stricter adherence to guidelines and a reevaluation of current practices, advocating for the mandatory enforcement of certain rules. Other examples discussed specifically relate to the author's personal experience with Lower Cretaceous GSSPs and SABSs.