Figure F4. Comparison of organic carbon and total nitrogen molar ratios (C/N) to nitrogen isotopes. Gray dotted circles = Hole U1319A, gray solid circles = Hole U1320A, black open circles = Holes U1322B, U1322C, and U1322D, black solid circles = Holes U1324B and U1324C. Upper and lower dashed lines = typical C/N values for terrestrially derived organic matter and marine organics.
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