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Figure F51. Proportion of C29 Δ4 and Δ5 sterenes as a proportion of C27 to C29 Δ4 and Δ5 sterene homologs set against backdrop of lithology obtained from cuttings, Site C0020. Blue = mudstone, orange = sandstone, white unfilled region = proportion of siltstone. Doublets of Δ4 and Δ5 sterenes are denoted by carbon number. Samples show varying proportions of each carbon number homolog downhole–generally C29 isomer lowest in mudstone rich intervals.

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