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C1–C5 alkane concentrations in sediments at site GB425, from which sediments were collected for this study in November 2010 (27°33.1887N, 93°32.4449W).
| Depth range (cm) | Methane (μM) | Ethane (μM) | Propane (μM) | n-butane (μM) | Pentane (μM) |
|---|---|---|---|---|---|
| 9–12 | 371.94 | 17.22 | 1.45 | 0.74 | 0.00 |
| 12–15 | 413.12 | 22.33 | 0.75 | 0.35 | 0.00 |
