Research Article
Evidence of Multiple Sources of Soil Gas in the Tangshan Fault Zone, North China
Table 2
Geochemical compositions of gases sampled in shallow depth wells.
| No. | Site | CO2 (%) | Rn (kBq m-3) | He (ppm) | N2 (%) | O2 (%) | H2S (ppm) | Ar (%) | CO2 (%) | CH4 (ppm) | δ13 C (‰) | 3He/4He (R/Ra) | 4He/20Ne | CO2/3He | 6.2018 | 7.2018 | 8.2018 | 9.2018 | 10.2018 | 11.2018 | 6.2018 | 7.2018 | 8.2018 | 9.2018 | 10.2018 | 11.2018 | 9.2018 |
| 1 | DHT | 1.91 | 3.60 | 5.17 | 4.54 | 1.72 | 2.01 | 18.40 | 16.10 | 19.80 | 16.16 | 19.00 | 25.80 | 5.04 | 79.32 | 18.18 | 0 | 0.92 | 1.57 | 43 | -19.8 | 0.56 | 0.31 | 1.94E+09 | 2 | TJYC | 3.76 | 4.40 | 3.83 | 3.30 | 2.08 | 2.11 | 9.69 | 9.14 | 8.20 | 6.17 | 6.06 | 6.80 | 5.98 | 78.73 | 19.90 | 0 | 0.92 | 0.46 | 31 | -19.9 | 0.54 | 0.30 | 5.95E+08 | 3 | HBLG | 3.59 | 4.01 | 4.32 | 6.23 | 2.55 | 3.50 | 23.20 | 22.30 | 22.40 | 13.80 | 33.00 | 27.20 | 8.11 | 79.66 | 17.14 | 0 | 0.94 | 2.25 | 38 | -18.9 | 0.55 | 0.31 | 2.96E+09 | 4 | LHD | 0.62 | 0.59 | 0.74 | 0.85 | 0.89 | 0.89 | 6.72 | 6.47 | 6.7 | 5.88 | 4.59 | 7.15 | 7.33 | 93.65 | 4.55 | 56 | 1.09 | 0.70 | 87 | -19.8 | 0.56 | 0.29 | 3.68E+08 | 5 | HET | 0.14 | 0.12 | 0.09 | 0.13 | 0.15 | 0.18 | 8.53 | 9.31 | 5.34 | 5.93 | 4.37 | 7.86 | 7.12 | 97.81 | 0.45 | 631 | 1.15 | 0.32 | 113 | -19.7 | 0.55 | 0.28 | 8.13E+08 | 6 | SWZ | 2.04 | 1.62 | 2.50 | 2.82 | 3.66 | 3.48 | 8.71 | 8.08 | 9.33 | 10.20 | 11.80 | 12.90 | 6.17 | 80.96 | 15.61 | 0 | 0.94 | 2.49 | 38 | -19.7 | 0.49 | 0.30 | 3.18E+09 | 7 | WFS | 1.15 | 2.45 | 2.78 | 3.28 | 3.26 | 2.99 | 31.00 | 26.10 | 26.10 | 25.70 | 31.80 | 31.60 | 6.22 | 78.64 | 18.48 | 0 | 0.92 | 1.96 | 32 | -19.4 | 0.52 | 0.31 | 2.48E+09 |
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