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(A) Plot of pritsane/phytane vs the mean calculated vitrinite reflectance and (B) evolution of Pr/n-C17 versus Ph/n-C18 ratios (from Shanmugam58) for artificially matured KCF samples and naturally matured rocks from the Viking graben (VK1) and the Vaca Muerta fm. (VMF). (A) Comparison with pritsane/phytane of natural rocks from the Draupne (Isaksen and Ledje59) and the KCF (van Graas60). The highly oil-prone samples are M31, E38, and E40.
