Ceremony for Golden Spike of the Global Stratotype Section and Point of the base of the Chattian Stage May 13, 2017 After years of work, it is with great pleasure that we finally announce that the International Commission of Stratigraphy (ICS) approved, ratified in September 2016 by the International Union of Geological Sciences (IUGS) at […]
Category Archives: stratotype
GSSP for Rupelian Stage (Oligocene) Description: The GSSP for the base of the Rupelian Stage (Eocene/Oligocene boundary) is defined in the Massignano section about 10 km southeast of Ancona, Italy. The GSSP is at the base of a 0.5 m thick greenish-grey marl bed. At this level, both the planktonic foraminifera Hantkenina and Cribrohantkenina, Eocene […]
Description: The GSSP for the base of the Lutetian Stage (early/middle Eocene boundary) is defined at 167.85 metres in the Gorrondatxe sea-cliff section (NW of Bilbao city, Basque Country, northern Spain; 43º22’46.47″ N, 3º00’51.61″ W). This dark marly level coincides with the lowest occurrence of the calcareous nannofossil Blackites inflatus (CP12a/b boundary), is in the […]