Figure 3
(A) Scatter plot of δ15N data and atomic C/N ratios from diverse depositional environments represented in various sections comprising Yangtze Sea deposits (refs 20, 21 and this study). The gray shade represents the range for those samples deposited during the OAEs29. (B) Comparisons of δ15N values recorded by marine sediments from the early-Cambrian Yangtze Sea and those from periods of widespread anoxia and OAEs (Data are sourced from refs 28 and 29). The gray box represents the range of values excluding outliers, with the line red/white in the box indicating mean values.
