Fig. 2: Results from paleoproductivity equations.
From: Upwelling-driven high organic production in the late Ediacaran
a Carbonate carbon isotopes representing the Shuram Excursion and its recovery along Member IV to positive values. Black line represents the recovery from the Shuram Excursion to positive values. Cross symbols are from ref. 27 and dots are from ref. 12. Colours refer to the different paleoenvironments. b Measured and corrected TOC values (TOCmc). c Primary productivity (PP) calculated with the ref. 37 equation. d Organic carbon flux to the sediment surface (OCFss). e Organic carbon accumulation rate (OCAR). Vertical dashed line in (a) shows the standard Peedee belemnite value. The salmon-coloured area in (c) represents the global range of long-term primary productivity in the modern ocean from ref. 53. Intrashelf sections: Xiangerwan, Zhimaping, and Qinglinkou. Upper slope section: Taoying. Lower slope section: Xiajiaomeng. Basin section: Fengtan.
