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 delta C-13. 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. (C) 2011 Elsevier B.V. All rights reserved