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Fig. 3 | Progress in Earth and Planetary Science

Fig. 3

From: High-resolution Quaternary record of marine organic carbon content in the hemipelagic sediments of the Japan Sea from bromine counts measured by XRF core scanner

Fig. 3

TOC versus TOC/TN ratio of samples from IODP Site U1424 measured in this study. The TOC/TN ratio decreases as the TOC decreases, suggesting a probable effect of inorganic nitrogen, especially when the TOC is low. Solid and dashed lines are theoretical lines for the TOC/TN ratio versus the TOC when the TOC/TON ratio is assumed as 9 and 16 and inorganic nitrogen content is assumed as 0.035% (see text for details)

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