Figure 10. Ternary plot of normal sterane (5α, 14β, 17β [20S], m/z 218) distributions. Average Berea and Ohio Shale-reservoired (n = 22) and lower Paleozoic-reservoired (n = 29) oil from eastern (E.) Ohio shown for comparison. Data from GeoMark (2015). Data fields for E. Kentucky Ohio Shale and Sunbury Shale solvent extracts and Berea oils from Hackley et al. (2021, this issue). Huron and Marcellus data (dots) from this study.