[[:file:oiloil-and-oilsource-rock-correlations_fig8-23.png|Figure 1]] shows two distinct distributions of diasteranes. The top oil has very few diasteranes, indicating a possible lack of clay in the source rock. The bottom oil, in contrast, has similar amounts of diasteranes and regular steranes and probably comes from a clastic source. | [[:file:oiloil-and-oilsource-rock-correlations_fig8-23.png|Figure 1]] shows two distinct distributions of diasteranes. The top oil has very few diasteranes, indicating a possible lack of clay in the source rock. The bottom oil, in contrast, has similar amounts of diasteranes and regular steranes and probably comes from a clastic source. |