| [[:file:oiloil-and-oilsource-rock-correlations_fig8-45.png|Figure 1]] shows a comparison of nickel porphyrin distributions for a [[source rock]] extract (top) and an oil (bottom) from southern Sicily. The similar porphyrin distributions for the oil and the source rock extract suggest a plausible positive correlation, which in this case was supported by other geochemical data. | | [[:file:oiloil-and-oilsource-rock-correlations_fig8-45.png|Figure 1]] shows a comparison of nickel porphyrin distributions for a [[source rock]] extract (top) and an oil (bottom) from southern Sicily. The similar porphyrin distributions for the oil and the source rock extract suggest a plausible positive correlation, which in this case was supported by other geochemical data. |
− | [[file:oiloil-and-oilsource-rock-correlations_fig8-45.png|left|300px|thumb|{{figure number|1}}Comparison of nickel porphyrin distributions for a source rock extract (top) and an oil (bottom) from southern Sicily. From Ocampo et al.;<ref name=ch08r35>Ocampo, R., Riva, A., Trendel, J., M., Riolo, J., Callot, H., J., Albrecht, P., 1993, Petroporphyrins as biomarkers in [[oil-oil and oil-source rock correlation]]s: Energy & Fuels, vol. 7, p. 191–193, DOI: 10.1021/ef00038a005.</ref> reprinted by permission from American Chemical Society.]] | + | [[file:oiloil-and-oilsource-rock-correlations_fig8-45.png|left|300px|thumb|{{figure number|1}}Comparison of nickel porphyrin distributions for a source rock extract (top) and an oil (bottom) from southern Sicily. From Ocampo et al.;<ref name=ch08r35>Ocampo, R., A. Riva, J. M. Trendel, J. Riolo, H. J. Callot, and P. Albrecht, 1993, Petroporphyrins as biomarkers in [[oil-oil and oil-source rock correlation]]s: Energy & Fuels, vol. 7, p. 191–193, DOI: 10.1021/ef00038a005.</ref> reprinted by permission from American Chemical Society.]] |