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Table 2 Rock–Eval pyrolysis results of Carboniferous sections in the studied wells

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

Wells Depth Stratigraphic age TOC (%) S1 (mg HC/g) S2a (mg HC/g) S3 (mg CO2/g) HI (mg HC/g TOC) OI (mg CO2/g TOC) Tmax (°C) PI
Humilly-2 3039.8 Carboniferous 1.12 0.10 0.85 0.15 76 13 449 0.11
Humilly-2 3040.7 1.11 0.09 0.61 0.16 55 15 465 0.13
Humilly-2 3049 0.23 0.11 0.37 1.08 161 470 461 0.23
La Chandelière 1562.1 Carboniferous 0.11 0.04 0.53 0.38 467 337 545 0.07
Chaleyriat-1 1365.0 Carboniferous 0.88 0.03 0.45 1.21 51 137 514 0.06
Charmont-1 1798.0 Carboniferous 5.10 0.30 4.69 0.51 92 10 430 0.06
Charmont-1 1825.0 22.57 1.50 44.25 5.63 196 25 435 0.03
Charmont-1 1892.0 31.81 2.28 69.39 8.50 218 27 433 0.03
Charmont-1 1894.0 54.85 3.88 126.84 5.91 231 11 435 0.03
Charmont-1 1920.0 16.09 0.71 21.59 3.67 134 23 437 0.03
Charmont-1 2023.0 7.19 0.33 6.43 1.28 89 18 460 0.05
Charmont-1 2108.5 57.33 6.36 125.66 6.19 219 11 450 0.05
Chatillon-1D 1578.5 Carboniferous 8.24 0.52 7.78 0.64 94 8 444 0.06