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AAPG Bulletin
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AAPG Bulletin; Year: 2021; Issue: March DOI: 10.1306/08192019077
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Figure 5. Sofer-type plot of δ13C-isotopic composition (Sofer, 1984). Typical standard deviations of carbon isotopic composition are ±0.1‰. Average Berea- and Ohio Shale–reservoired (n = 23) and lower Paleozoic–reservoired (n = 34) oil from eastern (E.) Ohio shown for comparison using data from GeoMark (2015). Modified from Parris et al. (2019) with permission of Kentucky Geological Survey. VPDB = Vienna Peedee belemnite.
Figure 5. Sofer-type plot of δ13C-isotopic composition (Sofer, 1984). Typical standard deviations of carbon isotopic composition are ±0.1‰. Average Berea- and Ohio Shale–reservoired (n = 23) and lower Paleozoic–reservoired (n = 34) oil from eastern (E.) Ohio shown for comparison using data from GeoMark (2015). Modified from Parris et al. (2019) with permission of Kentucky Geological Survey. VPDB = Vienna Peedee belemnite.