Latest Ordovician (Katian-Hirnantian) carbon isotope chemostratigraphy of the Oslo-Asker region, NorwayCalner, Mikael; Calner, H.; Lehnert, Oliver; Bockelie, F.IGCP 591 : The Early to Middle Paleozoic Revolution : Closing Meeting, Ghent University, Belgium, 6-9 July 2016 : abstracts2016 / p. 30