Light Hydrocarbon Geochemistry: Insight into Mississippian Crude Oil Sources from the Anadarko Basin, Oklahoma, USA

Figure 6

Mass chromatogram (m/z 191) showing terpane biomarker distribution in the saturate hydrocarbons comparing two end members of Mississippian sourced (Log-2) and Woodford sourced (Alf-1) crude oils. Note the enrichment of extended tricyclic terpanes up to C₄₁ in Mississippian-sourced oil and is depleted in Woodford-sourced oil.