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AAPG Bulletin
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AAPG Bulletin; Year: 2020; Issue: June DOI: 10.1306/0122201618217407
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Figure 7. Ternary diagram showing the distribution of C27ααα 20R, C28ααα 20R, and C29ααα 20R regular steranes in the Niger Delta oil samples. Depositional environment interpretational overlay for Integrated Geochemical Interpretation 3.5 software (modified after Huang and Meinschein, 1979). Five Niger Delta oil samples biodegraded to level 6 or higher, as described in Peters and Moldowan (1991), were excluded from the plot.
Figure 7. Ternary diagram showing the distribution of C27ααα 20R, C28ααα 20R, and C29ααα 20R regular steranes in the Niger Delta oil samples. Depositional environment interpretational overlay for Integrated Geochemical Interpretation 3.5 software (modified after Huang and Meinschein, 1979). Five Niger Delta oil samples biodegraded to level 6 or higher, as described in Peters and Moldowan (1991), were excluded from the plot.