High resolution organic carbon isotope stratigraphy from a slope to basinal setting on the Yangtze Platform, South China: Implications for the Ediacaran–Cambrian transition

Organic carbon isotope data from two slope to basinal sections across the Ediacaran–Cambrian transition on the Yangtze Platform, South China record secular variations in δ13C. Data supplement highly comparable organic carbon isotope profiles from time equivalent shallow shelf and slope settings. No environmentally determined carbon isotope gradient across the Yangtze Platform is discernible, suggesting that a transgressive anoxic event provided an isotopically homogenous carbon source for primary productivity that originated from the deeper part of an anoxic and/or sulfidic basin.

► It is the first time to show detail organic carbon isotope data from two slope to basinal sections across the Ediacaran–Cambrian transition on the Yangtze Platform, South China.
► Data supplement highly comparable organic carbon isotope profiles from time equivalent shallow shelf and slope settings.
► The data suggests that a transgressive anoxic event provided an isotopically homogenous carbon source for primary productivity that originated from the deeper part of an anoxic and/or sulfidic basin.