TABLE 2.
Maturity and source sensitive biomarker ratios from the solvent extract (SE) and kerogen-bound (KB) phases of organic matter
| Location | Chuar group | Visingsö group | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Section | Nankoweap Butte | Sixtymile Canyon | Broken Nodule | Upg | Girabacken | Byd | ||||||||||||
| Sample ID | 36 | 50 | SW4 | SWE2 | v1O | v12 | v24 | v31 | v37 | v1 | v19 | v21 | ||||||
| Free (SE)/Bound (KB) | SE | KB | SE | KB | SE | KB | SE | KB | SE | SE | KB | SE | SE | SE | SE | SE | KB | SE | 
| Maturity sensitive | ||||||||||||||||||
| Tricyclics/C30αβH | 191 | 77 | 170 | 239 | 14 | 96 | 5.8 | 8.7 | 2.7 | 2.6 | 48 | 2.2 | 1.5 | 1.0 | 0.6 | 0.8 | 7.1 | 0.7 | 
| C27 Ts/Tm | 214 | 2.68 | 111 | 1.71 | 8.99 | 0.15 | 2.39 | 0.07 | 1.30 | 1.17 | 0.04 | 1.46 | 0.86 | 0.44 | 0.58 | 1.07 | 0.04 | 0.46 | 
| C29 Ts/apH | 7.10 | 0.66 | 7.13 | 0.49 | 1.86 | 0.07 | 1.09 | 0.09 | 0.80 | 0.76 | 0.02 | 1.08 | 0.56 | 0.34 | 0.31 | 0.63 | 0.03 | 0.24 | 
| 30-norH/C30αβH | 2.52 | 0.25 | 0.98 | 0.24 | 0.11 | 0.13 | 0.08 | 0.14 | 0.06 | 0.06 | 0.10 | 0.05 | 0.04 | 0.06 | 0.04 | 0.03 | 0.04 | 0.05 | 
| C30βαH/C30αβH | 0.00 | 0.25 | 0.00 | 0.08 | 0.05 | 0.09 | 0.05 | 0.06 | 0.12 | 0.13 | 0.34 | 0.10 | 0.12 | 0.14 | 0.10 | 0.09 | 0.32 | 0.12 | 
| C31αβH 22S/(S + R) | 0.51 | 0.47 | 0.54 | 0.50 | 0.56 | 0.57 | 0.57 | 0.59 | 0.57 | 0.56 | 0.54 | 0.56 | 0.58 | 0.57 | 0.57 | 0.58 | 0.60 | 0.58 | 
| Source sensitive | ||||||||||||||||||
| Tet/C23T | 0.30 | 0.35 | 0.24 | 0.24 | 0.42 | 0.14 | 0.43 | 0.20 | 0.27 | 0.29 | 0.32 | 0.24 | 0.24 | 0.70 | 0.84 | 0.42 | 0.48 | 1.38 | 
| C26T/C25T | 1.02 | 1.04 | 1.05 | 0.87 | 0.77 | 0.85 | 0.74 | 1.00 | 1.09 | 0.99 | 0.95 | 1.29 | 0.73 | 1.21 | 1.36 | 0.78 | 1.07 | 0.97 | 
| C29αβH/C30αβH | 4.05 | 1.58 | 1.43 | 1.82 | 0.55 | 2.60 | 0.54 | 1.89 | 0.49 | 0.43 | 4.43 | 0.41 | 0.41 | 0.55 | 0.64 | 0.38 | 3.00 | 0.65 | 
| G/C30αβH | 0.30 | 0.21 | 0.27 | 0.22 | 0.19 | 0.45 | 0.11 | 0.15 | 0.03 | 0.03 | n.d. | 0.04 | 0.07 | 0.01 | 0.02 | 0.03 | 0.02 | 0.01 | 
| 2αMeH/3pMeH | n.d. | n.d. | 1.13 | n.d. | 0.24 | 0.50 | 0.13 | 0.38 | 0.40 | 0.39 | 3.65 | 0.36 | 0.43 | 0.52 | 0.67 | 0.34 | 1.33 | 0.36 | 
| Sterane/Hopane ratios | ||||||||||||||||||
| Sterane/Hopane (1) | 0.09 | 0.56 | 0.19 | 1.01 | 0.38 | 1.26 | 0.37 | 0.36 | 0.23 | 0.36 | 0.37 | 0.15 | 0.18 | 0.07 | 0.04 | 0.16 | 0.16 | 0.03 | 
| S/H (2) | 0.05 | 0.38 | 0.11 | 0.69 | 0.27 | 0.81 | 0.28 | 0.28 | 0.20 | 0.32 | 0.30 | 0.13 | 0.17 | 0.06 | 0.04 | 0.15 | 0.15 | 0.03 | 
| S/H (3) | 0.04 | 0.27 | 0.10 | 0.41 | 0.22 | 0.46 | 0.23 | 0.23 | 0.16 | 0.24 | 0.23 | 0.12 | 0.14 | 0.06 | 0.04 | 0.13 | 0.13 | 0.03 | 
| Sterane distributions | ||||||||||||||||||
| %C26 | 40 | 32 | 38 | 32 | 23 | 29 | 17 | 17 | 12 | 8 | 15 | 9 | 4 | 6 | 3 | 4 | 7 | 2 | 
| %C27 | 49 | 68 | 53 | 68 | 70 | 63 | 76 | 76 | 80 | 86 | 80 | 80 | 89 | 82 | 86 | 91 | 88 | 98 | 
| %C28 (Erg) | 7 | n.d. | 5 | n.d. | 2 | 2 | 1 | 1 | 5 | 3 | 3 | 6 | 4 | 8 | 8 | 3 | 3 | n.d. | 
| %C28 (Cryo) | 4 | n.d. | 4 | n.d. | 4 | 4 | 4 | 4 | 4 | 3 | 2 | 5 | 3 | 4 | 3 | 2 | 2 | n.d. | 
| %C28 (total) | 11 | n.d. | 9 | n.d. | 6 | 6 | 5 | 5 | 9 | 6 | 5 | 11 | 7 | 12 | 11 | 5 | 5 | n.d. | 
| %C30 (unknown) | n.d. | n.d. | n.d. | n.d. | 1 | 2 | 1 | 2 | n.d. | n.d. | n.d. | n.d. | n.d. | n.d. | n.d. | n.d. | n.d. | n.d. | 
| Cryo/Chol | 0.08 | n.d. | 0.07 | n.d. | 0.06 | 0.07 | 0.05 | 0.05 | 0.04 | 0.03 | 0.02 | 0.06 | 0.03 | 0.05 | 0.04 | 0.02 | 0.02 | n.d. | 
| Dia/Reg C27 | 1.43 | <0.04 | 0.79 | <0.02 | 0.31 | <0.01 | 0.31 | <0.01 | 1.64 | 1.02 | <0.03 | 1.42 | 1.45 | 1.11 | 1.40 | 1.57 | <0.04 | 1.14 | 
Note: Upg: Uppgranna; Byd: Boeyrd; Tricyclics: C19–C26 tricyclic terpanes; C30αβH: 17α(H),21β(H)-hopane; C27Ts: 18α(H)-trisnorneohopane; C27Tm: 17α(H)-trisnorhopane; C29Ts: 18α−30-norneohopane; C29αβH: 17α(H),21β(H)-30-norhopane; 30-norH: 17α(H),21β(H)-30-norhomohopane; C30βαH: 17β(H),21α(H)-hopane (moretane); C31αβH: 17α(H),21β(H)-homohopane (S & R denote stereochemistry at the C-22 position); Tet: C24 tetracyclic terpane; C23T: C23 tricyclic terpane; C26T: C26 tricyclic terpane; C25T: C25 tricyclic terpane; G: gammacerane; 2αMeH: 2α-methylhopane; 3βMeH: 3β-methylhopane; S/H (1) as defined in this study: Σ(dia- + regular C26–C30 steranes [includes cryostanes and the unknown C30 series])/Σ(C27–C35 αβ hopanes); S/H (2) from Brocks et al. (2017): Σ(dia- + regular C27–C29 steranes [excludes C26 norcholestanes and cryostanes])/Σ(C27–C35 αβ hopanes); S/H (3) from Brocks et al. (2015): Σ(dia- + regular cholestanes and cryostanes [excludes C26 norcholestanes and ergostanes]/Σ(C27–C35 αβ hopanes); Cryo (cryostane): 26-methylcholestane; Chol: cholestane; Erg: ergostane; Dia/Reg C27: βα−20(S + R)-diacholestanes/[ααα- and αββ−20(S + R)-regular cholestanes]; n.d.: not detectable. All ratios are derived from MRM-GC-MS analyses.