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Figure F28. Solid-phase chemical parameters, Site U1418. A. Total organic carbon (TOC). B. Total nitrogen (TN). C. TOC/TN ratio (C/N). D. CaCO3. E. Scatter plot of TOC vs. TN. The potential contribution of inorganic N to the TN signal is estimated where the linear regression line intercepts the y-axis (e.g., Schubert and Calvert, 2001). Full details of Lithology column are shown in Figure F12 (see “Lithostratigraphy”).

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