Spatial variation in carbonate carbon isotopes during the Cambrian SPICE event across the eastern North China Platform

The Cambrian SPICE (Steptoean Positive Carbon Isotope Excursion) event is widely reported from the late Miaolingian to the early Furongian, but recent studies imply that the synchroneity and magnitude of the SPICE may be controversial. In order to test the spatial variation of the SPICE, here we present 367 carbonate δ13C data from six outcrop sections across a ~700 km transect along the eastern North China Platform. The SPICE is present in all...