Upper Katian (Upper Ordovician) trans-Atlantic δ13C chemostratigraphy : the geochronological equivalence of the ELKHORN and PAROVEJA excursions and its implications
Since 2010 when the North American ELKHORN and Baltoscandic PAROVEJA isotope excursions were first described and named, their mutual age relations have remained uncertain, if not controversial. This was at least partly due to the incompleteness of the ELKHORN excursion in its reference section in western Ohio. The unexpected discovery of an apparently complete ELKHORN excursion in a drill core fro
