Table 3 An analysis of the chemical and isotopic contents of gas seeps from seven locations throughout the research region.
Site | C1 | C2 | C3 | C6+ | N2 | CO2 | CO | Ar | δ13CCO2 | δ13CC1 | δDC1 | δ13CC2 | δ13CC3 | δ15N |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | 0.03 | 0.00 | 0.00 | 0.03 | 87.83 | 10.85 | 0.15 | 1.10 | – | – | – | – | – |  |
2 | 0.03 | 0.00 | 0.00 | 0.01 | 88.53 | 10.27 | 0.09 | 1.07 | − 25.5 | − 29.6 | – | − 28.9 | – | − 0.1 |
3 | 0.06 | 0.00 | 0.00 | 0.02 | 87.24 | 11.45 | 0.14 | 1.09 | – | – | – | – | – |  |
4 | 0.06 | 0.00 | 0.00 | 0.01 | 87.46 | 11.23 | 0.16 | 1.08 | − 25.4 | − 24.8 | - | -25.5 | − 27.2 | − 0.2 |
5 | 0.06 | 0.00 | 0.00 | 0.02 | 87.36 | 11.37 | 0.14 | 1.05 | – | – | – | – | – |  |
6 | 0.06 | 0.00 | 0.00 | 0.01 | 86.32 | 11.18 | 0.14 | 2.28 | − 25.4 | − 24.2 | – | − 25.3 | − 26.5 | − 0.4 |
7 | 0.41 | 0.06 | 0.05 | 0.14 | 87.25 | 11.06 | 0.00 | 1.00 | − 13.9 | − 24.1 | − 160 | – | – | − 0.5 |
