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Table 4 Overview of biomarker ratios determined in this study

From: Origins of hydrocarbons in the Geneva Basin: insights from oil, gas and source rock organic geochemistry

Well Depth Stratigraphic age TOC (%) Pr/Ph Pr/nC17 Ph/nC18 TAR CPI C29
norHop/C30 Hop
C31 Hop
22S/(22R + 22S)
St C27 St C28 St C29
Humilly-2 2232 Toarcian 1.56 1.94 0.38 0.33 - - - - - - -
Humilly-2 2236 1.53 2.06 0.83 0.63 - - 0.34 0.58 34.69 23.79 41.52
Humilly-2 2238 4.32 1.51 0.76 0.75 0.04 1.38* 0.37 0.57 31.37 27.59 41.03
Humilly-2 2240 4.29 1.42 0.69 0.65 0.03 - 0.30 0.66 34.96 24.65 40.39
Humilly-2 3038.8 Carb 1.12 1.53 0.61 0.48 0.93 1.06 - - 35.66 33.25 31.09
Humilly-2 3040.7 1.11 0.88 0.63 0.66 2.5 1.05 - - 35.15 33.5 31.35
Chatillon-1D 1578.5 Carb 8.24 1.06 0.97 1.09 0.15 1.27 0.38 0.57 29.13 20.27 50.61
Charmont-1 1892 Carb 31.81 6.88 4.04 0.58 0.15 1.48* 0.87 0.58 21.46 16.35 62.19
Charmont-1 1894 54.85 6.75 2.08 0.32 0.28 1.74* 0.83 0.58 23.39 20.70 55.91
Charmont-1 2108.5 57.33 6.23 2.30 0.41 0.03 - 1.09 0.58 21.81 24.66 53.53
Chapeiry-1 3669 Toarcian 3.52 1.76 0.51 0.42 0.01 - - - - - -
Chapeiry-1 3720.9 1.39 1.26 1.59 1.18 0.24 1.48 0.74 0.60 42.22 28.29 29.49
Chapeiry-1 3722.7 3.29 0.87 0.60 0.62 0.44 1.13 0.73 0.58 48.94 19.43 31.63
Chapeiry-1 3728.8 4.15 1.23 0.44 0.41 0.13 1.11 0.35 0.61 36.66 25.15 38.19
Roulave bitumen Surface - - 0.62 3.05 40.45 0.15 - 0.31 0.57 36.04 24.38 39.58
Satigny bitumen Surface - - - - - - - 0.39 0.42 - - -
Satigny bitumen Surface - - - - - - - 0.31 0.5 - - -
  1. Pr pristine, Ph phytane, TAR Terrigenous Aquatic Ratio, CPI Carbon Preference Index, Hop hopane, Str sterane
  2. *CPI25-29 value