[[file:evaluating-source-rocks_fig6-4.png|thumb|{{figure number|1}}. Copyright: Tissot and Weite, 1984; courtesy Springer-Verlag.]] | [[file:evaluating-source-rocks_fig6-4.png|thumb|{{figure number|1}}. Copyright: Tissot and Weite, 1984; courtesy Springer-Verlag.]] |